Belousov-Zhabotinskii Reaction

Belousov-Zhabotinskii Reaction

DCS #

Area

Topic

Concept

Chemical oscillator, ThermodynamicsKeywords

InactiveStatus

100 CabinetLocation

��Rating

This reaction serves as a classicalexample of non-equilibriumthermodynamics, resulting in theestablishment of a nonlinearchemical oscillator. Solution willoscillate from red to blue for up toseveral hours. A petri dish can beused to visualize concentric circles.

BriefDescription

magnetic stirrer, magnetic stirring bar, stirring bar remover(not provided) petri dish, four 100 mL beakers, one 50 mLbeaker, measuring cylinder (can be found in Demo room)

EquipmentNeeded

WARNING: Proper chemicalprecautions need to be taken.Chemicals used in this reaction aretoxic, skin irritants, eye andrespiratory irritant. Reaction shouldbe performed in a well ventilatedarea. SAFETY GOGGLES ANDPROTECTIVE GLOVES MUST BEWORN!

Details

360Demo #

Suggestions forImprovement

Related Demos

References

If you wish to perform this reaction you MUST thoroughlyunderstand the procedures. Online research is suggested.

Other Uses

DateChecked

NoChecked

Transformer Demo

DCS #

Area

Topic

Concept

Transformer, Light, bulb, switchKeywords

In StorageStatus

StorageLocation

�� old buteffective

Rating

Two switches with lightbulbsconneted in series with atransformer

BriefDescription

Wall outletEquipmentNeeded

Not much is known about this but itis inactive and should be tested bythe demo room before use

Details

332Demo #


Related Demos

References

Other Uses

2/14/2020DateChecked

NoChecked

Manual Rotator

DCS #

1 MechanicsArea

Topic

Concept

rotator, wheel, rotate, spin,Keywords

ActiveStatus

30Location


Rating

BriefDescription

EquipmentNeeded

Details

157Demo #

Missing belt to turn between wheels. Unclear what this is orwas used for: please expand/explain if you have used thisfor a specific demo.


Related Demos

References

Other Uses


YesChecked

Bowling Ball Ramp

DCS #

1 MechanicsArea

Topic

Concept

bowling ball rampKeywords

ActiveStatus

16Location

��Rating

Ramp for bowling ballsBriefDescription

bowling ballEquipmentNeeded

Details

114Demo #


Related Demos

References

Other Uses


YesChecked

Fine Tube

DCS #

1 MechanicsArea

Topic

Concept

Keywords

In StorageStatus

StorageLocation

��Rating

BriefDescription

EquipmentNeeded

Details

317Demo #


Related Demos

References

Other Uses


NoChecked

Blower

DCS #

1 MechanicsArea

Topic

Concept

Blower, air, track, fan, source.Keywords

ActiveStatus

14Location

��Rating

Air blower far various. Do not usewith air tracks until repaired!

BriefDescription

EquipmentNeeded

Details

087Demo #

Foam at inlet has deteriorated and is sucked into the fanwhen operating.


062, 068, 069,070, 071, 072,

Related Demos

References

Other Uses


YesChecked

PASCO TRACK PENDULUM CAR

DCS #

1 MechanicsArea

Topic

Concept

Keywords

ActiveStatus

35Location

�� good butlacks zest

Rating

Cart swings back and forth oppositethe motion of the attachedpendulum.

BriefDescription

EquipmentNeeded

Details

242Demo #


060, 061Related Demos

References

Other Uses

9/6/2019DateChecked

YesChecked

Probability Board

1A20.10DCS #

1 MechanicsArea

1A MeasurementTopic

1A20 Error andAccuracy

Concept

probability, gaussian, thermodynamics, statistiacs,distribution, bell curve

Keywords

ActiveStatus

14Location


Rating

As the metal balls fall from the top,the will collect in a series of columnsat the bottom in a bell curvedistribution.

BriefDescription

noneEquipmentNeeded

Tip board upside down to collect themetal balls in the track above. Ballscan be held in top track by pushingin the pin located on the back of theboard. Let balls fall and see thedistribution.

Details

096Demo #


Related Demos

References

Other Uses


YesChecked

XYZ Coordinate System

DCS #

1 MechanicsArea

1A MeasurementTopic

1A30 CoordinateSystems

Concept

Keywords

ActiveStatus

9Location

� basicmeasurement

Rating

BriefDescription

EquipmentNeeded

Details

079Demo #


Related Demos

References

Other Uses


YesChecked

SCALES

DCS #

1 MechanicsArea

1A MeasurementTopic

variousConcept

scale, hanging, force, mass, weight, suspend, spring,Keywords

ActiveStatus

55-57Location


Rating

These scales demonstrate forcesand weights measurements. LargeFace Spring Scale can be seen byyour entire class. You can provideforce measurements with either thepull -type spring scales or the dial-type scales.

BriefDescription

Different types of scales.EquipmentNeeded

Details

9002Demo #


Related Demos

References

Found on shelves 56 and 57Other Uses

9/4/2019DateChecked

YesChecked

PASCO ROLLING TRACK CARS

1C10.25DCS #

1 MechanicsArea

1C Motion in OneDimension

Topic

1C10 VelocityConcept

Pasco, air track, glider, cart, velocity, motion, inertia,momentum, collision, conservation, energy, dynamic,friction, Newton, first law, second law, third law, fan cart,

Keywords

ActiveStatus

35Location


Rating

1. Great for any size class room2. Very close to perfect elastic andinelastic collision conditions3. Set up should be done beforehand to get familiarized with theequipment4. Could easily be used to covermultiple days of 1 and 2 dimensionalmotions

BriefDescription

In Box:1. Pasco Dynamics Carts, Fan Accessory, and VariousAccessoriesAdditional Equipment:2. Pasco Dynamics Track

EquipmentNeeded

These carts can be used todemonstrate several motionconcepts. Three (3) of the cartshave a magnetic bumper on oneside and a spring loaded piston onthe other side. The fourth cart hasmagnetic bumpers on both ends.The magnets make for very effectiveinelastic collisions while the trackitself is relatively frictionless. Thetrack can be used with the DemoComputer to monitor position versustime graphs during class on the LCDprojectors. Instruction Sheets forthe Collision Cart and FanAccessory are included in the box.Refer to the Instruction Manual andExperiment Guide for the PASCOPASCar with Mass, located on thePhysics Demo Room Computer.IMPORTANT: BE SURE TO GRABTHE TRACK!!! (NOT IN PICTURE)

Also need batteries for fan.

Details

060Demo #


058, 059,061 ,242

Related Demos

References

Other Uses


YesChecked

TIMED GRAVITY BALLS

1C20.20DCS #

1 MechanicsArea


Topic

1C20 UniformAcceleration

Concept

timed gravity balls, equal time, distance, drop, interval,acceleration, uniform,

Keywords

ActiveStatus

17Location


Rating

1. Drop two long strings with balls -one with equal distance intervals(green) and the other with equaltime intervals (yellow).2. Students listen to the sound of theballs hitting the floor and comparethe time intervals of the “hits”between the two sets of balls.

BriefDescription

1. String with green wooden balls, where the balls areplaced with equal distance between balls (in the box)2. String with yellow balls, where there are differentdistances between balls (in the box)3. Ladder

EquipmentNeeded

You can drop balls on wooden boardto amplify the sound.

Drawback: length of equal time islong so a ladder is needed.

Details

124Demo #


Related Demos

Sutton (M-84); University of Maryland Physics Lecture-Demonstration Facility (C2-06); PIRA 500.

References

Other Uses

9/4/2019DateChecked

YesChecked

Inclined Planes

DCS #

1 MechanicsArea


Topic

1C20 UniformAcceleration

Concept

Plane, board, roll, incline, slopeKeywords

ActiveStatus

FloorLocation


Rating

Boards for rolling objectsBriefDescription

Box or clamp stand to elevate one endEquipmentNeeded

Located near shelf 42 against southwall

Details

041,042Demo #

Edge barriers to prevent items from rolling off side.Relocate to shelf 16 with bowling ball ramp?


057, 054, 045Related Demos

References

Other Uses


YesChecked

PASCO Track

DCS #

1 MechanicsArea

1D Motion in TwoDimensions

Topic

Concept

track, rolling, cars, carts, collision, ballistic.Keywords

ActiveStatus

26Location

��Rating

Track for PASCO demosBriefDescription

DEMO 058, 059 and or 060EquipmentNeeded

Details

061Demo #


058, 059, 060,242

Related Demos

References

Other Uses


YesChecked

HIGH ROAD AND LOW ROAD

1D15.20DCS #

1 MechanicsArea


Topic

1D15 Velocity,Position, andAcceleration

Concept

high, low, road, motion, two dimensions, 2D, velocity,position, acceleration, conservation, energy, ramp, ball,

Keywords

ActiveStatus

31Location

�� goodand engaging

Rating

Race two metal balls (located onside) down each tracksimultaneously and see which ballwins. Remember theBrachistochrone?

BriefDescription

Two tracks mounted in to a wooden frame - one road withincline goes straight down, the other one is with the sameincline but including a valley; Two Metal Balls.

EquipmentNeeded

The conversion of potential to kineticenergy determines the speed of theballs on each of the tracks.

Details

161Demo #


Related Demos

American Journal of Physics (AJP 51(1),132); University ofMaryland Physics Lecture-Demonstration Facility (C2-11).

References

Other Uses


YesChecked

CENTER OF MASS WAND

1D40.11DCS #

1 MechanicsArea


Topic

1D40 Motion of theCenter of Mass

Concept

center of gravity, juggling, center of mass, motion, paraboliccurve, two dimensions, 2D

Keywords

ActiveStatus

29Location


Rating

The wand has one ball on eitherend. The pink ball marks the centerof mass. You can throw the wand inthe air and watch the peripheralballs rotate around the pink ball. Youcan also rotate the wand in yourhand about the pink ball.

BriefDescription

EquipmentNeeded

Details

144Demo #


Related Demos

Meiners (14-2.3).References

Other Uses

9/6/2019DateChecked

YesChecked

CENTRIPETAL FORCE APPARATUS

1D50.20DCS #

1 MechanicsArea


Topic

1D50 CentralForces

Concept

centripetal, force, centrifugal, central, rotation, circular,motion, speed, velocity, length, speed,

Keywords

ActiveStatus

17Location


Rating

Hold the metal cylinder and rotatethe rubber stopper over your head.The speed of rotation depends onthe string length. So, you can adjustthe length during the ball rotation bymoving weight up and down.

BriefDescription

Mass; string, cylinder, and loop apparatus (in box)EquipmentNeeded

This can work with varying weights,but the stopper is 100g, so weightsin the 200-500g range work well.

Details

129Demo #


Related Demos

American Journal of Physics (AJP 29(3), 212), Freier &Anderson (Mm-2), Sutton (M-138).

References

Other Uses


YesChecked

WHEEL OF EYES

1D50.50DCS #

1 MechanicsArea


Topic

1D50 CentralForces

Concept

central, force, wheel, eyes, centripetal, centrifugal, circular,motion, density, fluids, rotation,

Keywords

ActiveStatus

8Location

�� old difficultto observe

Rating

Eyes look towards the center of thedisk as it rotates

BriefDescription

EquipmentNeeded

-Not very visible-Explanation is simple-On an individual basis itdemonstrates rotational dynamicswell

The buoyancy balls are eye’s thatalways float up. When the disk isspun, all the eyes look towards thecenter as the water pushes it’s waytoward the outside. The further fromthe center the eyes are, the greaterthe deflection.

Details

356Demo #


Related Demos

References

Other Uses


YesChecked

SPINNING GLASS OF WATER

1D50.45DCS #

1 MechanicsArea


Topic

1D50 CentralForces

Concept

spinning, water, centripetal, centrifugal, force, circular,motion, central, deformation, momentum, waiter tray

Keywords

ActiveStatus

17Location

�� good butdifficult

Rating

This is the classic cup on a platebeing swung upside down. good forintro classes to describe thedifferences between centripetal andcentrifugal forces.

BriefDescription

Plate and cup (in box); food coloring (optional); water(optional)

EquipmentNeeded

Adding food coloring to the watercan improve visibility for largerclasses (though it can be a biggerproblem if it spills).

Will probably spill water

Details

126Demo #


125Related Demos

References

Other Uses

9/6/2019DateChecked

YesChecked

Large Waiter’s Tray

1D50.45DCS #

1 MechanicsArea


Topic

1D50 CentralForces

Concept

centripetal force, inertia, mechanics, Newton’s first law,centripetal

Keywords

ActiveStatus

29Location


Rating

A good way to demonstratecentripetal force. Fill glasses withwater, place on plate suspended bythe ropes. Slowly begin to swingtray holding the glasses. Swinghigher and higher then make a fullcircle. The glasses will continue tohold water as they are upsidedown.

BriefDescription

Tray and glasses (included);water;food coloring (optional)

EquipmentNeeded

With a little practice, thedemonstrator can reliably swing theglass in dizzying circles and evenoverhead. The simple pendulumshows that the net force acting onthe glass is always directed nearlyradially, pinning the glass to the tray

Using food coloring can improvevisibility (but is also moreproblematic if it spills).

Details

125Demo #


126Related Demos

References

Other Uses


YesChecked

CENTRIPETAL FORCE SET

1D52.10DCS #

1 MechanicsArea


Topic

1D52 Deformationby Central Forces

Concept

centripetal, force, centrifugal, central, flat, earth, centrifuge,hoops, spinning, polar, deformation,

Keywords

MissingStatus

18Location


Rating

Attach to a rotator these two springmetal hoops and they flatten at thetop and bottom, providedemonstration of polar flattening.Attach to a rotator Watt’s Governor.As the rotator spins faster andfaster, the weights attached to thearms spread outward and rise.

BriefDescription

Centrifugal Hoops - bottom of hoops are secured at rightangles on an axis, while their tops can slide freely; Watt’sGovernor; Variable Speed Rotator.

EquipmentNeeded

The Watt’s Governor modeled afteran actual component of steam andother engines. It demonstrates howthe speed of a rotating equipmentcan be controlled and its force usedto set off a controlling switch orrheostat (when this apparatusbottom collar change a position itcan be use to trigger a controldevice).

Details

9004Demo #


Related Demos

Freier & Anderson (Mm-4b), Central Scientific Company(CENCO’99, 86).

References

Other Uses


NoChecked

CENTRIPETAL FORCE FLOAT #2

1D52.30DCS #

1 MechanicsArea


Topic

1D52 Deformationby Central Forces

Concept

centripetal, force, centrifugal, central, centrifuge, spinning,deformation, circular motion, density, float, accelerometer,rotation,

Keywords

ActiveStatus

8Location


Rating

Spin this apparatus and fishingbobbers, normally remain vertical,will behave differently.

BriefDescription

Rotating platform with two jars of water - one jar has a lightfishing bobber, suspended from the bottom; the other one -with a heavy bobber, suspended from the top.

EquipmentNeeded

Make sure you have enough spaceto rotate this apparatus.HANDLE WITH CARE!

Details

341Demo #


Related Demos

University of Maryland Physics Lecture-DemonstrationFacility (D1-43); The Physics Teacher (TPT2(4),176);Meiners (8-3.2).

References

Other Uses

9/6/2019DateChecked

YesChecked

CIRCULAR MOTION RING BOARD

1D55.10DCS #

1 MechanicsArea


Topic

1D55 CentrifugalEscape

Concept

centripetal, force, centrifugal, central, centrifuge, spinning,circular motion, tangential, velocity,

Keywords

ActiveStatus

18Location


Rating

A ball is rolled around the inside of alarge open metal hoop. Show thestudents where the ball will go, whenit reaches the opening.

BriefDescription

Clear board with metal ring and level on it, metal ball.EquipmentNeeded

You can adjust screws so clearboard is leveled.Good for use with overheadprojector and camera.

Details

141Demo #


Related Demos

University of Minnesota Handbook (1A12.01).References

Other Uses

9/6/2019DateChecked

YesChecked

SIMULTANEOUS BALL LAUNCH AND DROP #1

1D60.20DCS #

1 MechanicsArea


Topic

1D60 ProjectileMotion

Concept

projectile, motion, two dimensions, 2D, parabolic, trajectory,monkey and hunter, Newton, second, law, simultaneous,fall, drop, gravity, range,

Keywords

ActiveStatus

18Location

�� good butlaunches a longway

Rating

Place two metal balls on thislaunching apparatus. The systemsimultaneously release two balls -dropping one and launching theother horizontally. They strike thefloor at the same time.

BriefDescription

Launching apparatus; Lab stand with clamps; Two metalballs.

EquipmentNeeded

use wooden stand provided. Metalstand DNE

Details

136Demo #


158Related Demos

Central Scientific Company (CENCO’99,80), Freier &Anderson (Mb-14), Sutton (M-91), Hilton (M-13b).

References

Other Uses

9/6/2019DateChecked

YesChecked

SIMULTANEOUS BALL LAUNCH AND DROP #2

1D60.20DCS #

1 MechanicsArea


Topic


Concept

projectile, motion, two dimensions, 2D, parabolic, trajectory,monkey and hunter, Newton, second, law, simultaneous,fall, drop, gravity, range,

Keywords

ActiveStatus

28Location


Rating

A spring loaded device drops oneball and projects the otherhorizontally. Two yellow woodenballs simultaneously dropped andprojected horizontally hit the floortogether. The size of the apparatuslets see the demonstration well evenfrom the distance.

BriefDescription

EquipmentNeeded

Be careful, horizontally flying ballcan hurt.

Details

158Demo #


136Related Demos

Freier & Anderson (Mb-14); Sutton (M-91); Hilton (M-13b);Central Scientific Company (CENCO’99,80).

References

Other Uses

9/6/2019DateChecked

YesChecked

HOWITZER AND TUNNEL

1D60.10DCS #

1 MechanicsArea


Topic


Concept

howitzer and tunnel, ballistic, car, projectile, motion, twodimensions, 2D,

Keywords

ActiveStatus

20Location

�� good butinconsistent

Rating

The car is set horizontally in motion.the pin is pulled, and the ball flies upand lands back in the cylinder, eventhough the car has continued itshorizontal path. So, two objects canhave the same horizontalcomponent of motion that isundisturbed by one object’s verticalcomponent.

BriefDescription

Car with a central cylinder and a spring-loaded launcher thatwill shoot an included ball vertically in the air when a lockingpin is pulled; Metal ball.

EquipmentNeeded

There are two positions that the pincan be locked into to vary thevertical launch.

BALLISTIC ACCESSORY CARTWORKS BETTER (Demo 059)

Details

135Demo #

Does not work consistently with included marbleSuggestions forImprovement

059Related Demos

Central Scientific Company (CENCO’99,79); Sutton (M-99);Hilton (M-6b).

References

Other Uses


YesChecked

SHORT RANGE PROJECTILE LAUNCHER

1D60.40DCS #

1 MechanicsArea


Topic


Concept

ball, launcher, projectile, motion, two dimensions, 2D,parabolic, trajectory, short range,

Keywords

ActiveStatus

18Location


Rating

Set the spring gun to the desiredangle, put the rubber balls intolauncher and pull the yellow string.Watch the balls motion.

BriefDescription

Projectile launcher with adjustable angle of the inclinedtube-gun; Rubber balls; distance string.

EquipmentNeeded

A string is included to approximatelyshow the distance traveled byvarious launch angles. Note that 3different launch powers are possible.The black balls in the box work bestbecause they do not bounce oncethey land.

Details

156Demo #


Related Demos

References

Other Uses

9/9/2019DateChecked

YesChecked

MONKEY AND HUNTER #2

1D60.30DCS #

1 MechanicsArea


Topic


Concept

projectile motion, two dimensions (2D), parabolic trajectory,monkey and hunter, Newton’s Second Law, simultaneous,fall, drop, gravity, range, collision

Keywords

Active see detailsStatus

28Location


Rating

1. Visible to a large class.2. Clearly shows that all objects fallvertically at the same rate,regardless of size or hortizontalspeed.3. Set-up should be done beforeclass to familiarize yourself with theequipment and to practice the Demoyourself.

BriefDescription

In the Box:1. Po (Tellytubby)2. Paintball Gun w/ CO2 canister3. Remote Control Magnet Assembly4. Pellets5. Instructions6. Photos of set-upAdditional Equipment:1. Holder Clamps (2)

EquipmentNeeded

1. It is recommended that theRemote Control MagnetAssembly be attached to theright side of the Auditorium’sMain Screen with HolderClamps (see Instructions &Photos).2. The paintball gun trigger ismodified to set off the remotemagnet from which thetellytubby hangs. Thisinsures the tellytubby beginsfalling at the exact moment(same time as) the pellet isfired (be sure to pull thetrigger forcefully).3. There is also a laser sighton the paintball gun to showthe class where the gun isbeing aimed.4. Detailed Instructions &

Details

149Demo #


Related Demos

References

Detailed Instructions and Photos included in the box.Other Uses

9/9/2019DateChecked

YesChecked

PASCO Ballistic Cart Accessory

1D60.10DCS #

1 MechanicsArea


Topic


Concept

projectile motion, parabolic, velocity, constant acceleration,ballistic

Keywords

ActiveStatus

35Location


Rating

Mounted on a dynamics cart movingat constant velocity, the Ballistic CartAccessory launches a ball vertically,continues down the track, and thencatches the ball as it falls -- everytime. It offers an excitingintroductory demonstration toprojectile motion.

BriefDescription

Ballistic Cart Accessory, Dynamics Cart and track

One 9V battery

EquipmentNeeded

Instruction manual in box

THIS DEMO IS BETTER THANHOWITZER & TUNNEL.

Take some time before using tomake sure the aim is set correctly sothe ball drops consistently.

Details

059Demo #



References

Other Uses


YesChecked

PASCO Drop Rod

DCS #

1 MechanicsArea


Topic


Concept

projectile, ballistic, fall, velocityKeywords

ActiveStatus

30Location


Rating

Drop rod accessory for PASCOtrack 059

BriefDescription

Ballistic cartPasco track

EquipmentNeeded

Details

058Demo #



References

Other Uses


YesChecked

Foucault Pendulum

DCS #

1 MechanicsArea

1E Relative MotionTopic

1E10 MovingReference Frames

Concept

Foucault Pendulum, reference framesKeywords

ActiveStatus

35Location

��Rating

This is a simple foucault pendulumto give insight to the the differentreference frames between anobserver off planet earth (demo 414)and one on earth (pendulum inPhysics foyer)

BriefDescription

EquipmentNeeded

Details

414Demo #


Related Demos

References

Other Uses


YesChecked

BIG BLACK METAL DOORSTOP AS A HANDSHIELD

1F10.DCS #

1 MechanicsArea

1F Newton's FirstLaw

Topic

1F10 MeasuringInertia

Concept

inertiaKeywords

ActiveStatus

Shelf 57Location


Rating

One side of the doorstop is loweredonto your fingers (gently!) and thenyou hit the hammer on top of thedoorstop. An excellentdemonstration of inertia, and a sureway to get students’ attention.

BriefDescription

1.) The Big Black Metal Doorstop (on the floor near the dryerase board).

2.) A hammer (available on the pegboard with the tools)

EquipmentNeeded

Be careful: the doorstop is veryheavy and would easily damagefingers if dropped on them.

The large mass of the doorstep(high inertia) prevents the force ofthe hammer blows from damagingyour hand.

You may want to practice oncebefore class so you know yourtolerance, and how hard you want tohit (you can still feel the hammerblows slightly)

The drama can be heightened bynot explaining the physics first.

Details

358Demo #


Related Demos

Thanks go to Professor Leisure for suggesting this demo.References

DoorstopOther Uses

9/9/2019DateChecked

YesChecked

NEWTON’S FIRST LAW GEL

1F20.40DCS #

1 MechanicsArea


Topic

1F20 Inertia ofRest

Concept

Newton, first, law, gel, inertia, rest, fluid, dynamics of fluids(2C), viscosity,

Keywords

ActiveStatus

17Location


Rating

Very easy demonstration ofNewton's First Law.

Not especially visible to a largeclass.

Takes only a minute or two oflecture time.

BriefDescription

Bottle of Green GelEquipmentNeeded

Demonstrates how to really get theketchup out of the bottle. Turn itover and whack the bottom (which isnow on top). This is the usual waypeople try to get the ketchup out, butby the 1st law, all it does is push thebottle into the ketchup. Now try it bywhacking the top of the bottle (nowat the bottom). This moves thebottle suddenly away from theketchup, moving the ketchup down,relative to the bottle. (The greenstuff is Solarcaine.)

Details

127Demo #


Related Demos

References

Other Uses

9/9/2019DateChecked

YesChecked

GLASS WATER HAMMER

1F30.21DCS #

1 MechanicsArea


Topic

1F30 Inertia ofMotion

Concept

glass water hammer, Newton, first law, inertia, vacuum,pressure, force,

Keywords

ActiveStatus

17Location

�� old noteffective forlecture

Rating

When water inside the vacuum tubefalls, it sounds like a hammer hittinga nail.

BriefDescription

25 cm-long all glass tube with a bulb at one end, is filledwith water, evacuated and vacuum sealed.

EquipmentNeeded

In this demonstration the water fallsjust as a solid object, making a clankas it hits bottom.

Cannot be outside during wintermonths!

Details

139Demo #


Related Demos

Central Scientific Company (CENCO’99,122); The PhysicsTeacher (TPT2(4),178); Hilton (M-6c); Sutton (M290).

References

Other Uses

9/9/2019DateChecked

YesChecked

BALL LAUNCHER

1D60.40DCS #

1 MechanicsArea

1F Newton’s FirstLaw

Topic

1F10 MeasuringInertia

Concept

ball launcher, projectile motion, two dimensions (2D),parabolic trajectory, fall, drop, gravity, range

Keywords

ActiveStatus

18Location


Rating

1. Put the foam balls (only 2 remain)into the pitching machine2. Turn on pitching machine and letit warm-up3. Quickly depress/click the “HomePlate” pad and observe the ballsmotion4. IMPORTANT: Please keep aneye on the balls, since we only have

BriefDescription

In Box:1. Motorized Pitching Machine with attached “Home Plate”stepping pad2. 2 foam balls (2 balls are missing)Additional Equipment:3. 3 C-size batteries (1.5 V each)

EquipmentNeeded

1. Once the Pitching Machine hasbeen “warmed up” it should takeapproximately 10 seconds beforeyou can launch the first ball and 5seconds to launch the second ball.

Details

146Demo #


Related Demos

The Physics Teacher (15(7), 432).References

Other Uses


YesChecked

Pull out the Tablecloth Demo Kit

DCS #

1 MechanicsArea

1F Newton’s FirstLaw

Topic

1F20 Inertia ofRest

Concept

Tablecloth, magician, trick, pull, out, kit, silverwearKeywords

ActiveStatus

17Location


Rating

-An excellent demo to demostrateNewton’s Laws-A copy of the old magician’s trick ofyankijng out a tablecloth

BriefDescription

n/aEquipmentNeeded

Can be used on any smooth surface

Set the tablecloth down, and thenarranage a place setting

Grasp an edge of the tablecloth,then quick pull

Contains: -One tablecloth -One Bowl One set of silverwear (knife, fork,spoon)

Details

325Demo #


Related Demos

References

Other Uses


YesChecked

FREEFALL BUCKET

1G20.40DCS #

1 MechanicsArea

1G Newton'sSecond Law

Topic

1G10 Force, Mass,and Acceleration

Concept

force, mass, acceleration, Newton, second law, bucket,tennis ball, drop, free fall, gravity,

Keywords

ActiveStatus

19Location


Rating

Drop the bucket with two tennis ballson rubber bends, extending from thecenter over the edge of a bucket.Two ball are pulled in to the bucketin free fall.

BriefDescription

Bucket with two tennis balls on the rubber bends. Rubberbands attached to the metal hook in the center of bucketbottom.

EquipmentNeeded

Details

150Demo #

Ropes are not elastic.Suggestions forImprovement

Related Demos

American Journal of Physics (AJP 30(12), 929), ThePhysics Teacher (TPT 21(8), 521).

References

Other Uses

9/9/2019DateChecked

YesChecked

ATWOOD’S MACHINE

1G10.40DCS #

1 MechanicsArea


Topic


Concept

Atwood, Atwoods, machine, force, mass, acceleration,equilibrium, Newton, second law

Keywords

ActiveStatus

17Location


Rating

Attach pulley wheel to the lab stand,place pulley cord with mass hangerson the wheel. Use set of differentmasses to demonstrate Equilibrium,Newton’s Second Law.

BriefDescription

Stand with a rodEquipmentNeeded

Details

134Demo #


Related Demos

Freier & Anderson (Ms-7), Sutton (M-110).References

Other Uses

9/9/2019DateChecked

YesChecked

REMOTE CONTROLLED RACE CAR

1G10.55DCS #

1 MechanicsArea


Topic


Concept

race car, force, mass, acceleration, Newton, second law,conservation, momentum, torque,

Keywords

Needs RepairStatus

19Location

�� oldRating

This race car does not rotate itswheels to turn, just one of itsinteresting characteristics. You canadjust the pitch of the main chassis,bringing the moment arm of thevehicle into play. It has two differentsizes of main wheels to run on, canspin in a circle indefinitely, and hasmany other tricks.

BriefDescription

Race Car, Remote Control, 6 Volt battery for car, 9 Voltbattery for control, Battery charger for 6 Volt.

EquipmentNeeded

The 6 Volt Battery loses powerquickly. Recommend recharge afterevery use.

Details

153Demo #

Battery pack does not work, even after full charge. This isthe same battery (6V in 100) that is used for the collision car(demo 152)


Related Demos

References

Other Uses

9/9/2019DateChecked

YesChecked

Floor cart and heavy ball

DCS #

1 MechanicsArea

1H Newton’s ThirdLaw

Topic

1H10 Action andRecoil

Concept

conservation of momentum, floor cart, heavy ball,Keywords

ActiveStatus

Floor/Cart end ofE&M hall

Location


Rating

While sitting on cart, throw heavyball in the direction of travel of thecart and observe the reaction.

BriefDescription

EquipmentNeeded

the cart will not travel far due tointernal friction.

Details

001Demo #

easier rolling cart.Suggestions forImprovement

Related Demos

References

Other Uses

9/9/2019DateChecked

YesChecked

CENTER OF MASS WOODEN STICK

1J10.09DCS #

1 MechanicsArea

1J Statics of RigidBodies

Topic

1J10 Finding theCenter of Gravity

Concept

center of mass, wooden stick, gravity, balance, statics,stable, stability,

Keywords

ActiveStatus

17Location


Rating

Place center of mass of the woodenstick with wooden balls (balls aredifferent diameters and differentmass) at its ends on the stand withthe sharp point. This demonstrationshows that center of mass of asystem defines its stability.

BriefDescription

Wooden stick with a small and a big wooden balls attachedto the ends of the stick; Metal stand with a sharp point at theend.

EquipmentNeeded

Details

131Demo #

Does not balance about the hole in the stick. Mass needs tobe added to the side with the small ball.


Related Demos

References

Other Uses


YesChecked

CENTER OF GRAVITY CHALKBOARD

1J10.12DCS #

1 MechanicsArea


Topic


Concept

center of gravity, chalk board, chalkboard, hang, suspend,mass,

Keywords

ActiveStatus

30Location


Rating

Hang board at one hole(use theincluded rod), hang plumb bob fromsame point, and use a chalk to makea quick vertical line on the board(repeat 4 times). Now, hang theboard at another hole and make avertical line again. After this is donetwo or three times, the lines shouldintersect at one point. This point is

BriefDescription

Irregular shape black board with four holes; White chalk.

Optional: stand to hang the board from

EquipmentNeeded

If using stand, one must hold thestand to prevent tipping over.

Details

148Demo #


Related Demos

Freier & Anderson (Mp-1,3,4,8,9,11; Mu-18).References

Other Uses

9/9/2019DateChecked

YesChecked

Center of Mass - 2 Liter Bottle & Oak Board

DCS #

1 MechanicsArea


Topic


Concept

Center, gravity, board, balance, soda bottleKeywords

ActiveStatus

19Location

��Rating

A two liter bottle with the neck stuckthrough a board balances perfectly,illustrating the center of mass of thesystem.

BriefDescription

In Box:1. 2 Liter Bottle with Orange Soda2. Oak Board with small hole

EquipmentNeeded

Details

128Demo #


Related Demos

References

Other Uses


YesChecked

Center of Mass - Foam Insulation Shapes

DCS #

1 MechanicsArea


Topic


Concept

Center of mass, COM, foam shapes, shape, shapes, dots,UV lights, florescent

Keywords

ActiveStatus

28Location


Rating

Shows how an object rotates aroundits center of mass.

BriefDescription

COM shapesoptional: use with UV lights to have the florescent dotsvisually pop out for audience

EquipmentNeeded

Two florescent dots are located oneither side of each shape. One dotmarks COM and the other is arandom pt. Throw a shape in the airso it rotates. Throw the object upwith COM dot facing the audienceand the COM dot looks as if it is notrotating.

Details

143Demo #


Related Demos

References

Other Uses


YesChecked

Balancing Birds

1J10.09DCS #

1 MechanicsArea


Topic


Concept

center of mass, balance, balancing birdsKeywords

ActiveStatus

17Location


Rating

Place bird on the stand found in box,your finger, or any other object andwatch it balance! Bird is made socenter of mass is directly below it’sbeak.

BriefDescription

stand can be found in box or be creative and find your ownstand

EquipmentNeeded

Details

133Demo #


Related Demos

References

Change the center of mass by adding tape and otherobjects

Other Uses


YesChecked

LEANING TOWER OF PISA

1J11.10DCS #

1 MechanicsArea


Topic

1J11 ExceedingCenter of Gravity

Concept

leaning tower of Pisa, inertia, statics, center of mass,gravity, stable, stability,

Keywords

ActiveStatus

17Location

�� good andeffective

Rating

This tower shows that center ofmass of a system defines itsstability.

BriefDescription

The base of the leaning tower, the top of the leaning tower.EquipmentNeeded

A model of the tower constructed insections. Place the tower on thetable without the top and it willremain upright. Place the top on thetower and center of gravity is nowshifted and the tower will fall over.

Details

138Demo #


Related Demos

Sutton (M-34), Hilton (M-18b.1), Freier & Anderson (Mp - 1,3, 4, 8, 9, 11; Mu - 18).

References

Other Uses


YesChecked

DOUBLE CONE AND PLANE

1J11.50DCS #

1 MechanicsArea


Topic


Concept

double cone, inclined plane, center of mass, gravity, statics,roll, rolling, up, uphill, hill

Keywords

ActiveStatus

21Location


Rating

Set the double cone on the bars ofthe inclined plane - its center ofgravity is lower so, although thecone appears to roll up the plane, itscenter of gravity is actually movingdownward.

BriefDescription

Double coned cylinder; Increasing width inclined plane.EquipmentNeeded

May need a slight push to startrolling. BE SURE YOU HAVE ALEVEL SURFACE!!!!!!!!!

Details

147Demo #


054Related Demos

Central Scientific Company CENCO’99,40); Freier &Anderson (Mr-1); Sutton (M-37); Hilton (M-18a.3).

References

Other Uses

9/9/2019DateChecked

YesChecked

CENTER OF MASS HAMMER AND BOARD

1J11.51DCS #

1 MechanicsArea


Topic


Concept

center of mass, gravity, statics, balance, hammer, support,torque

Keywords

ActiveStatus

18Location


Rating

Place center of mass of the boardwith a hammer on the edge of thetable. You can see, that the centerof gravity of the system can defineits stability.

BriefDescription

In Box:Two part board with a hinge and a hammer suspended fromone part of the board.Additional Equipment:Two wooden blocks and a wooden board (for table)

EquipmentNeeded

Even though the hammer isconnected past the hinge, thelocation of the center of mass doesnot pull the board down.

Details

132Demo #


Related Demos

References

Other Uses

9/9/2019DateChecked

YesChecked

Tumbling Tower

DCS #

1 MechanicsArea


Topic


Concept

Center of mass, mass, COM, balanceKeywords

ActiveStatus

17Location


Rating

Stacking blocks such that the lastblock has most of its mass hangingover the edge.

BriefDescription

Blocks (in box); board or other edge to hang offEquipmentNeeded

Align the first block on an edge so aportion of it is over the edge.Continue to stack blocks on top ofthe first so the 2nd blocks hangs offthe edge slightly more than the first.Continue to stack in this manneruntil the last block, when comparedto the first block, has nearly all itsmass off the initial starting edge.

Details

140Demo #


Related Demos

References

Other Uses


YesChecked

TENSION IN A STRING

1J30.20DCS #

1 MechanicsArea


Topic

1J30 Resolution ofForces

Concept

Newton, scale, weights, resolution, force, statics, tension,string,

Keywords

ActiveStatus

2Location


Rating

Notice the weight of a single masshung from a spring scale. Compareit to the weight shown on a springscale between two equal massesover pulleys. The weight of a masshung from a single spring scale iscompared to the weight shown on aspring scale between two massesover pulleys.

BriefDescription

Newton's scale mounted to the stand with two pulleys; metalcable and two weights - 1000g each.

EquipmentNeeded

Details

159Demo #


Related Demos

PIRA 500References

Other Uses

9/9/2019DateChecked

YesChecked

WOODEN CARTS

1J30.?DCS #

1 MechanicsArea


Topic


Concept

wooden carts, resolution of forces, friction, mass,acceleration, statics, potential energy,

Keywords

In StorageStatus

Storage (outside)Location

� oldRating

Use this carts when you want todemonstrate resolution of forces,acceleration down a plane, work andpotential energy, and friction.

BriefDescription

Inclined plane with pulley; Cart with a string and set ofweights.

EquipmentNeeded

Put cart with a string on the inclinedplane with a pulley. Hang weights onthe string over the pulley so thesystem is in static equilibrium. Addmass to the cart until it begins slidedown the incline; the frictional forcemust be in the upward direction.Hang additional weight on the stringover the pulley until the cart beginsto slide up the incline; the frictionalforce must be in the downwarddirection.

Details

312Demo #


Related Demos

University of Maryland Physics Lecture-DemonstrationFacility (B2-03);Central Scientific Company (CENCO’99,42).

References

Other Uses

9/9/2019DateChecked

YesChecked

BREAKING STRING WITH HINGE

1J30.30DCS #

1 MechanicsArea


Topic


Concept

break, breaking, string, hinge, statics, resolution, force,tension, vector,

Keywords

ActiveStatus

19Location


Rating

A hinged board gives enoughmechanical advantage to break astring tied between two blocks.

BriefDescription

White string. Red string is a little too toughEquipmentNeeded

When the ends of the hinged piecesof wood are placed in the notches ofthe two wooden blocks and thehinged block is loaded, the rope,fastened to two heavy screw eyes,may be broken by the application ofa much smaller force than would berequired in the case of a direct pull.

The extra piece of wood can beused between the hand of thepresenter and the hinge to avoidpinching.

Details

170Demo #


Related Demos

Sutton (M-16); Freier & Anderson (Mj-3).References

Other Uses

9/9/2019DateChecked

YesChecked

PARALLEL ARMS BALANCE

1J40.50DCS #

1 MechanicsArea


Topic

1J40 Static TorqueConcept

Roberval balance, parallel arms, statics, torque, force,stable, equilibrium, neutral,

Keywords

ActiveStatus

5Location


Rating

This parallel arms frame is in neutralequilibrium when equal weights areplaced onto the two outer arms, itwill remain at rest in any position. Ifa net weight is placed on either side,that side will go down.

BriefDescription

Parallel arms frame on a stand; two 1000g weights.EquipmentNeeded

Small loops of rope are included inbox to hang weights from.

Does not return to zero by itself

Details

162Demo #

Lube the contacting surfaces.Suggestions forImprovement

Related Demos

Sutton (M-42); University of Maryland Physics Lecture-Demonstration Facility (B2-41).

References

Other Uses


YesChecked

METER STICK BALANCE

1J40.20DCS #

1 MechanicsArea


Topic

1J40 Static TorqueConcept

meter stick, meterstick, balance, center of mass, gravity,torque, knife edge,

Keywords

ActiveStatus

18Location


Rating

The position of the center of gravityof the balance may be varied bysliding the knife edge up and downon the rod in the center of the meterstick.

BriefDescription

All included.EquipmentNeeded

Because the difference in densitymay be different on each side of thestick, the 50 cm point is notnecessarily the point at which theknife edge should be located inorder to bring the meter stick exactlyhorizontal.

Details

137Demo #


Related Demos

References

Other Uses


YesChecked

WALKING THE SPOOL

1K10.30DCS #

1 MechanicsArea

1K Application ofNewton's Laws

Topic

1K10 DynamicTorque

Concept

walking the spool, torque roller, rope, dynamic, friction,Keywords

ActiveStatus

11Location


Rating

Pull on the rope wrapped around thehub of a spool at various angles tomake the spool go forward or back.

BriefDescription

Big wooden spool with a rope wrapped around the hub of aspool.

EquipmentNeeded

Details

300Demo #


Related Demos

Freier & Anderson (Mo-3); Sutton (M-24); Hilton (M-10d).References

Other Uses


YesChecked

INCLINED PLANE WITH PROTRACTOR

1K20.35DCS #

1 MechanicsArea


Topic

1K20 FrictionConcept

incline, plane, Newton, law, friction, angle, protractor, force,pulley, resolution, coefficient, angle of repose,

Keywords

ActiveStatus

43Location


Rating

This inclined plane can be used withfriction blocks or loaded roller forprecision force resolution or frictioncoefficient measurements.

BriefDescription

Inclined plane with 1 cm wide slit along it’s centerline andbuilt-in length and angle scales (included)

EquipmentNeeded

The plane scales arrangementallows angle measurements to bemade directly or by trigonometry.

Details

075Demo #


171Related Demos

Central Scientific Company (CENCO’99,42); Hilton (M-11a).References

Other Uses


YesChecked

CHAIR-O-NAILS

1K30.11DCS #

1 MechanicsArea


Topic

1K30 PressureConcept

chair of nails, bed, stool, Newton, pressure,Keywords

ActiveStatus

Floor/CartLocation


Rating

Sit down on the chair with nails. Howabout no.

BriefDescription

Chair with nails. Safety styrofoam cover. Balloon adds toshow sharpness of nails.

EquipmentNeeded

Details

352Demo #


Related Demos

PIRA 200References

Other Uses


YesChecked

UPHILL ROLLER

1K10.50DCS #

1 MechanicsArea

1K Applications ofNewton’s Laws

Topic

1K10 DynamicTorque

Concept

uphill roller, statics, center of mass, gravity, disk, cylinder,Keywords

ActiveStatus

20Location


Rating

This disk will move up if you will putit on the adjustable ramp.

BriefDescription

Adjustable Ramp and Metal Stand.EquipmentNeeded

Be careful with this demo asdropping it may cause the weight tofall out of the wheel. It’s onlystyrofoam!

Details

054Demo #



Freier & Anderson (Mp-3).References

Other Uses

9/9/2019DateChecked

YesChecked

Friction Blocks

DCS #

1 MechanicsArea


Topic


friction, coefficient of friction, static, dynamic, forceKeywords

ActiveStatus

20Location

��Rating

Friction blocks can be pulled acrossthe lecture table with a dial scale.The block may be turned on differentedges to show the independence offrictional forces on area. Similarblocks with various types of surfacescan be used to show the effects ofdifferent kinds of contact planes.

BriefDescription

Dial scale, friction blocksEquipmentNeeded

Friction blocks can be dragged onthe lecture bench-top using a scale.Additionally, by flipping the blockover onto one of its edges, one candemonstrate that the frictional forcebetween two sliding surfaces isindependent of the area of contact.Further, by stacking identical blockson top of the sliding block, thespring-scale indicates that thefrictional force is a function of thenormal force applied by the slidingobject to the plane surface. Andfinally, to demonstrate thedependence of the coefficient offriction (both static and dynamic) onthe nature of the sliding surfaces,sandpaper and rubber have beenglued onto some of the surfaces.

Details

171Demo #


075Related Demos

References

Can use an inclined plane to show how different surfaceshave different amounts of friction

Other Uses


YesChecked

Tug O’ War Kit

DCS #

1 MechanicsArea


Topic


Tug of War, friction, Newton’s laws,Keywords

ActiveStatus

20Location


Rating

Pick two groups of people (twogroups of 3 works well) and havethem do a tug o’ war on thelinoleum. Have the winning goupplace plastic sacks over their feet.Repeat the tug o’ war and note theprevious winners no longer have theadvantage since their grip on thefloor is reduced

BriefDescription

Green rope and plastic grocery bagsEquipmentNeeded

Also see DEMO# 052 for longerrope.

There are other sections of rope inthe demo room that are longer formore people - The instructions sayup to 9 in a group, but two groups of3 seems the best with the greenrope provided as it is too short forthat many.

Details

047Demo #


052Related Demos

References

Other Uses


YesChecked

JACK SCREW

1M20.35 / 1M50.?DCS #

1 MechanicsArea

1M Work andEnergy

Topic

1M20 SimpleMachines

Concept

jack screw, mechanical power, inclined plane, work, energy,simple machine, efficiency,

Keywords

In StorageStatus

StorageLocation


Rating

These Jack Screws purpose todemonstrate simple machines,efficiency and mechanicaladvantage.You can use Jack screw to lift theback end of the red wagon with loador even a person aboard. It can beeasily operated with one hand.

BriefDescription

One Jack Screw; Metal rod as a handle; Red wagon;Wooden block (placed between Screw and wagon); Load inthe wagon.

EquipmentNeeded

Details

313Demo #


Related Demos

Central Scientific Company (CENCO’99,l44); University ofMaryland Physics Lecture-Demonstration Facility (B3-22).

References

Other Uses


YesChecked

RATTLEBACK

1M40.90DCS #

1 MechanicsArea

1M Work andEnergy

Topic

1M40 Conservationof Energy

Concept

rattleback, top, rotational, stability, conservation, angularmomentum, inertia, kinetic, torque, work energy,

Keywords

ActiveStatus

19Location

�� good butnot for lecture

Rating

Place “Rattle back” flat side up onsmooth level surface. Tap it gentlyon either end and it will spin. Rock itand it will spin. Spin it clockwise -and it will stop and turn backward.

BriefDescription

A Rattle Back - a half-ellipsoid object carved so that it willspin in only one direction.

EquipmentNeeded

They can magnify if you will turnthem over FLAT SIDE DOWN.

Details

155Demo #


Related Demos

Educational Innovations (EI’01(10),37).References

Other Uses


YesChecked

DOUBLE LOOP THE LOOP

1M40.21DCS #

1 MechanicsArea

1M Work andEnergy

Topic


Concept

double loop the loop, high speed, work, energy, friction,conservation, potential, kinetic, Hot Wheels, car, track,

Keywords

Needs RepairStatus

21Location

�� old noteffective forcollege age

Rating

Send car down the launch ramp andit will go through double speed loops

BriefDescription

1 vehicle, 11 ft. (3.3 m) of track, C-clamp, 2 loop bases,stand with rod to make a launch ramp.

EquipmentNeeded

A launch ramp height could beadjusted and one loop could beused instead of two ones. You canattach ramp clamp to the end of thetable or use a high lab stand for that.

Since track pieces are curved inbox, it helps to unbox this one earlyand straighten out the track pieces.

Details

174Demo #

Larger box so track pieces can lie without bending andbecoming permanently curved. More track connectingpieces as some are broken.


Related Demos

Central Scientific Company (CENCO’99, 57); University ofMaryland Lecture-Demonstration Facility (D1-53).

References

Other Uses


YesChecked

YO-YO

1M40.50DCS #

1 MechanicsArea

1M Work andEnergy

Topic


Concept

yo-yo, yo yo, work, energy, conservation, friction, angularmomentum, centripetal force, central, centrifugal,

Keywords

ActiveStatus

18Location

�� oldRating

Hold the end of the string to allowthe yo-yo to unwind and wind backup again. It illustrates transformationbetween various forms of energy.

BriefDescription

Yo-yo.EquipmentNeeded

Details

154Demo #

New yo-yosSuggestions forImprovement

Related Demos

The Physics Teacher (TPT 28,92 (1990)); University ofMaryland Physics Lecture-Demonstration Facility (D1-65).

References

Other Uses


YesChecked

BOWLING BALL PENDULUM

1M40.10DCS #

1 MechanicsArea

1M Work andEnergy

Topic


Concept

bowling ball pendulum, work, energy, conservation, swing,Keywords

ActiveStatus

Shelf 3Location


Rating

Stand and bring the bowling ball upto your nose. Release the ball withno initial velocity. Stand very stilluntil the ball swings back. Do notlean forward! Hold a bowling ballsuspended from the ceiling againstyour nose and let it swing.

BriefDescription

Rope and hook to mount to.EquipmentNeeded

Good but need to have stable placeto hang from.

Details

353Demo #


Related Demos

The Physics Teacher (TPT 22(6),384); Freier & Anderson(Mr-6), Meiners (9-1.2); Hilton (M-14b).

References

Other Uses


YesChecked

LOOP THE LOOP

1M40.20DCS #

1 MechanicsArea

1M Work andEnergy

Topic


Concept

loop the loop, high speed, work, energy, friction,conservation, potential, kinetic, Hot Wheels, car, track, ball,rolling,

Keywords

ActiveStatus

31Location


Rating

Release a metal ball down the trackand it will not leave the track whilepassing around the loop-the-loop.

Loop and Ramp are marked forhight in cm above 0 point.

BriefDescription

Big Metal Loop and Metal Ball.EquipmentNeeded

Note: the ball will complete the loopfrom the ~75cm point and higher(though it will become brieflyairborne at 75cm). Expect the ballto fall off below this.

Details

184Demo #


Related Demos

Central Scientific Company (CENCO’99, 57); The PhysicsTeacher (TPT 34, (1996)); University of Maryland PhysicsLecture-Demonstration Facility (D1-53).

References

Other Uses


YesChecked

STOPPED PENDULUM

1M40.15DCS #

1 MechanicsArea

1M Work andEnergy

Topic


Concept

stopped, pendulum, conservation, energy, height, work,oscillations, period

Keywords

MissingStatus

1 MechanicsLocation


Rating

A pendulum is started at the heightof a reference line and returns tothat height even when a stop isinserted.

BriefDescription

-The lined foam-core board-3 aluminum rods, 1 at 4 ft., 2 at 1 foot. 2 clamps to attachall the rods-a 1 kg mass to use use as a pendulum-3 to 4 feet of string

EquipmentNeeded

The foam-core board is used tomeasure the height on either side ofthe swinging pendulum. In themiddle of it’s swing, one of the rodsstops its swing so that only a fractionof the original length of string is usedfor the swing to the other side.despite losing a significant portion ofit’s length the mass will still go ashigh on the other side as it started,conserving energy.

Details

9008Demo #


Related Demos

References

Other Uses


NoChecked

Smashing Steel Spheres

DCS #

1 MechanicsArea

1M Work andEnergy

Topic


Concept

Steel balls, burn, paper, energy conversion, mechanical,heat

Keywords

ActiveStatus

13Location

��Rating

Smashing the balls together canburn a hole in a piece of paper

BriefDescription

Steel spheres; paper (both in box)EquipmentNeeded

When the spheres are strucktogether, enough heat is generatedat the contact to burn a hole througha piece of paper.

Details

099Demo #


Related Demos

References

Other Uses


YesChecked

PILLOW PUNCHERS

1N10.?DCS #

1 MechanicsArea

1N LinearMomentum

Topic

1N10 Impulse andThrust

Concept

pillow punchers, linear momentum, impulse, force, thrust,collision, impact, time, dampening

Keywords

ActiveStatus

14Location


Rating

We can use this couple of pillowpunchers for impulse experiment.Punch with glove and without,impulse is the same, but force isdifferent.

BriefDescription

Pillow punchers.EquipmentNeeded

Don’t punch to hard, may causepersonal injury!

Details

169Demo #


Related Demos

References

Other Uses


YesChecked

COLLISION CAR

1N10.35DCS #

1 MechanicsArea

1N LinearMomentum

Topic

1N10 Impulse andThrust

Concept

collision car, linear momentum, impulse, force, thrust,collision, impact, time, remote control,

Keywords

Needs RepairStatus

18Location


Rating

Run it forwards and backwards intowalls and barricades. You canrebuild it by pressing the activationbutton, this car automatically repairsitself, stretching back to full length.Then, run it again.

BriefDescription

Radio controlled vehicle, 6 Volt Rechargeable NiCd BatteryPack for vehicle, Transmitter and 9 Volt Alkaline Battery forit, 6 Volt NiCd battery 4 hour Charger.

EquipmentNeeded

ALWAYS turn main vehicle switchoff after play and remove battery!DO NOT charge the Battery Packimmediately after use. Wait until it iscooled before charging!DO NOT charge the Battery Pack formore than 5 hours!

Details

152Demo #

Battery pack does not work, even after full charge. This isthe same battery (6V in 100) that is used for the race car(demo 153)


Related Demos

References

Other Uses


YesChecked

MAGNETIC SKATES

1N20.10 / 5H20.?DCS #

1 MechanicsArea

1N LinearMomentum

Topic

1N20 Conservationof LinearMomentum

Concept

magnetic skates, linear momentum, conservation, force,Keywords

ActiveStatus

6Location


Rating

Use the X -knife to cut the electricaltape, which held magnetic skatestogether. You will show that skateswill hit two masses at the same time.Wooden ruler lets you set masses atthe same distance from the skates.

BriefDescription

The pair of the magnetic skates; Meter stick; Two 1000 gmasses; Smooth surface; Set of weights. (electrical tape)

EquipmentNeeded

See what happens if you placesome weight on one skate andrepeat the demonstration.

You can use white board (inclineplane board without stand) as agood surface for this demonstration.If you will use a small piece ofelectrical tape, you do not need tocut it with knife, tape will slide fromone skate in 10 seconds or so.

Details

175Demo #


Related Demos

American Journal of Physics (AJP 33(1), xxv), Freier &Anderson (Md-3, Mp-16), Hilton (M-15c).

References

Other Uses


YesChecked

MAGNETIC AIR HOCKEY PUCKS

1N40.20DCS #

1 MechanicsArea

1N LinearMomentum

Topic


Concept

magnetic air hockey pucks, friction, molecular, crystal,structure, energy level, wave motion, travelling waves, airtable

Keywords

ActiveStatus

21Location


Rating

Turn on the air and the magneticpucks tend toward a static structureas shown in picture. A change ofposition of one puck influencesothers. Waves can be made totravel back and forth through thestructure. Model of electron flow?

7D50.14 = Rutherford scattering on

BriefDescription

EquipmentNeeded

There is a button on back of tablethat will turn table on for 20 seconds

Details

172Demo #


173Related Demos

References

Other Uses


YesChecked

MAGNETIC AIR HOCKEY PUCK SUPPLIES

1N40.20DCS #

1 MechanicsArea

1N LinearMomentum

Topic


Concept

magnetic air hockey pucks, friction, molecular, crystal,structure, energy level, wave motion, travelling waves,

Keywords

ActiveStatus

21Location


Rating

Turn on the air and the magneticpucks tend toward a static structureas shown in picture. A change ofposition of one puck influencesothers. Waves can be made totravel back and forth through thestructure. Model of electron flow?

7D50.14 = Rutherford scattering on

BriefDescription

EquipmentNeeded

Details

173Demo #


172Related Demos

References

Other Uses


YesChecked

NEWTON’S CRADLE

1N30.10DCS #

1 MechanicsArea

1N LinearMomentum

Topic

1N30 Collisions inOne Dimension

Concept

Newton’s cradle, conservation, momentum, energy,collision, kinetic, balls, suspend, elastic,

Keywords

ActiveStatus

2Location


Rating

Observe the effects of displacingdifferent numbers of balls, workingwith Newton’s Cradles. Try one ballfirst, then two and so on up to fiveballs at once.

BriefDescription

Newton’s cradle - stand with a five suspended nickel-platedsteel balls.

EquipmentNeeded

First check that the wires arehanging straight.

Details

065Demo #

Devise fine-adjustment method for tightening and looseningstrings to align balls that does not require pliers.



The Physics Teacher (TPT 34, 181-183 (1996)); CentralScientific Company (CENCO’99,78); PIRA 200.

References

Other Uses


YesChecked

NEWTON’S CRADLE - SMALL

1N30.10DCS #

1 MechanicsArea

1N LinearMomentum

Topic


Concept

Newton’s cradle, conservation, momentum, energy,collision, kinetic, balls, suspend, elastic,

Keywords

MissingStatus

19Location


Rating

Observe the effects of displacingdifferent numbers of balls, workingwith Newton’s Cradles. Try one ballfirst, then two and so on up to fiveballs at once.

BriefDescription

Newton’s cradle - stand with a five suspended nickel-platedsteel balls.

EquipmentNeeded

First check that the wires arehanging straight.

Details

066Demo #

One ball broke off of its supporting string. Glue makes arepair impractical. Replacement is likely cheaper than thetime to repair.



The Physics Teacher (TPT 34, 181-183 (1996)); CentralScientific Company (CENCO’99,78); PIRA 200.

References

Other Uses


NoChecked

AIR TABLE

1N40.20DCS #

1 MechanicsArea

1N LinearMomentum

Topic

1N40 Collisions inTwo Dimensions

Concept

air table, friction, conservation, linear momentum, collision,two dimensions, 2D,

Keywords

MissingStatus

24Location


Rating

Turn on the Air Table, which isequipped with a built-in air blowerthat emits a continuous, evenstream of air. With several pucks onthe air table you can show two-dimensional, almost friction-freemovement, and collisions in twodimensions.

BriefDescription

Air table and three pucks.EquipmentNeeded

There is another air table (demo172), so this one is redundant.

Details

088Demo #



Central Scientific Company (CENCO’99,73); University ofMaryland Physics Lecture-Demonstration Facility (C7-42).

References

Other Uses


NoChecked

AIR TRACK Carts & Accessories

1N30.30DCS #

1 MechanicsArea

1N LinearMomentum andCollisions

Topic


Concept

air track, glider, cart, velocity, motion, inertia, momentum,collision, conservation, energy, dynamic, friction, Newton,first law, second law, third law, fan cart,

Keywords

ActiveStatus

30Location


Rating

1. This air track helps you to showcollision experiments.

BriefDescription

1. Air Track2. Set of Air Track Gliders (boxed)3. Quiet Air Source on Equipment Shelf

EquipmentNeeded

Details

062Demo #


068, 069, 070,071,087

Related Demos

Central Scientific Company (CENCO’99, 68).References

Other Uses


YesChecked

Giant Newton’s Cradle

1N30.11DCS #

1 MechanicsArea


Topic


Concept

Newton’s cradle collision, conservation of energy,momentum.

Keywords

ActiveStatus

Floor/CartLocation


Rating

HUGE Newton’s cradle made withbowling balls.

BriefDescription

EquipmentNeeded

It only goes for a few hits as thebowling balls absorb some motionare not perfectly mounted inline.

Can demonstrate elastic andinelastic collisions.

Details

067Demo #

Replace bowling balls with object that provide better elasticcollisions.



References

Other Uses


YesChecked

Air Tracks

DCS #

1 MechanicsArea


Topic


Concept

air, track, Stull-Ealing linear air track, collision, momentum,conservation, energy,

Keywords

ActiveStatus

Floor/CartLocation


Rating

Air tracks for Air track carts andaccoessories

BriefDescription

Quiet air source (Demo 068)

Air track carts and accessories (Demo 062)

EquipmentNeeded

Demo 070 seems to be straighterthan the other long track (Demo071).

Details

069, 070, 071Demo #

Track 070 needs a new end plate or significant sealing onthe input side as the existing one is bent quite badly anddoes not seal well.



References

Other Uses


YesChecked

HOOP AND DISK

1Q10.30DCS #

1 MechanicsArea

1Q RotationalDynamics

Topic

1Q10 Moment ofInertia

Concept

hoop, disk, moment of inertia, rotational, kinetic energy,acceleration,

Keywords

ActiveStatus

20Location


Rating

A metal hoop and a wooden diskhave equal masses and equaldiameters. When you place the ringand disc on an inclined plane andrelease them, they accelerate atnoticeably different rates as they roll.

BriefDescription

Adjustable ramp, metal stand, metal hoop, wooden disk.EquipmentNeeded

The smaller moment of inertia of thewooden disk leads to a largeracceleration, although both have thesame kinetic energy at the bottom ofthe ramp.

Details

048Demo #


Related Demos

PIRA 200, Hilton (M-19c), Freier & Anderson (Ms-3)References

Other Uses


YesChecked

MOMENT OF INERTIA RODS (WANDS)

1Q10.10DCS #

1 MechanicsArea


Topic


Concept

inertia rods, torque twisters, rotation, center, mass,Keywords

ActiveStatus

29Location


Rating

1. Hold one rod at its center in yourhand & rotate it by twisting your wrist2. Do the same with the second rod3. You can feel that less effort isneeded to rotate one rod and moreeffort is needed to rotate the otherrod

BriefDescription

1. Inertia Rod with a large mass located at its center2. Inertia Rod with large masses located at its ends

EquipmentNeeded

1. The rods have the same mass,but the placement of the mass isdifferent for each rod2. One rod has most of its mass atthe center, while the other has mostof its mass at the ends3. You need less effort to rotate therod with the mass at the center

Details

040Demo #

Both rods are missing from the box.Suggestions forImprovement

Related Demos

Central Scientific Company (CENCO’99,88); PIRA 200;Meiners (12-3.3).

References

Other Uses


YesChecked

RACING SOUP CANS

1Q10.50DCS #

1 MechanicsArea


Topic


Concept

soup cans, inclined plane, rolling objects, moment of inertia,rotational, kinetic energy, acceleration,

Keywords

Inactive (trashed)Status

20Location


Rating

Three soup cans - one with chickenbroth, one with variable density andone with very thick soup. They havethe same weight. Roll them down onthe ramp and see which one will befaster.

BriefDescription

Cans of different density soup - one with chicken broth andthe other one with hearty soup (the same weight).Adjustable ramp with stand.

EquipmentNeeded

Details

050Demo #

One of the cans has a significantly different mass than theother two.


Related Demos

The Physics Teacher (TPT 16(8), 553).References

Other Uses


YesChecked

MOMENT OF INERTIA ROLLERS

1Q10.?DCS #

1 MechanicsArea


Topic


Concept

Rollers, rotational energy, disks, track, mass, moment ofinertia, kinetic, velocity,

Keywords

ActiveStatus

19Location


Rating

The different rollers have differentmass disks and different diameteraxles. When they roll in the track,the disks will spin at different rates,and so the disks with smaller axleswill move more slowly - more energyis put into rotation and less intotranslation.

BriefDescription

Rotational Energy Discs; Wooden track with blocked endslocated near the pillar (Demo 409), Metal track with one endopen.

EquipmentNeeded

It is also interesting to use theinclined track with the open end andlet the disks continue on the tabletopafter the end of the track. The diskswill speed up noticeably afterreaching the table.

Details

043Demo #


409Related Demos

References

Other Uses


YesChecked

INERTIA AXLE

1Q10.70DCS #

1 MechanicsArea


Topic


Concept

inertia axle, rotational, moment of inertia, angularmomentum, energy, rotator,

Keywords

ActiveStatus

20Location


Rating

Place this apparatus in a clamp onthe lab stand so it could have avertical rotation. Attach the 200 gweight with the hook to the loop atthe end of the rope. The rod with twoweights will spun by the fallingmass.

BriefDescription

Inertia Axle - metal rod with two masses connected in itsmiddle to the metal bar with a rope; Long lab stand withclamps, attached to the edge of the table; 200g weight withhook.

EquipmentNeeded

The moment of inertia can bechanged by adjusting the position ofthe weights, changing theacceleration of the mass.

Details

055Demo #


Related Demos

American Journal of Physics (AJP 33(10),848); Sutton (M-166).

References

Other Uses


YesChecked

MOMENT OF INERTIA RACING DISCS

1Q10.40DCS #

1 MechanicsArea


Topic


Concept

inclined plane, rolling objects, hoop, disk, moment of inertia,rotational, kinetic energy, acceleration, racing disks

Keywords

InactiveStatus

20. Combinedwith demo 48

Location


Rating

Roll these three discs down anincline plane and see which onerotates faster.

BriefDescription

Three discs of identical mass, but weighted at the differentplaces; incline plane and lab stand.

EquipmentNeeded

Details

045Demo #



University of Minnesota Handbook (1A12.01).References

Other Uses


YesChecked

INCLINED PLANE ROLLING OBJECTS

1Q10.30DCS #

1 MechanicsArea


Topic


Concept

inclined plane, rolling objects, hoop, disk, moment of inertia,rotational, kinetic energy, acceleration, ball, sphere,

Keywords

InactiveStatus

20. Combinedwith demo 48

Location


Rating

Different objects are rolled from restdown an incline, and theiraccelerations compared. So, youcan show the effect of moment ofinertia on the acceleration of bodiesrolling down an incline.

BriefDescription

Set of rings, discs and spheres of different masses andradiuses; Inclined Plane with a stand.

**SEE DEMO # 041 & 042

EquipmentNeeded

Details

057Demo #


041 & 042Related Demos

University of Maryland Physics Lecture-DemonstrationFacility (D2-02).

References

Other Uses


YesChecked

CUP AND BALL DROP

1Q20.50DCS #

1 MechanicsArea


Topic

1Q20 RotationalEnergy

Concept

cup, ball, drop, faster than gravity acceleration, inclinedboard, hinge, stick, angular, rotational

Keywords

ActiveStatus

30Location


Rating

Use: To illustrate faster than gravityacceleration

Overview: Inclined board, where theend of the board moves faster thangravity to catch a ball.

BriefDescription

Apparatus, balls (all in box)EquipmentNeeded

Procedure: Set the apparatus up asshown. Quickly grab the supportingstick from between the hingedpieces. The ball that is on the endof the stick should land in the cup.The foam pad in the bottom of thecup will help prevent the ball frombouncing out. The supporting stickshould be placed green side down.Placing the green end of the stick onthe yellow dot (on the base of theapparatus) should produceconsistent results.

Works extremely consistently withtennis ball and billiard ball.

Details

160Demo #


Related Demos

References

Other Uses


YesChecked

MARBLE TWISTER

1Q40.70DCS #

1 MechanicsArea


Topic

1Q40 Conservationof AngularMomentum

Concept

marble twister, rotational, conservation, angular momentum,funnel, centripetal force, centrifugal, central, circular,Newton, first law, acceleration, energy, potential, work, race

Keywords

ActiveStatus

20Location


Rating

Marbles, racing down the interior ofthe Marble Twister, will increaseboth their speed and their ability to“hug” the inside tracks made by thewires as the spirals become tighter.Marbles decrease their speed, whentracks become wider.*Be sure top spirals are not bent/outof line.

BriefDescription

Marble twister with wooden base, five marbles.EquipmentNeeded

The spiraling wire path of the MarbleTwister prevents the speedingmarbles from being propelledoutward in a straight line, forcingthem into a curve and giving us theillusion that they are somehowdefying gravity - which, in fact, theyare not.

Could be used as a game forreviews.

Details

056Demo #


Related Demos


Other Uses


YesChecked

SCORCHER CHAMBER “LOOP THE LOOP”

DCS #

1 MechanicsArea


Topic


Concept

scorcher chamber, loop the loop, high speed, work, energy,friction, conservation, potential, kinetic, Hot Wheels, car,track, ball, rolling,

Keywords

ActiveStatus

8Location


Rating

Charge car for 10 seconds, place iton track leading into stunt chamber.Car will go from the bottom ofchamber to its top, will reach exitramp and after track loop can gotrough the chamber again.

BriefDescription

3 AA batteries. Rechargeable ones are included but willneed to be charged beforehand.

EquipmentNeeded

DO NOT charge car for more than10 seconds, as overcharging mayreduce the life of your car.DO NOT run car on shag carpet,dirt or wet surfaces.

It takes some (a lot!!) practice to getthe speed just right for the car to notshoot too high up the side of thechamber and fall over.

Details

063Demo #


Related Demos

References

Other Uses


YesChecked

ANGULAR MOMENTUM STOOL

1Q40.10DCS #

1 MechanicsArea


Topic


Concept

angular momentum stool, rotational, conservation, spin,weights, ice skater, torque, moment of inertia

Keywords

ActiveStatus

Floor/CartLocation


Rating

Sit down on a stool with your armsextended, holding the weights. Afterthe system is set into rotation, youpull the weights it to your chest,decreasing moment of inertia of thesystem and increasing the angularspeed of the system.

BriefDescription

Rotating stool; Two masses; Big bicycle wheel.EquipmentNeeded

You can use a big bicycle wheel withthis stool. Sit down on a stool , andturn spinning bicycle wheel over andback.

Details

355Demo #

Rotating mechanism works fine but wobbles slightly. Notsure if this is reparable without replacing.


Related Demos

Central Scientific Company (CENCO’99, 94); University ofMaryland Physics Lecture-Demonstration Facility (D3-04);The Physics Teacher (TPT 18, 1980).

References

Other Uses


YesChecked

Hero’s Engine

1Q40.80DCS #

1 MechanicsArea


Topic


Concept

Hero’s engine, heat, spin, rotate, conservation, angular,momentum, rotational, dynamics, heros engine

Keywords

ActiveStatus

20Location


Rating

Heat the bottom of the can with atorch while the top is suspended andfree to spin. A small amount ofwater (you need to add at the start)in the can will turn into steam andshoot out of the small pinholeopenings in the arm-likeappendages on the sides of the can.

BriefDescription

EquipmentNeeded

Torch is located on shelf 57, andstrikes are on shelf next to breakerbox. When using the torch, put thetorch

Details

051Demo #


Related Demos

References

Other Uses


YesChecked

Large Hoberman’s Sphere

DCS #

1 MechanicsArea


Topic


Concept

angular momentum, momentum, collapsing sphere,expanding sphere

Keywords

ActiveStatus

19Location

��Rating

Demonstrate conservation ofangular momentum for a collapsingand expanding sphere.

BriefDescription

None. Stands typically do not end well in this demo.EquipmentNeeded

Suspend the Hoberman sphere andpulley assembly. Start it turning inthe open position. Pull on the lowerstring to collapse the sphere andnote how the sphere spins muchfaster. The string can be released tolet the sphere expand again.

Hold sphere yourself and havestudent pull the string.

Details

142Demo #


Related Demos

References

Other Uses


YesChecked

ALIEN ORBITER GYRO TOP

1Q50.?DCS #

1 MechanicsArea


Topic

1Q50 GyrosConcept

alien orbiter, gyroscope, gyro, top, rotational, stability,precession, conservation, momentum, inertia, kinetic,

Keywords

ActiveStatus

20Location


Rating

Energize Giro-top by blowing in toone of the three intake ports. Placeits pointed tip on top of the base.Giro-top will stay balanced until itsenergy depletes. You can place theenergized Giro-top on its side on topof the base. It will spin there until itsenergy runs out.

BriefDescription

Gyro-top, base (two types)EquipmentNeeded

This system has been demonstratedto obey Newton’s three laws ofmotion: 1. The Law of Inertia; 2. TheLaw of constant acceleration; 3. TheLaw of Conservation of Momentum.You can place Giro-top on yourfinger, the palm of your hand, atable, the floor, or any flat, smooth,stable surface. Try placing it rightsight-up, upside-down, and on itsedge. Each time, the Gyroscopicforces will work to hold Giro-top inthat position, defying the forces ofgravity!

Since this requires blowing withmouth, wipe with alcohol before/afterusing.

Details

038Demo #

Traditional gyroscope has too much play causing vibrationsthat make it unstable at high angular velocity. Suggest anew one or remove from demo


Related Demos

References

Other Uses


YesChecked

GYROSCOPE WHEEL

1Q50.20DCS #

1 MechanicsArea


Topic

1Q50 GyrosConcept

gyroscope, gyro, wheel, top, rotational, stability, precession,conservation, momentum, inertia, kinetic,

Keywords

ActiveStatus

12Location


Rating

Place Gyroscope on a stand andspin it.

BriefDescription

Gyroscope wheel with adjustable length pin in the middle.Gyroscope base.

EquipmentNeeded

This gyroscope can be mountedeither with the center of massabove, coincident with, or below thepivot point. This changes thedirection that the direction that thegyroscope precesses (or stop it fromprecessing at all).

Details

308Demo #

Wheel is slightly out of balance.Suggestions forImprovement

Related Demos

References

Other Uses


YesChecked

GYROSCOPE BICYCLE WHEEL

1Q50.20DCS #

1 MechanicsArea


Topic

1Q50 GyrosConcept

gyroscope, gyro, wheel, bicycle, top, rotational, stability,precession, conservation, momentum, inertia, kinetic,

Keywords

ActiveStatus

Hanging nearcenter pillar

Location


Rating

This Gyro is large enough forstudents to see. Start wheelspinning and place a ball at one endof a bike wheel axle into a socket ofthe big lab stand.

BriefDescription

Stand with a long metal rod; Big gyro wheel.EquipmentNeeded

Wheel 345 works best on the stand.Wheel 346 does not have aspherical end and as such is bettersuited for hanging or otherdemonstrations. Wheel 344 hasrough bearing/hub and vibrateswhen turning.

Details

344, 345, 346Demo #


Related Demos

American Journal of Physics (AJP 30(7),528).References

Other Uses


YesChecked

Vector Nature of Angular Momentum

DCS #

1 MechanicsArea


Topic

1Q50 GyrosConcept

angular momentum, momentum, vectorKeywords

ActiveStatus

12Location

��Rating

The dremel tool displays howangular momentum is a vector.

BriefDescription

EquipmentNeeded

When the dremmel is OFF you canpull on a string at one end of thedremmel and you will see one endlift up. When the dremmel isTURNED ON and one string ispulled up, the dremmel’s spinningmotor will cause the device to fliparound.

Details

101Demo #


Related Demos

References

Other Uses


YesChecked

RING SHOOTERS (Mechanics)

1Q?.?DCS #

1 MechanicsArea


Topic

variousConcept

ring shooter, launcher, angular momentum, rotationaldynamics,

Keywords

ActiveStatus

20Location


Rating

These launchers fitted with soft anddurable rings demonstrate angularmomentum.

BriefDescription

Vortex Tornado Launchers, Vortex Tornado Spin Fire RingsEquipmentNeeded

Make sure the thick edge of the ringfaces forward during flight.

CAUTION: Do not fire at people.Never load any object other than theprovided rings.

Details

049Demo #


Related Demos

References

Other Uses


YesChecked

ELEMENTS

DCS #

1 MechanicsArea

1R Properties ofMatter

Topic

Concept

elements, periodic table, matter, properties,Keywords

ActiveStatus

100 cabinetLocation

�� staticRating

Use this set to demonstrate differentelements and their properties.

BriefDescription

Set of different elements.EquipmentNeeded

Details

351Demo #

Many elements are not labeled or labels have fallen off.Suggestions forImprovement

Related Demos

References

Other Uses


YesChecked

ALUMINUM HONEYCOMB

1R20.?DCS #

1 MechanicsArea


Topic

1R20 Tensile andCompressiveStress

Concept

aluminum honeycomb, tensile, compressive, stress, force,pressure, crystal, structure, lattice,

Keywords

ActiveStatus

21Location


Rating

BriefDescription

EquipmentNeeded

Details

037Demo #


Related Demos

References

Other Uses


YesChecked

Matter Model

DCS #

1 MechanicsArea


Topic

1R20 Tensile andCompressiveStress

Concept

mattter, atoms, space, compress, crystal, structureKeywords

ActiveStatus

21Location

��Rating

BriefDescription

EquipmentNeeded

Details

145Demo #


Related Demos

References

Other Uses


YesChecked

HAPPY / SAD BALLS

1R40.30DCS #

1 MechanicsArea


Topic

1R40 Coefficient ofRestitution

Concept

coefficient of restitution, ball, bounce, collision, rubber,elastic, rebound, bouncing, friction, hysteresis, Norsorex,choositz, decision

Keywords

ActiveStatus

27Location


Rating

Two seemingly identical blackspheres. They have the samedensity, mass, color andappearance; when dropped to thefloor, however, one jumps wildly andthe other is motionless.

BriefDescription

Pair of black spheres - one is formed from a proprietaryrubber compound (“sad ball”), the other one is made ofconventional neoprene rubber (“happy ball”).

EquipmentNeeded

Fact sheet on physical and chemicalproperties , plus experiments forclassroom use included.

Details

046Demo #


Related Demos


Other Uses


YesChecked

COEFFICIENT OF RESTITUTION

1R40.10DCS #

1 MechanicsArea


Topic

1R40 Coefficient ofRestitution

Concept

coefficient of restitution, ball, bounce, collision, steel, elastic,rebound, bouncing,

Keywords

ActiveStatus

20Location


Rating

Drop steel ball on a steel plate(concave side) and ball will bouncefor an extremely long time beforestopping.

Drop the same ball on the foam andit will not even bounce.

BriefDescription

Steel ball with a slightly concave steel plate, foam pad.EquipmentNeeded

Details

039Demo #


Related Demos

References

Other Uses


YesChecked

BALL SET

DCS #

1 MechanicsArea

variousTopic

variousConcept

balls, angular momentum, coefficient of restitution,collisions, energy, conservation,

Keywords

ActiveStatus

14Location


Rating

These balls can be used for avariety of different demonstrations:coefficient of restitution, angularmomentum (football spiral),collisions (bounce a tennis ball ontop of a basketball) and so on.

BriefDescription

Different sizes and shapes balls.EquipmentNeeded

missing basket ballDetails

151Demo #


Related Demos

References

Other Uses

9/4/2019DateChecked

YesChecked

BLACKBOARD MECHANICS KIT

1 (mechanics; manycategories)

DCS #

1 MechanicsArea

variousTopic

variousConcept

black, board, chalk, scale, magnetic, mechanics, pulley,Keywords

ActiveStatus

17Location


Rating

A self contained kit, containing manydifferent demos from the area ofmechanics. It is magnetic and willstick to old style blackboards.

BriefDescription

Wooden case labelled “Blackboard Mechanics”EquipmentNeeded

An excellent resource. The kitcontains many different demos fromvarious topics in mechanics. It haslarge face scales (visible in the largelecture halls) to show forces.

The Instruction manual contains alist of equipment and manysuggested demos.

You will need more string!!

Details

085Demo #

System to hold items in lid when closing to prevent themfrom falling out.


Related Demos

References

Other Uses

9/4/2019DateChecked

YesChecked

GLASS COHESION PLATES

2A10.35DCS #

2 Fluid MechanicsArea

2A SurfaceTension

Topic

2A10 Force ofSurface Tension

Concept

glass cohesion plates, surface tension,Keywords

In StorageStatus

StorageLocation


Rating

Plates are moistened with water andpressed together. Then, you candemonstrate the high forces ofcohesion as you try to pry the platesapart.

BriefDescription

Set of two flat-surface glass plates with handles.EquipmentNeeded

Details

322Demo #


Related Demos

Sutton (M-259); Central Scientific Company(CENCO’99,113).

References

Other Uses


NoChecked

Electrostatic Water Funnel

2A10.84DCS #


2A SurfaceTension

Topic


Concept

Keywords

ActiveStatus

13Location

��Rating

A blue funnel and a small clear tubeconnect to show how fluid behavesas a small stream.

BriefDescription

Funnel apparatus; waterEquipmentNeeded

Details

335Demo #

Demo itself works fine, but demo instructions should beexpanded.


Related Demos

References

Other Uses


YesChecked

Floating Paperclip

2A10.20DCS #


2A SurfaceTension

Topic


Concept

Surface tension, soap film, paperclip, float, sinkKeywords

ActiveStatus

17Location


Rating

A paperclip can float on top of water,but will sink when soap lowers thesurface tension.

BriefDescription

Paperclips (included), beaker of water, dish soap, toothpickor similar

EquipmentNeeded

Once the paperclip is floating, atoothpick or similar object can beused to dip a small amount of soapinto the beaker.

To make the paperclips easier tofloat, bend one end of the paperclipperpendicular to the plane of thepaperclip to act as a handle (aspictured). This makes it mucheasier to gently place the clip on topof the water.

If trying to float paperclip afterapplying the soap, make sure toclean the beaker well and wipe thepaperclip clean of soap residue.

Details

400Demo #

Include toothpicksSuggestions forImprovement

Related Demos

References

Other Uses


YesChecked

PUMPED UP PLASTIC BOTTLES

2B30.? / 4B70.20DCS #


2B Statics of FluidsTopic

2B20 StaticPressure

Concept

plastic bottles, atmospheric pressure, packing peanuts,pump, compression, gas law, fog, cloud, temperature,adiabatic, vapor,

Keywords

ActiveStatus

28Location

$$$$$ good andengaging

Rating

You can see how different pressureinside the bottles can changepacking peanuts size, insidetemperature and makes a fog.

4B70.20 = Expansion CloudChamber

BriefDescription

3 L-bottle with packing peanuts,EquipmentNeeded

Don’t pump more than 30 psi (whitescale in a pressure gage) - maycause explosion and personal injury.

Also within the box is a hoseattachment that can be installedinstead of the air valve. Put yourthumb over the end of the tube andpressurize the bottle. Release yourthumb and the “Cloud Chamber”effect is increased.

Details

117Demo #


Related Demos

References

Other Uses


YesChecked

PASCAL’S VASES

2B20.40DCS #



2B20 StaticPressure

Concept

Pascal, tubes, vases, pressure, fluid height,Keywords

ActiveStatus

12Location


Rating

This apparatus shows that whenwide connected tubes are filled withliquid, the liquid rises to the samelevel in all.

BriefDescription

Four differently shaped tubes are securely sealed to amanifold, all on support base. Colored water

EquipmentNeeded

Food coloring is included in this box.Details

100Demo #


Related Demos

Sargent-Welch 2001-2002, 694 (CENCO);References

Other Uses


YesChecked

HOVERCRAFT

2B20.80DCS #



2B20 StaticPressure

Concept

hovercraft, friction, fluids, pressure, forcesKeywords

Active (need toinstall batteries)

Status

13Location


Rating

1. Good for large classes2. Decent pressure demonstration3. Turning the switch on (located ontop, front-left side) is the only set uptask4. Good with multiple pressuredemos, since it is a quick demo

BriefDescription

need to install batteriesEquipmentNeeded

1. There isn’t much to it - its a smallblower powered toy that showspressure concepts2. It uses 4 AA batteries**Needs a smooth clean surface-demo table works, floor may not.

Details

106Demo #


Related Demos

References

Other Uses


YesChecked

SQUIRT GUNS

2B20.68DCS #



2B20 StaticPressure

Concept

squirt gun, ink, pressure, Pascal, hydraulic, force, area,velocity, speed, flow, fluid, (Dont use the “Splat Master”stuff)

Keywords

ActiveStatus

13Location


Rating

Compare the area/velocity of thetrigger handles to that of the exithole.

BriefDescription

EquipmentNeeded

Details

108Demo #


Related Demos

References

Other Uses


YesChecked

MAGDEBURG PRESSURE PISTON

2B30.31DCS #



2B30 AtmosphericPressure

Concept

pressure piston, atmospheric pressure, force, vacuum,Magdeburg hemispheres, pump,

Keywords

ActiveStatus

12Location


Rating

Evacuate the piston, shut the valveand try to pull it apart.

BriefDescription

Two parts pressure piston with valve. Vacuum pump.EquipmentNeeded

You can use vacuum pump toevacuate this piston.

Details

103Demo #


110,102,326Related Demos

PIRA 200; American Journal of Physics (AJP 36(3), ix); ThePhysics Teacher (TPT 3(6),285); Freier & Anderson (Fd-2);Hilton (M-22b.3).

References

Other Uses


YesChecked

MAGDEBURG FLAT PLATES

2B30.33DCS #




Concept

flat pressure plates, atmospheric pressure, force, vacuum,Magdeburg hemispheres, pump,

Keywords

ActiveStatus

13Location


Rating

Join the hemispheres, hook them upto a vacuum pump, and evacuatethem. It will be impossible to pullthem apart. Open the stopcock to letair in, and the hemispheres separateeasily.

BriefDescription

Two sets of hemispheres - clear 9” Plexiglas and 5” metalones, with “O” ring in between; Vacuum Pump.

EquipmentNeeded

*** The clear plates have beeenmissing since before fall 2010.***

Details

110Demo #



Central Scientific Company (CENCO’99,122).References

Other Uses


YesChecked

MAGDEBURG PRESSURE JAR

2B30.32DCS #




Concept

Magdeburg, hemisphere, atmospheric, pressure, force,vacuum, fluid, pump,

Keywords

ActiveStatus

12Location


Rating

-Set up is limited to how long it takesto pump the air out of the jar.-Can be interactive. Uses 2 peopleto try to pull the jar open with ropes-Very good demonstration of howstrong air pressure really is.

BriefDescription

Pressure Jar and Pump (both included)EquipmentNeeded

This is class interactive experiment.A small hand pump is used to pullthe air out of a jar that has asealable top. The jar cannot beopened with out tremendous force atthis point. There are ropes attachedto the two halves of the jar for use intrying to open the jar when it’sevacuated. Make sure to pressdown hard enough on the valvewhen evacuating cylinder to make agood seal.

Details

102Demo #



References

Other Uses


YesChecked

VACUUM CANNON

2B30.70DCS #




Concept

ping pong, cannon, vacuum bazooka, atmospheric,pressure, vacuum, force, momentum,

Keywords

ActiveStatus

29 & rack overshelf 70

Location


Rating

Uses a PVC pipe and atmosphericpressure to launch a ping pong ballat several hundred miles per hour.

BriefDescription

Vacuum PumpEquipmentNeeded

This should be done where there islittle risk of injury to students as theeffect is quite violent. When firedfrom a distance of about 10 metersinto a classroom wall the ping pongball is completely crushed.

Details

122Demo #


Related Demos

References

COMPLETE INSTRUCTIONS ARE IN BOX! (outdated butsufficient)

Other Uses


YesChecked

MAGDEBURG HEMISPHERES

2B30.30DCS #




Concept

Magdeburg, hemisphere, atmospheric, pressure, force,vacuum, pull apart,

Keywords

ActiveStatus

18Location


Rating

Evacuate Magdeburg hemispheresand try to separate them.

BriefDescription

Vacuum pumpEquipmentNeeded

Details

326Demo #

Needs a new gasket.Suggestions forImprovement


References

Other Uses


YesChecked

Pressure Gauge

DCS #



2B35 MeasuringPressure

Concept

Pressure, atmosphere, gauge, measure,Keywords

ActiveStatus

14Location


Rating

Giant pressure gauge for classroomDemonstrations

BriefDescription

EquipmentNeeded

Details

118Demo #


Related Demos

References

Other Uses


YesChecked

CARTESIAN DIVER

2B40.30 / 2B20.?DCS #



2B40 Density andBuoyancy

Concept

cartesian diver, pop bottle, plastic, pump cap, Fizz Keeper,ketchup packet, density, buoyancy, sinking, floating,pressure, bubble,

Keywords

ActiveStatus

12Location


Rating

Pictured pump not included. Squeezthe bottle with your hands and the“squid” will sink. No ketchup

2B20.? = Static Pressure (Pascal’sLaw)

BriefDescription

2L bottle with water, two packs of ketchup and lid withpump.

EquipmentNeeded

By squeezing a water-filled plasticsoda bottle, a floating objectbecomes denser and sinks;releasing the pressure causes thediver to become less dense and floatto the surface.

Details

107Demo #


Related Demos

Sutton (M-321), Educational Innovations (EI’01(10),49).References

Other Uses


YesChecked

DENSITY SAMPLES

2B40.?DCS #




Concept

density, sink, float, buoyancy, fluid, samples, cylinder,samples,

Keywords

In StorageStatus

StorageLocation


Rating

Use these two sets of cylinders inyour density experiments to illustratereciprocal density. One set - fivemetal cylinders of equal mass aremade of aluminum, copper, lead, tin,and zinc. The other one - fivecylinders of different materials, butall have the same mass.

BriefDescription

Five metal density cylinder set and five cylinders of differentmaterials set.

EquipmentNeeded

In each set the cross-sectional areasof cylinders are the same, so theirlengths are inversely proportional totheir densities.

Details

315Demo #


Related Demos


Other Uses


NoChecked

DENSITY CYLINDER

2B40.59DCS #




Concept

density cylinder, density, buoyancy, temperature, float, sink,hot, cold, buoy, self right

Keywords

ActiveStatus

13Location


Rating

The density rod shows howtemperature affects density of aLiquid. The hollow cylinder floats incold water and sink in hot water.

Also includes 500ml flask foralternate demo

BriefDescription

Glass beaker; Sealed Hollow Aluminum Cylinder;Thermometer; Cold Tap water, Hot plate and Metal Can withwater.

EquipmentNeeded

Fill beaker with cold tap water. Placethe Density Rod into the beaker andobserve that it floats. Note thetemperature. Add a hot water in tothe beaker (hot water from the metalcan on the hot plate), Density Rodwill sink (this can work with hot tapwater as well)See the Basic Theory page forExplanation of Density Variation withTemperature.To prevent corrosion of thealuminum cylinder, it should bewiped dry after the demonstration.

Details

111Demo #


Related Demos


Alternate: Buoy Demo

Fill included flask to about 1 inch above 500ml marking withcold tap water. Drop into flask with X side down. Thecylinder will right itself.

Other Uses


YesChecked

ARCHIMEDES’ PRINCIPLE APPARATUS

2B40.20DCS #




Concept

Archimedes principle, density, buoyancy, fluids, machinedbucket, cylindrical cavity, plummet,

Keywords

In StorageStatus

StorageLocation


Rating

BriefDescription

EquipmentNeeded

From a scale, suspend the “bucket”and from the “bucket” suspend thesolid cylinder. Note the scalereading before and after loweringthe solid cylinder into a full containerof water. Catch the displaced wateras it overflows and put it into the“bucket.” The weight of this waterwill equal the buoyant force andreturn the scale reading to its valuebefore the solid cylinder waslowered into the water.

Details

323Demo #


Related Demos

References

Other Uses


NoChecked

WEIGHT OF AIR

2B40.45DCS #




Concept

density, buoyancy, weight of air, vacuum, bell jar, balance,hollow sphere, scale,

Keywords

ActiveStatus

13Location


Rating

Weight of sphere (with air in it) is thesame as the solid mass, so theybalance. Put entire unit in a vacuumand the weight is now heavier thanthe sphere (without air in it).

BriefDescription

vacuum pump, bell jarEquipmentNeeded

Use with Nalgene bell jars (Demo121 Shelf 14) because the glass belljars are not large enough.

Details

104Demo #


121Related Demos

References

Other Uses


YesChecked

Hot Air Balloon Demo

DCS #




Concept

fluid dynamics, heat, hair dryer, hot air balloon, buoyant,buoyant force, thermodynamics, density, air

Keywords

ActiveStatus

19Location


Rating

Blow hot air from the hair dryer intothe balloon.Allow the hot air balloonheat up from the hair dryer for45sec. Let go of the balloon andwatch it raise to the ceiling.Demonstrates the lower density ofhot air and the buoyant force that isapplied to the balloon.

BriefDescription

Hair dryer (in box)EquipmentNeeded

Details

073Demo #


Related Demos

References

Other Uses


YesChecked

Lead Balloon

DCS #




Concept

density, buoyancy, fuild, air, balloon, tetrafluoroethane, keyboard duster

Keywords

ActiveStatus

18Location


Rating

A balloon filled with keyboard duster(tetrafluoroethane) is much heavierthan one filled with air and as such,they fall at different rates.

BriefDescription

key board duster, mylar balloons, bike pump or straw to fillballoon

EquipmentNeeded

Fill one balloon with the air from akeyboard duster (tetrafluoroethane)and one balloon with room air. Theair from the keyboard duster is muchmore dense than room air and whenit is in a balloon this difference indensity can be felt. You can also seea significant difference when the twoballoons are dropped.

Regular air balloon can be blown upwith the pump from demo 116, shelf30 (Floating Ball) if desired.

Details

105Demo #


Related Demos

References

Other Uses


YesChecked

Bottled Mercury

DCS #




Concept

mercury, density, metal, elementKeywords

ActiveStatus

100 SecureCabinet

Location

��Rating

(1) 5 pound bottle of Mercury isavailable for density demos.Glassware is available in the demoroom for use as a vessel for holdingmercury on the supply shelf andabove the sink

BriefDescription

EquipmentNeeded

Details

364Demo #


Related Demos

References

Other Uses


YesChecked

BELL JAR DEMO KIT

DCS #



variousConcept

bell jar, vacuum, sound, pressure, Styrofoam, shavingcream

Keywords

ActiveStatus

14Location


Rating

A kit that contains many of thepopluar demos associated with belljars. Includes two nalgene bell jars,one base, all connecting fittings andhoses, styrofoam peanuts, shavingcream (with container to put it in),and a personal alarm. The kit alsohas an instruction sheet withsuggestions.

BriefDescription

Vacuum pump (use the one on the red cart. Bottom onedoesn’t work)Note: the kit uses gaskets to seal. DO NOTuse grease to seal the bell jar)

EquipmentNeeded

It is recommended that you look atthe printed instruction sheet beforeuse--it has good experiments andways to avoid creating a mess.

One of the bell jars has a hookepoxied into it so you can hangdemos.

The hose fitting to connect the belljar to the vacuum pump has a quickconnect and a shutoff valve so thatyou can evacuate the bell jar in thedemo room and take it to classwithout the pump.

Details

121Demo #


104Related Demos

References

Another good demo for use with the bell jars (though notincluded in the kit) is the “Weight of Air Balance” (Demo 104Shelf 13) and a good one to ask the class for predictionsbefore doing the demo (a good way to demonstrateArchimedes’ Principle applies to all fluids including air).

Other Uses


YesChecked

Wind Bag

DCS #


2C Dynamics ofFluids

Topic

Concept

wind, bag, windbag, Bernoulli, inflateKeywords

ActiveStatus

9Location

��Rating

Long bag that demonstratesbernoulli effect.

BriefDescription

EquipmentNeeded

Details

112Demo #


Related Demos

References

Other Uses


YesChecked

VELOCITY OF EFFLUX

2C10.10DCS #



Topic

2C10 Flow RateConcept

3, three, hole, tube, flow rate, fluids, pressure, depth, height,Mariotte’s bottle, Toricelli's tank, efflux, velocity,

Keywords

ActiveStatus

16Location


Rating

Fill this tube with water. The waterwill flow in 3 different paths from its3 evenly spaced 3 mm holes.

BriefDescription

Clear plastic tube with three holes; water and container forwater flowing from the holes.

There is a Submersible Water Pump located on shelf 15.The setup is as pictured.

EquipmentNeeded

Plugging all holes while filling thetube requires 3 hands or some sortof closure over the holes that can bequickly removed before the waterdrains.

The pump (9020 shelf 15) is notstrong enough to keep all threeholes flowing at the same time. So,plug the two bottom holes to allowthe water fill. Then release (watchout the water from the second holegoes far) and repeat.

Details

115Demo #


9020Related Demos

Central Scientific Company (CENCO’99, 116).References

Other Uses


YesChecked

Air Velocity Manometer

DCS #



Topic

2C10 Flow RateConcept

air, velocity, manometer, fluid, dynamics, measurmentKeywords

MissingStatus

NALocation


Rating

A manometer for use for measuringair velocity.

BriefDescription

n/aEquipmentNeeded

Details

333Demo #


Related Demos

References

See demo room coordinator for keys into storage.Other Uses


NoChecked

FLOATING BALL

2C20.30DCS #



Topic

2C20 BernoulliForce

Concept

floating, flying, ball, Bernoulli, force, air pressure, flow,beach ball, leaf blower, Bernoulli funnel

Keywords

ActiveStatus

Shelf 1Location


Rating

Turn on the air blower, place thebeach ball in the air stream. Changethe angle of the air stream until theball falls. Use a large funnel upsidedown to demo also.

BriefDescription

Air Blower and Beach Ball.

Can use Bernoulli funnel with this demo (located on shelf 1)

EquipmentNeeded

The blower is extremely loud,hearing protection recommended.Seriously very loud!!

Details

116Demo #


Related Demos

Hilton (M-12b); The Physics Teacher (TPT 7,116-117(1969)).

References

Other Uses


YesChecked

LIFTING PLATE

2C20.41DCS #



Topic

2C20 BernoulliForce

Concept

lifting plate, Bernoulli, air pressure, flow, force,Keywords

ActiveStatus

14Location


Rating

Place Plexiglas plate with tube in themiddle on the top of metal disc .Blow into the tube and the platesstick. You can lift both plates at oncewhile blowing an air.

BriefDescription

Plexiglas plate with hole in the middle and with the tubeglued into that hole; Metal plate with pins around it; Blowerwith the hose.

EquipmentNeeded

Place metal plate on table with pinsfacing upwards.

Details

109Demo #


Related Demos

Sutton (M-295); Hilton (M-12c); University of MarylandPhysics Lecture-Demonstration Facility (F5-07).

References

Other Uses


YesChecked

Vortex Generators

2C50.10DCS #



Topic

2C50 VorticesConcept

vortex generator, smoke ring, fog, vortices, angularmomentum, inertia,

Keywords

ActiveStatus

13Location


Rating

Take one can with a round hole inthe bottom. Use a fogger to fill canwith a smoke. Hold the can so thehole is toward the class and tap theplastic cover. A smoke ring aboutthe size of the hole will travel acrossthe room.

BriefDescription

A can with plastic cover and the hole in the bottom; Foggershelf 11; Fog Liquid.

EquipmentNeeded

DO NOT make too much fog, firealarm can react on this fog.

Details

113Demo #


084Related Demos

PIRA 200.References

Other Uses


YesChecked

FLAME TORNADO

2C50.35DCS #



Topic

2C50 VorticesConcept

flame tornado, vortex, vortices, angular momentum, fire,Keywords

MissingStatus

Location


Rating

Put a small amount of alcohol on thecloth inside the cage, use thematches to burn it. Turn the switchon and start cage rotation, you willsee the Flame Tornado.

BriefDescription

Rotating cage with the cloth on the platform at the bottom ofthe cage, mounted in to metal frame with the base. Alcohol.

EquipmentNeeded

Movement of the cage is operatedby the switch on the base of thesystem.DO NOT put too much of thealcohol, you can get too big fire.

Details

354Demo #


Related Demos

References

Other Uses


NoChecked

DIFFERENT MASS PENDULA

3A10.17DCS #

3 Oscillations andWaves

Area

3A OscillationsTopic

3A10 PendulaConcept

different mass pendula, heavy, light, length, mass, period,Keywords

In StorageStatus

StorageLocation


Rating

Two balls with the same diameterbut different mass - blue ball isheavier than green one. If theseballs have the same string lengththey swing with the same period.So, equal length pendulum ofdifferent masses oscillate together.

BriefDescription

Two rubber balls with different mass; Metal stand; Twopieces of string with the same length.

EquipmentNeeded

**MISSING ONE OF THE RUBBERBALLS**

Details

276Demo #


Related Demos

PIRA1000, Sutton (M-81).References

Other Uses


NoChecked

PHYSICAL PENDULUM OR INERTIA BALANCE

3A15.10DCS #


Area


3A15 PhysicalPendula

Concept

inertia balance, physical pendulum, oscillations, Newton,first law,

Keywords

ActiveStatus

17Location


Rating

The balance consists of a horizontalmetal bar supported from a heavystand by two spring-steel strips.Place different masses on thatbalance and watch their vibrations ina horizontal plane. The period will bedifferent for the different masses.

BriefDescription

Inertia Balance; Set of blocks with different weight; Labstand.

EquipmentNeeded

Best viewed from above.Details

123Demo #


Related Demos

Sutton (M-106).References

Can also be classified as 1F10.10 inertia balanceOther Uses

9/9/2019DateChecked

YesChecked

Masses and Springs

3A20.10DCS #


Area


3A20 Springs andOscillators

Concept

Harmonic motion, mass, spring, force, oscillation, waves,period

Keywords

ActiveStatus

45Location

��Rating

Observe the difference in oscillationfrequency when different massesare hung from spring.

BriefDescription

Clamp stand to hold spring.EquipmentNeeded

Details

259Demo #


Related Demos

References

Other Uses


YesChecked

UPSIDE-DOWN PENDULUM

3A60.60DCS #


Area


3A60 DrivenMechanicalResonance

Concept

upside-down pendulum, upside, down, upsidedown, driven,resonance, vertical, stability, balance,

Keywords

ActiveStatus

52Location


Rating

A variable speed motor providesvertical motion for a vertical rod. Theinertia of the rod allows it to stayvertical.

BriefDescription

Upside-down pendulum with speed rotator.EquipmentNeeded

Details

298Demo #


Related Demos

Freier & Anderson (Mz-9), PIRA 1000References

Other Uses


YesChecked

DRIVEN PHASE RELATIONSHIPS

3A60.?DCS #


Area



Concept

driven phase relationships, damped, oscillators, forcedvibrations, harmonic motion, resonance, torsional pendulum,

Keywords

ActiveStatus

48Location


Rating

This device is used to show howamplitude and phase of anoscillatory system vary withfrequency and amplitude of a driver,and with damping.

BriefDescription

Torsional Pendulum; Experimental motor (110 volts, AC andDC); Speed regulator; Manual; Lab stand with clamps, DCpower supply.

EquipmentNeeded

The large wheel with the pointer isdriven by the variable speed motor.The speed of the motor may beadjusted using the potentiometer onthe power supply. As you vary thespeed of the motor, the amplitudeand phase of the oscillation may beclearly viewed. You may also adddamping by passing a currentthrough the coils on the base of thedevice using an external powersupply; this eddy current damping isproportional to speed.The manual provides more details,you can find it in the box with thisdevice.

Details

278Demo #


Related Demos

American 3B Scientific (3B’01,31).References

Can be helpful to use a newer DC supply to monitor currentin electromagnet.

Other Uses


YesChecked

Driver Motor with Clutch

DCS #


Area



Concept

large motor, driver, ACKeywords

ActiveStatus

46Location

��Rating

Driver motor for variousBriefDescription

EquipmentNeeded

Driver motor operates at a fixedspeed, but the silver knob on thefront of the motor controls the clutch,allowing the motor to spin with lowerspeed and torque at the output.

Details

305Demo #

Which specific demos would this be used for?Suggestions forImprovement

Related Demos

References

Other Uses


YesChecked

WILBERFORCE PENDULUM

3A70.10DCS #


Area


3A70 CoupledOscillations

Concept

Wilberforce pendulum, coupled oscillations, angularmomentum, inertia, rotation, transfer of energy, frequency,resonance,

Keywords

ActiveStatus

48Location


Rating

The mass hanging from the springdemonstrate a coupled oscillatorsystem. The spring and the massare designed so energy andoscillatory motion are transferredback and forth between the up anddown oscillation of the spring, andthe rotational motion of the mass.

BriefDescription

Wilberforce Pendulum - heavy bob with small adjustableweights, hanging vertically on a spring; 6’ height stand withclamps.

EquipmentNeeded

The adjustable weights on the bobare used to tune its moment ofinertia. The spring has stronglycoupled oscillation modes: atranslational mode - up and down,and a rotational mode. At resonancethe two modes alternate, giving onepoint of pure translation and onepoint of pure rotation.Lock pendulum holder in a clampVERTICALLY ONLY to support thespring without damaging it.

Details

275Demo #

Changed the spring and you can see the affect better.Cannot be tuned correctly as is. Correct tuning requires thetranslational and torsional frequencies be very close. Theperiod of vertical oscillation is ~2 seconds while the torsionalperiod is on the order of ~4 seconds. No adjustment ofweights can tune the torsional period close enough to thevertical period to produce this behavior.


Related Demos

Central Scientific Company (CENCO’99,99); PIRA 200;Sutton (S-18).

References

Other Uses


YesChecked

Coupled Pendula

DCS #


Area


3A70 CoupledOscillations

Concept

Oscillations, Coupled, chaotic, spring, massKeywords

ActiveStatus

35Location


Rating

There are 3 pendula on this device(left to Right)1: Chaotic pendulum2: Coupled pendulum with spring3: coupled pendulum M1>>M2

BriefDescription

EquipmentNeeded

1: Start the pendulum pointing upand watch the movement

2: Keep one stationary and pull oneabout 2 inches to the side. Thenrelease both There are three types of motion: 1. Side to side (same direction) 2. Side to side (opposite direction) 3. Start one in motion and it willtransfer all motion to the other andstop momentarily. Then the processstarts over with the other pendulum(~10 seconds to arrive back to initialconditions)

3: Hold the bottom weight in placeand offset the top weight. Thenrelease both

Details

411Demo #


Related Demos

References

Other Uses


YesChecked

Ripple Tank

DCS #


Area

3B Wave MotionTopic

Concept

waves, Oscillations, ripple, tank, ripple tank, strobe, water,wave gemerator, interference, wave motion, diffraction,motion

Keywords

ActiveStatus

42Location

��Rating

The ripple tank consists of a shallowtray of water with a overhead lightsource to illuminate the ripples in thewater.The light source can bestrobed so that the wave are madeto look as if they are stationary.

BriefDescription

Box of accessoriesFrameLight and mountMirror and screens

EquipmentNeeded

1) Demonstrate parallel wave frontsand their reflection on a variety ofdifferent shaped surfaces.2) Demonstrate the refraction ofwaves when the parallel wave frontschange wave speed when the waterdepth is changed.3) Demonstrate parallel wave frontsas they defraction around a barier.Demonstrate the interference of thewave produced by two pointsources.

Time consuming setup andtakedown. Needs at least 3electrical outlets.

Details

241Demo #

Plane wave generator arm is brokenSuggestions forImprovement

Related Demos

References

Other Uses


YesChecked

WAVES ON A ROPE

3B10.10DCS #


Area

3B Wave MotionTopic

3B10 TransversePulses and Waves

Concept

pulse on a rope, transverse wave, wave motion, pulse,dispersion

Keywords

ActiveStatus

48Location


Rating

Hold this rope from both sides anddemonstrate transverse wavemotion.

BriefDescription

Rope.EquipmentNeeded

Details

272Demo #


274Related Demos

References

Other Uses


YesChecked

WAVES ON A RUBBER CORD

3B10.10DCS #


Area

3B Wave MotionTopic


Concept

rubber cord, transverse wave, wave motion, pulse,Keywords

ActiveStatus

48Location


Rating

You can demonstrate transversemotion with this robber cord.3B25.? = Impedance and Dispersion

BriefDescription

Robber Cord.EquipmentNeeded

Details

274Demo #


272Related Demos

Sargent-Welch 2001-2002 (CENCO), 728.References

Other Uses


YesChecked

TRAVELING WAVE APPARATUS

3B10.55DCS #


Area

3B Wave MotionTopic


Concept

travelling wave apparatus, rotate, wave motion, torsion,Keywords

ActiveStatus

48Location


Rating

Use overhead camera with thisapparatus to show traveling waves.

BriefDescription

Traveling Wave Apparatus; Overhead Camera.EquipmentNeeded

Slowly turning the crank simulates atraveling wave when viewed fromdirectly overhead.

Turn slowly and steadily for bestresults.

Details

277Demo #

Crank handle size makes it difficult to turn handle withoutbumping into projector and jarring the spring. Mount onacrylic blocks to improve handle clearance?


Related Demos

References

Other Uses


YesChecked

TRANSVERSE WAVE MACHINE

3B10.51DCS #


Area

3B Wave MotionTopic


Concept

waves machine, wave motion, transverse, travel, rods,vertical,

Keywords

ActiveStatus

49Location


Rating

A number of small balls are fixed tothe end of a set of rods that canslide up and down. Rotate a handleon the side of the black box anddemonstrate the motions of waves.

BriefDescription

EquipmentNeeded

Details

286Demo #

Good concept but could be better machined: pattern is notperfectly sinusoidal.


Related Demos

References

Other Uses


YesChecked

Torsion Wave Generator

3B10.10DCS #


Area

3B Wave MotionTopic


Concept

Oscillations and Waves, waves, Oscillations, transversewave, wavelength, velocity, frequency, interference,standing waves

Keywords

ActiveStatus

44Location


Rating

PASCO Transverse WaveDemonstrator consist of a set of rodattached to a torsional wire. Whenthe end rod is moved transversly thedisturbance is transmitted down thedemonstrator.

BriefDescription

EquipmentNeeded

You can demonstrate: (1) wavepropagation; (2) velocity in differentmedia by two sections whoseoscillators have different mass; (3)wavelength versus velocity andfrequency; (4) reflection at fixed andfree boundaries (by clamping theend if desired); (5) constructive anddestructive interference; (6) standingwaves and resonance (a mechanicaloscillator for fixed knownfrequencies is available if desired);(7) reflection and transmission atmedia boundaries.

Details

246Demo #

One of the rods on the largest demonstrator is loosenedfrom the torsion rod.


Related Demos

References

Other Uses


YesChecked

WAVE DRIVER AND RESONANCE KIT

3B22.11 / 3D40.?DCS #


Area

3B Wave MotionTopic

3B22 StandingWaves

Concept

standing waves, vibrating string, vibrator, wave motion,Melde’s, frequency, wavelength, tension, modes, length,metal bars, strips, wire hoop, loop, ring, Chladni plate,instruments, resonance demonstration, demo

Keywords

ActiveStatus

50Location


Rating

Demonstrate various types ofresonance using a frequencygenerator and a physical oscillator.

BriefDescription

ALL IN BOXEquipmentNeeded

Be sure to lock the oscillator whenchanging attachments and unlockduring operation to prevent damageto the diaphragms.

Attach a string to the top of vibratorand then use mass and a pulley toput tension on the string createstanding waves of variousfrequencies by adjusting Generator-amplifier.Keep the frequency fixed andchange the tension of the string toshow that the wavelength is differentand speed is changed.Also includes Chladni plates

Details

310Demo #


Related Demos

Sutton (S-35); University of Maryland Physics lecture-Demonstration Facility (G3-51; G3-52).

References

Other Uses


YesChecked

STANDING WAVES

3B22.11DCS #


Area

3B Wave MotionTopic

3B22 StandingWaves

Concept

standing waves, vibrating string, vibrator, wave motion,Melde’s, frequency, wavelength, tension, modes,

Keywords

In StorageStatus

StorageLocation


Rating

Speed rotator makes the metal rodattached to the plank with hingemove vertically and demonstratestanding waves in the string, whichattached to the rod. You candemonstrate standing waves withdifferent wavelength by changing thespeed of rotations or tension of thestring.

BriefDescription

Metal frame with the vertically moving rod; Variable SpeedRotator; String; Pulley on a Lab stand; Set of Weights.

EquipmentNeeded

Use big C-clamps to keep Framewith rod and Speed vibrator in astable position - vibration from allrotations can make the wholesystem move.

Details

320Demo #


Related Demos

Sutton (S-35); University of Maryland Physics lecture-Demonstration Facility (G3-51; G3-52).

References

Other Uses


NoChecked

SPACEPHONE

3B25.55DCS #


Area

3B Wave MotionTopic

3B25 Impedanceand Dispersion

Concept

spacephone, space phone, impedance, echo, distortion,reflection, wave motion, sound, transmit,

Keywords

ActiveStatus

48Location

�� good butnot for lecture

Rating

If one person will say something into one end of the Space Phone, theother one can receive the messagewhile listening on the other side ofthis apparatus. A long helical coil offine wire transmits sound slowly.Speak into a sound box on one endand somewhat distorted soundemerges.

BriefDescription

Space PhoneEquipmentNeeded

Must be taut to transmit sound.Details

279Demo #


Related Demos

References

Also a good spring for a physical waves demonstration, butbe gentle.

Other Uses


YesChecked

DOPPLER BUZZER

3B40.10DCS #


Area

3B Wave MotionTopic

3B40 DopplerEffect

Concept

doppler effect, buzzer, wave motionKeywords

ActiveStatus

49Location


Rating

1. Swing a battery powered buzzer,in a net bag attached to a light-weight rope, above your head in ahorizontal circle.2. Students in the room will hear theDoppler Effect on the buzzer’ssound as it continuously movestoward and away from them.

BriefDescription

In the Box:1. Piezo circular Buzzer (battery powered),attached to a Battery Pack w/ an “ON-OFF”Switch2 4 AA Batteries (1.5V each, included & installedin the battery pack)3. Laundry/Lingerie Net Bag, attached to aapproximately 4-foot long, lightweight rope withplastic handle

EquipmentNeeded

1. The “ON-OFF” switch on thebattery pack has been highlighted inFluorescent Orange Ink, so it can beseen well through the white net bag.2. The Buzzer can be easily turnedON & OFF while it remains in thewhite net bag.3. Use the Clear Plastic Handle onthe Rope to adjust the radius of thehorizontal circle above your head byallowing the rope to slide throughthe Handle until the desired radius isachieved.CAUTION: Carefully estimate yourradius, so as not to smash theDoppler Buzzer into a wall,blackboard, demo table, smart-roomcontrol table, student, etc.

Details

283Demo #


399 (not asgood)

Related Demos

References

Other Uses


YesChecked

Doppler Buzzer

DCS #


Area

3B Wave MotionTopic

3B40 DopplerEffect

Concept

Doppler effect, buzzer, pitch change,Keywords

ActiveStatus

49Location

��Rating

Frequency from buzzer seems tochange as it is swung around.

BriefDescription

12V DC Power Supply.EquipmentNeeded

Redundant with Doppler Buzzerdemo 283. This one requires asignal source instead of having thesource included.

Details

399Demo #

Redundant with Doppler Buzzer demo 283. Swingingbuzzers around by their wires is not very robust and likelybad for the electronics.


Related Demos

References

Other Uses


YesChecked

GRIFFIN RIPPLE TANK

3B50.? / 9C35.10DCS #


Area

3B Wave MotionTopic

3B50 Interferenceand Diffraction

Concept

ripple tank, waves, interference, wave motion, diffraction,Keywords

Needs RepairStatus

50Location


Rating

BriefDescription

Griffin Ripple Tank, 12VAC Voltage Power Supply, RippleTank Accessory.

EquipmentNeeded

The ripple tank is on 50 - the othercomponents are on 42

Details

290Demo #

Does not turn on. Lacks clear instructions. Redundant withother ripple tank.


Related Demos

References

Other Uses


YesChecked

PHASE INTERFERENCE SPEAKERS

DCS #


Area

3B Wave MotionTopic

3B50 Interferenceand Diffraction

Concept

sound, interference, speaker, speakers, amplifierKeywords

ActiveStatus

52Location

��Rating

Demonstrate phase interference.Set up and demonstrationinstructions are with this demo

BriefDescription

P.A. amplifier (shelf 61)4 Banana wiressound device (radio, iPod, laptop)

EquipmentNeeded

Details

295Demo #

Speaker #2 of 2 buzzes badly and obscures the effects.Suggestions forImprovement

291 299 285281 271 295

Related Demos

References

Other Uses


YesChecked

TWO SPEAKER INTERFERENCE

3B55.10DCS #


Area

3B Wave MotionTopic

3B55 Interferenceand Diffraction ofSound

Concept

speaker bar, diffraction, interference, sound, speaker, bar,frequency generator, wave motion,

Keywords

ActiveStatus

49Location


Rating

Speakers in phase are mounted atthe ends of a rotatable bar.

BriefDescription

Signal generator, clamp standEquipmentNeeded

Observe how the speakers canseem to go out of phase as the barrotates. This behavior changes fordifferent frequencies.

Effect heard best with highfrequency

Details

281Demo #

Not good for large lecture halls.Suggestions forImprovement

291 299 285281 271 295

Related Demos

References

Other Uses


YesChecked

Passive Amplifier

DCS #


Area

3B Wave MotionTopic


Concept

oscillate, oscillation, waves, wave, interference, sound,tuning fork

Keywords

ActiveStatus

48Location


Rating

A tuning fork doesn’t make muchsound because the two tinesoscillate opposite each other; thesoud waves from the two sidedestructively interfere. Theinterference can be reduced byplacing a recently struck tuning forknear the hole in the box lid.

BriefDescription

Tuning forks (Demo 183 shelf 49)EquipmentNeeded

Also note that the for the lowerpitched tuning forks, thefundamental frequency is amplifiedand can be clearly heard louder thanthe overtones.

Please return tuning forks to demo183 after use.

The box is thedemo, there isnothing includedinside the box.

Details

273Demo #


183Related Demos

References

Other Uses


YesChecked

Point Source Sound Interference

DCS #


Area

3B Wave MotionTopic


Concept

sound, interference, point source, speaker, signal generator,Keywords

ActiveStatus

48Location

��Rating

Two speakers in phase to use forinterference demonstrations.

BriefDescription

EquipmentNeeded

Holding the two white speakers inhand, keep one speaker in a fixedposition and move the other closerand farther away from the fixedspeaker. This movement aligns thewaves produced by each speaker ina peak to peak arrangement or atrough to peak arrangement. Thesound heard will be loud and soft.

Details

271Demo #


291 299 285281 271 295

Related Demos

References

Other Uses


YesChecked

WHITE NOISE INTERFERENCE

DCS #


Area

3B Wave MotionTopic


Concept

Interference, phase, reverse, reversal,Keywords

ActiveStatus

49Location

��Rating

A box used to switch speaker leadsto easily change speaker phase by180 degrees.

BriefDescription

Signal generator, pair of speakers, (amplifier shelf 61 forother sound sources).

EquipmentNeeded

Details

280Demo #


Related Demos

References

Other Uses


YesChecked

SLINKIES AND SPRINGS

3B10.20 / 3B20.11 /3B22.11 / 1G20.45

DCS #


Area

3B Wave MotionTopic

variousConcept

slinky, spring, transverse, longitudinal, standing, waves,wave motion, pulse, compression, propagation,superposition, interference, constructive, destructive,

Keywords

ActiveStatus

56Location


Rating

A long metal slinky and a longer butsmaller metal spring. The slinky canbe used to show compressionwaves and the smaller more sturdyspring can be used to showtransverse waves.1G20.45 = dropped slinky3B22.50 = slinky standing waves3B25.? = Impedance and Dispersion

BriefDescription

a metal post or student volunteer to hold one end of thespring or slinky.

EquipmentNeeded

These are two very long springs(one a slinky) to show wavepropagation on a classroom sizelevel. Please do not use the slinkyfor transverse waves since slinkieshave are very good at destroyingthemselves if handled roughly thisway.SLINKY SPRING can be used forTransverse and Longitudinal Motiondemonstration - clamp the spring tothe lecture table and hold the otherend with some tension. Strike thespring sharply with your hand tosend a traveling pulse; shake theend with various frequencies toillustrate transverse standing waves.Hold slinky in your hand vertically, awave is pulsed and travels thelength of the slinky -compressionalwaves demonstration.Long SPRING WIRE COIL showsProgressive Wave Motion.

Details

9010Demo #


Related Demos

Brown Physics Lecture Demonstrations (3B10.20; 3B20.10);University of Maryland Physics Lecture-Demonstrationfacility ( G3-24; G3-25).

References

Other Uses


YesChecked

TOOTHED WHEELS AND TONE DISCS

3C20.40DCS #


Area

3C AcousticsTopic

3C20 PitchConcept

Savart wheel, toothed, disc, pitch, holes, frequency, music,interval,

Keywords

ActiveStatus

50Location


Rating

Put Tone disc on cordless drill, set itin motion and give a blast of ozonewith Dust Off spray. You can heardifferent musical intervals. If you setin motion toothed wheels, you canproduce different musical intervalsby touching cards to the edges ofthe discs in various combinations.

BriefDescription

Set of toothed wheels and Tone discs, cordless drill, DustOff spray with ozone, card for toothed wheels.

EquipmentNeeded

CAUTION: Always store and useCompressed-Gas Duster in anupright position, never shake canbefore or during use.

Details

288Demo #

Seems a bit dangeroussoun


Related Demos

References

Other Uses


YesChecked

ACOUSTICAL FILTER

3C55.85DCS #


Area

3C AcousticsTopic

3C55 MusicPerception and theVoice

Concept

acoustical filter, perception, acoustics, voice,Keywords

In StorageStatus

StorageLocation


Rating

The word “me” will be changed to“ma” when the inner cylinder is inthe proper position by rotation in theouter cylinder since the highfrequency components are removed.

BriefDescription

EquipmentNeeded

Details

316Demo #


Related Demos

References

Other Uses


NoChecked

AUDITORY DEMONSTRATIONS CD

3C (acoustics, various)DCS #


Area

3C AcousticsTopic

variousConcept

acoustics, audio, hearing, decibel, beats, echoes, sound,perception of sound

Keywords

ActiveStatus

49Location


Rating

A good CD containing audio demosof various auditory phenomena,dealing both with the physics ofsound, and the perception of sound.

BriefDescription

Auditory Demos CD

Some way to play a CD

EquipmentNeeded

The instruction/reference bookincluded in the CD gives not onlysome good explanations of thephysics and theory behind thedemo, but also some history (e.g.when and by whom the phenomenawas discovered)

Details

284Demo #


Related Demos

References

Other Uses


YesChecked

SONOMETERS

3D20.10DCS #


Area

3D InstrumentsTopic

3D20 Resonancein Strings

Concept

sonometer, standing waves, string, resonance, harmonic,diatonic, equal temperament

Keywords

ActiveStatus

51Location


Rating

Use these sonometers todemonstrate standing waves in astretched wire and to demonstrateMersenne’s laws.verical

BriefDescription

SonometersEquipmentNeeded

The tension in stretched wires canbe separately adjusted, creatingdifferent fundamental frequencies.Stops can be inserted along the wireto observe the frequency as afunction of length.

Details

293, 297Demo #


Related Demos

University of Maryland Physics lecture-DemonstrationFacility ( H3-51); Sargent-Welch 2001-2002 (744-745).

References

Other Uses


YesChecked

VERTICAL RESONANCE TUBE

3D30.10DCS #


Area

3D InstrumentsTopic

3D30 ResonanceCavities

Concept

vertical resonance tube, resonance, cavity, tuning fork,tubes, forks

Keywords

Missing PartsStatus

48Location

�� oldRating

Tuning forks demonstrate cavityresonance in correctly tuned tubes.Can either be tuned by actual lengthor length above water.

BriefDescription

Tuning forks; Resonator hammer (demo 183, shelf 49)ANDBeaker with water, plastic tubeORIncluded tubes.

EquipmentNeeded

The plastic tube is in the beaker withwater. Place tuning fork over thetube and activate it by striking it witha resonator hammer. By movingtube up and down you can changethe length of the air column anddemonstrate resonance in a closedtube. 480-500 Hz and 1000 Hz canbe tuned by placing the plastic tubein the glass column and adjustingthe overlap until resonance is found.

Details

304Demo #


183Related Demos

American Journal of Physics (AJP 62, 315-321 (1994));University of Maryland Physics Lecture-DemonstrationFacility (H3-21).

References

Other Uses


YesChecked

SOUND TUBES

3D30.35 / 2C20.?DCS #


Area

3D InstrumentsTopic

3D30 ResonanceCavities

Concept

sound tube, resonance, tube, bloogle, kroogah, Bernoulli, airpressure, whirl,

Keywords

ActiveStatus

50Location


Rating

To produce resonant frequencies ofthe tube and to demonstratestanding wave resonance in an opentube hold this Twirl-A-Tune by oneend, keeping that end free for flow ofair, and swing it around your head.Increasing the speed of the rotationraises the harmonic produced.2C20.? = Bernoulli Forcev

BriefDescription

Sound tube.EquipmentNeeded

Up to seven harmonics can beproduced, illustrating the notes ofthe overtone series. Thefundamental can only be producedby blowing gently into one end.

Details

287Demo #


Related Demos

American Journal of Physics (AJP 62, 224-227 (1994)); ThePhysics Teacher (TPT 32, 42-43 (1994)); University ifMaryland (H3-14).

References

Other Uses


YesChecked

ORGAN PIPES

3D32.10DCS #


Area

3D InstrumentsTopic

3D32 Air ColumnInstruments

Concept

organ pipes, resonance, cavity, air column, instrument,acoustics,

Keywords

ActiveStatus

51Location


Rating

Provide a simple and effectivedemonstration of a resonant cavity.Move the stoppers in the woodenorgan pipe and in the plastic one.This provides a perfect example ofthe relationship between length ofan air column and the frequency ofthe sound produced.sound tube

BriefDescription

EquipmentNeeded

For convenience, the stopperhandle, in the wooden organ pipe, ismarked with the correct settings forplaying notes from middle C to trebleC.To operate the metal organ pipe slipthe mouth piece on the beveled endof the tube and adjust the beveledend from the base of the slit until theorgan pipe responds with a clearsolid tone. For more details se theinstructions for the use of metalorgan pipe.

Details

292Demo #

New ones?Suggestions forImprovement

Related Demos

References

Other Uses


YesChecked

TUNING FORKS AND GONG

3B60.? / 3B70.?DCS #


Area

3D InstrumentsTopic

3D40 Resonancein Plates, Bars,Solids

Concept

tuning fork, gong, beats, coupled resonator, resonance,acoustics,

Keywords

ActiveStatus

50Location


Rating

3B60.? = Beats3B70.? = Coupled Resonators3D46.? = Tuning Forks

BriefDescription

Set of tuning forks, Gong, Resonator hammer

Tuning forks are in a separate box located on shelf:

EquipmentNeeded

Contains “gong” and very largetuning fork. The rest of the smallertuning forks are in Demo 183 onshelf 49

Details

289Demo #


183Related Demos

References

Other Uses


YesChecked

CHLADNI PLATES

3D40.30DCS #


Area

3D InstrumentsTopic


Concept

Chladni plate, resonance, instrument, sand, powder, nodes,antinodes, vibration, wave, pattern,

Keywords

In StorageStatus

StorageLocation

��Rating

Strike or bow a horizontal metalplate covered with sand whiletouching the edge at various nodalpoints.

BriefDescription

EquipmentNeeded

Details

328Demo #


Related Demos

References

Other Uses


NoChecked

Chinese Water Spouting Bowl

3D40.51DCS #


Area

3D InstrumentsTopic


Concept

waves, standing waves, water, water spouting bowl, bowl,resonance, resonant, instrument, wine glass

Keywords

ActiveStatus

43Location

��Rating

These bowls create standing waveswhich produces water to spout up to3 ft. high. Made from a bronze, whenthe handles are rubbed by the palmsof the hand, the bowl begins to humand vibrate, and the water in itspouts up due to the creation ofstanding waves.

BriefDescription

Chinese Water Spouting BowlRubber SheetWater

EquipmentNeeded

The Water Spouting Bowl has 4heavy duty rubber feet glued to thebottom at its nodes.

Fill bowl with at least 2 inches ofwater. Moisten hands and rub onthe handles (it may take a minute tofind the right pressure). Theresonant effect is like a singing wineglass. Filling the bowl almost up tothe handles will create moredramatic splashing and also make abit of a mess; do not do this next toanything that cannot get wet.

Details

243Demo #


Related Demos

References

Used in the early Tao Temples for the purpose of meditationand as a science tool for the study of standing waves.

Other Uses


YesChecked

Singing Rod

3D40.20DCS #


Area

3D InstrumentsTopic


Concept

waves, oscillation, resonance, sound, longitudinal,transverse

Keywords

ActiveStatus

51Location


Rating

Slide your fingers repeatedly alongthis 60-cm-long metal rod, an ear-piercing sound is generated. Youcontrol how loud the sound getsfrom a whisper to a auditorium-fillingshriek.

BriefDescription

Rosin to lightly coat your fingers (in tube)

Instructions included in tube

EquipmentNeeded

Absolutely incredible! This is a greatexperiment to demonstrate thedifference between longitudinal andtransverse waves.The loudest frequencies for each barare approximately:2480 Hz, 3100 Hz, 4140 Hz

Use similar pressure to a signingwine glass, it will take severalstrokes once the rod is vibrating toreach maximum volume. The louderthe rod is singing, the less pressureit takes to maintain the vibration.

Details

294Demo #


Related Demos

References

Other Uses


YesChecked

Tuning Forks

DCS #


Area

3D InstrumentsTopic


Concept

tuning fork, resonance, harmony, dissonance,Keywords

ActiveStatus

49Location


Rating

Set of tuning forks with somematched pairs.

BriefDescription

EquipmentNeeded

As of 12-12-2011

** indicates matched pair

1X 128 Hz “C”2X 256 Hz “C”1X 288 Hz “D”2X** 320 Hz “E”2X** 384 Hz “G”1X 480 Hz “B”2X** 1000 Hz

---------------------------------13 Total,

Details

183Demo #


289Related Demos

References

Other Uses


YesChecked

RESONATOR BOX SET

3D46.?DCS #


Area

3D InstrumentsTopic

3D46 Tuning ForksConcept

tuning fork, resonator box set, coupled resonator,amplification, sympathetic vibration, tone,

Keywords

ActiveStatus

52Location


Rating

Resonator cases with tuning forksproduce a louder tone with a greaterrange of audible overtones. You canprovide an interesting demonstrationof sympathetic vibration.3B60.? = Beats3B70.? = Coupled Resonators3D46.? = Tuning Forks

BriefDescription

Tuning Fork and Resonator Box sets.EquipmentNeeded

Sympathetic Vibrationdemonstration - Place tworesonance cases of the same size,shape and construction near eachother; a vibration is existed only inone fork, the other case and tuningfork will begin to vibratesympathetically.

Details

307Demo #


Related Demos

References

Other Uses


YesChecked

BELL AND WHISTLES

3D?.?DCS #


Area

3D InstrumentsTopic

variousConcept

bells, whistles, resonance, instrument,Keywords

ActiveStatus

49Location

� very very oldbut effective

Rating

maybe:3B30.55 = Two whistles of the samepitch are blown and one is thenheated with a match.3B60.15 = beat whistles

BriefDescription

EquipmentNeeded

Details

282Demo #


Related Demos

References

Other Uses


YesChecked

LOUDSPEAKERS / SPEAKERS

DCS #


Area

3E SoundReproduction

Topic

3E20Loudspeakers

Concept

loudspeakers, sound reproduction, source, interference.Keywords

ActiveStatus

49Location


Rating

Speakers and frequency generatorallow for experiments involvingsound frequency such asresonance, interference, beats, etc.

BriefDescription

Signal generator / amplifier for other audio source (notincluded)

EquipmentNeeded

There is one pair of speakers thatcan be used to show the effect ofspeakers in/out of phase by wiringthem backwards.

Details

285Demo #


291 299 285281 271 295

Related Demos

References

Other Uses


YesChecked

LARGE SPEAKERS

3E20.01DCS #


Area


Topic

3E20Loudspeakers

Concept

diffraction, interference, sound, speaker, wave motion,Keywords

ActiveStatus

52Location


Rating

General-Use speakers forsound/acoustical experiments

BriefDescription

EquipmentNeeded

Details

299Demo #


285291 299 285281 271 295

Related Demos

References

Other Uses


YesChecked

SPEAKERS ACRYLIC CASE

DCS #


Area


Topic

3E20Loudspeakers

Concept

speakers, interference, clear, acrylic,Keywords

ActiveStatus

49Location

��Rating

2 Speakers in acrylic cubesBriefDescription

EquipmentNeeded

Regular speakers with banana plugconnections. Useful for soundinterference experiments.

Details

291Demo #


291 299 285281 271 295

Related Demos

References

Other Uses


YesChecked

GROOVY SPEAKER

DCS #


Area


Topic

3E20Loudspeakers

Concept

Keywords

ActiveStatus

52Location


Rating

BriefDescription

EquipmentNeeded

Details

296Demo #


Related Demos

References

Other Uses


YesChecked

Burning Creamer Demo

DCS #

4 ThermodynamicsArea

Topic

Concept

Creamer, burning, energy, chemical potential, flame, candleKeywords

ActiveStatus

12Location

��Rating

Energy concepts demo using candleand creamer in a can.

BriefDescription

Barbecue lighter located above tv’s on shelf 60EquipmentNeeded

Place a candle in the can oppositethe hole and place the shieldbetween the hole and candle.Sprinkle creamer powder right infront of hole and light candle. Pressquickly on the pump to blow thecreamer into the air and it will burnabove the can.

Take care to point the can awayfrom face or flammable materials.

Details

302Demo #


Related Demos

References

Other Uses


YesChecked

Boyle’s Law Overhead Demo

DCS #


4A ThermalProperties ofMatter

Topic

Concept

Pressure, volume, temerature, boyle’s law, boyle, overhead,absolute zero, guage, gas law, thermodynamics

Keywords

ActiveStatus

11Location


Rating

Illustrates the basic relationshipsbetween pressure, volume andtemperature of gases.

BriefDescription

Containers of hot and ice water. Hot water should be nearboiling for maximum pressure change.

EquipmentNeeded

A calibrated syringe is connected toa direct-reading pressure gauge. Asthe volume of the gas in the syringeis varied, the entire class sees thecorresponding pressure changesprojected clearly on the screen.Results are quantitatively accurateandproduce the hyperbolic curve whengraphed.

ABSOLUTE ZERO-A one-piecemetal sphere is connected to thedirect-reading pressure gauge of theunit projected on the screen. Whenthe sphere, containing a gas, isimmersed in water at varioustemperatures, students can read thepressure changes directly off thescale on the screen. Whentemperature vs. pressure readingsare graphed, Absolute Zero isdetermined by extrapolation.

Details

091Demo #

Could not observe any pressure change from cold to hot tapwater. Either a problem with the metal sphere or is simplynot sensitive enough.


213Related Demos

References

The “Absolute Zero Device” works better for that application.Other Uses


YesChecked

LIQUID CRYSTALS PLATE

4A10.50DCS #



Topic

4A10 ThermometryConcept

liquid crystal plate, thermometer, heat, conduction, thermal,cholesteric,

Keywords

ActiveStatus

9Location


Rating

This metal strip is placed with onepost in the beaker with ice water andwith the other post in the beaker withhot water. We can see the colors onthe crystal sheet - blue colors areassociated with warmertemperatures and red colors withcooler temperatures.

BriefDescription

Thermal conductivity apparatus; two 250 ml beakers: one -with ice water, the other - with hot water.

EquipmentNeeded

This film is sensitive to thetemperature range of 25 to 35degrees Celsius. Be careful not toheat the crystals beyond boiling anddo not exert excessive pressure onthe film.Take ice from the Demo RoomRefrigerator to get ice water.

Quick Hints:Rinse first with cold water to “reset”to blackDemo takes 5-10 minutes to“develop” with cold and hot tapwater in beakers.ORHold lengthwise/vertically at top ,hold lit match at bottom.

Details

080Demo #


Related Demos


Other Uses


YesChecked

BALL and RINGS (ball is smaller or laregr than ring)

4A30.20DCS #



Topic

4A30 SolidExpansion

Concept

ball, ring, temperature, thermal, expansion, heat, through,Keywords

ActiveStatus

10Location


Rating

Two sizes of rings: SMALLER willallow ball to pass through whenONLY when the RING IS HOT, theLarger RING will only allow the ballto pass through when the BALL ISCOOL, the brass ball or rings areheated to change the result. infrared

BriefDescription

Brass ball and ring with wooden handles - ball has a smallerdiameter than some rings, larger than others. Propane fuelcylinder and torch needed (shelf 57).

EquipmentNeeded

Please, cool down the metal parts inthe bucket with cold water after youare done with demonstration.

When using the ball and smallerring, take care not to let the ring coolenough to get stuck over the ball orit can be difficult to remove.

Details

074Demo #


092Related Demos

Central Scientific Company (CENCO’99,129); Sutton (H-15).References

Other Uses


YesChecked

BIMETALLIC STRIP

4A30.10DCS #



Topic

4A30 SolidExpansion

Concept

bimetallic strip, compound bar, temperature, heat,thermostat, expansion, thermal,

Keywords

ActiveStatus

9Location


Rating

This bar made of two differentmaterials curls when it is heated up,because the coefficients of linearexpansion for brass and steel aredifferent.

BriefDescription

Compound bar with wooden handle; Propane torch (shelf57).

EquipmentNeeded

You need to have a container withcold water to cool down thecompound bar after demonstration(use a bucket from under the sink inthe Demo room).

Details

076Demo #


Related Demos

University of Maryland Physics Lecture-DemonstrationFacility (H-13); Sargent-Welch/ CENCO 2001-2002 (709).

References

Other Uses


YesChecked

RUBBER BAND WHEEL

4A30.85DCS #



Topic

4A30 SolidExpansion

Concept

rubber band wheel, rubberband, thermodynamics,expansion, contraction, heat, infrared heater, bicycle, rim,spokes, center of mass, gravity, rotate, solid,

Keywords

Needs RepairStatus

3Location


Rating

Heating one quadrant of the wheel’sspokes causes those spokes tocontract, resulting in a shift of thewheel’s center of mass. Gravity willthen cause the wheel to slowlyrotate.

** This takes a while to set up,bands will break if left on after use.*

BriefDescription

Heat source, preferably the infrared heater, so that air is notblowing across the rubber band spokes.(Infrared heater stored with “94 Infrared Heat Focusing” onshelf 5)

EquipmentNeeded

(Wheel balancing and other detailedinstructions are available in thedemo box.)

Do not expect the wheel to turnreally fast. Once working properly, itrotates at a Ferris wheel pace.

When storing the demo, the rubberband spokes MUST be unhookedand placed in a Ziplock bag to keepthem from deteriorating.

Details

064Demo #

Needs new rubber bands, those included are too brittle towithstand wheel building and applied heat.


Related Demos

References

Takes 20-30 minutes to build and balance wheel.Other Uses


YesChecked

Thermal Expansion Plate

4A30.22DCS #



Topic

4A30 SolidExpansion

Concept

heat, conduction, ball, temperature, thermal, expansionKeywords

ActiveStatus

30Location

��Rating

Heating a metal plate with a hole toosmall for the ball can make the holelarge enough for the ball to fitthrough.

BriefDescription

Sphere from “Ball and Rings” on shelf 10.

Propane burner and tank from equipment shelf

EquipmentNeeded

4/12/2015Be careful not to get thesphere stuck in or through the hole!Once the ball is stuck it is difficult toheat the plate enough to extractwithout also heating the ball somuch that it expands too.

Using the propane torch, heat thealuminum plate for ~1.5 minutes.Once plate is hot enough, the hole inthe center will be large enough toallow the sphere (from ball over ringdemo) to pass through. The spherecan pass through the hole for ~30seconds.

Details

092Demo #


074Related Demos

References

Other Uses


YesChecked

MAGIC MIRROR

4B10.? / 6A10.?DCS #


4B Heat and theFirst Law

Topic

4B10 HeatCapacity andSpecific Heat

Concept

magic, mirror, reflection, cooling rate, cast, heat,thermodynamics, first law, cooling,

Keywords

In StorageStatus

StorageLocation


Rating

Good visibility in large classes

Several subtle topics. Not good forone specific topic per se.

Easy set up and short demo time.

BriefDescription

Magic Mirror, Stage lampEquipmentNeeded

Reflecting the (relatively) parallelbeam of light from the stage light offthe shiny side of the mirror reflectsthe cast on the opposite side ontothe wall. The effect is created by thecooling rate the mirror experiencedat different points on the mirror dueto the differing thickness. Thisvariation in cooling across the mirror“imprints” the pattern on the mirror ata micron size level. Shining thelamp off the mirror amplifies thevariation into something the can beseen.

Details

327Demo #


Related Demos

Glass Shelves #3CReferences

Other Uses


NoChecked

HEAT CONDUCTOMETER

4B30.10DCS #



Topic

4B30 ConductionConcept

heat conductometer, conduction, first law, wax, differentmetals, conductivity, thermal

Keywords

Needs RepairStatus

10Location


Rating

Three spokes from different metalsradiate from hub. Put wax in thespokes notches, heat hub with apropane torch and compare theconductivities of three differentmetals.

BriefDescription

Non-conducting wooden handle with long rod attached tothe hub with three spokes; Wax; Propane Torch; stand tomount conductometer.

EquipmentNeeded

You need to have a container withcold water to cool downconductometer after demonstration.

To prepare, melt candles to thenotches using barbecue lighter andallow to cool and solidify as pictured,such that the candles fall off whenthe spoke is hot enough.

Details

086Demo #


Related Demos

Central Scientific Company (CENCO’99,133); AmericanJournal of Physics (AJP 60, 846-852 (1992)).

References

Other Uses


YesChecked

INFRARED HEAT FOCUSING

4B40.10DCS #



Topic

4B40 RadiationConcept

heat, fire, focus, burn, infrared heat focusing, IR, parabolic,light the match, focal point, thermal, temperature, dish,radiation, transmission of radiant heat,

Keywords

ActiveStatus

5Location


Rating

A curved mirror is used to focusinfrared heat onto a match, causingit to burn.305

BriefDescription

Holmes heater; concave mirror platform, large kitchenmatches

EquipmentNeeded

Focal point of mirror is about 9 cmfrom center.

Place infrared heat source such thatthe ball on the string just reachesthe white square. Turn heater onand let preheat for several minutes.Place match in dowel and wait 1-2minutes for match to ignite.

Note that the heater may need to bemoved closer if the room isparticular drafty.

Details

094Demo #


Related Demos

References

Other Uses


YesChecked

Fire Starter (Fire Piston)

4B70.10DCS #



Topic

4B70 AdiabaticProcesses

Concept

combustion, pressure, temperature, cotton, ignition, fire,piston, fire piston, adiabatic compression, compression

Keywords

ActiveStatus

10Location


Rating

Compress the air inside the tubeusing the plunger. Cotton at thebottom of the tube will ignite whenpressure is increased rapidly.Shows temperature increases whena fixed mass of gas is compressed.

BriefDescription

cotton-in boxpipe cleaners for cleaning-in boxlubricant for O rings-in box

EquipmentNeeded

Use a very small piece of cotton -almost as small as possible.

Details

077Demo #


Related Demos

References

Also demonstrate the need for oxygen to supportcombustion by showing that re-ignition will only occur if thepiston is completely removed to allow a fresh supply of air.The apparatus can also be used to demonstrate cloudformation when the reduction in pressure lowers the

Other Uses


YesChecked

3D MODEL OF PVT SURFACES

4C10.10DCS #


4C Change ofState

Topic

4C10 PVTSurfaces

Concept

3D model of PVT surfaces, thermodynamics, change ofstate, temperature, pressure, volume,

Keywords

ActiveStatus

11Location


Rating

Use this models of ThermodynamicSurfaces to show P-V-T relations forcarbon dioxide and water instead ofusual set of isothermal curves forthese substances.

BriefDescription

Model for carbon dioxide; Model for water; Manual withusual set of isothermal curves.

EquipmentNeeded

Details

090Demo #

Could purchase new ones?Suggestions forImprovement

Related Demos

American Journal of Physics (AJP 30, 870-877 (1962));University of Maryland Physics Lecture-DemonstrationFacility (I4-01).

References

Other Uses


YesChecked

Hand Warmers (Large & Small)

4C20.60DCS #


4C Change ofState

Topic

4C20 PhaseChanges: Liquid-Solid

Concept

heat pack, phase changeKeywords

ActiveStatus

7Location

��Rating

BriefDescription

EquipmentNeeded

Details

098Demo #


Related Demos

References

Other Uses


YesChecked

FOGGER MACHINE

4B70.21 / 4C30.?DCS #


4C Change ofState

Topic

4C30 PhaseChanges: Liquid-Gas

Concept

fogger machine, temperature, change of state, phasechange, liquid, gas

Keywords

ActiveStatus

11Location


Rating

Use this Fogger machine todemonstrate Phase Changes (fromLiquid to Gas).Dispense liquid into fog machine.Allow fog machine a few minutes towarm up. Press button for fogoperation.4C30.? = Phase Changes: Liquid-Gas

BriefDescription

Fogger machine; Fog Liquid - unscented, water basedsolution.

EquipmentNeeded

DO NOT make too much fog, firealarm will start working. Try to makeas good ventilation as possible. Usea fan.

Details

084Demo #


113Related Demos

References

Other Uses


YesChecked

Dippy Birds

4C31.30DCS #


4C Change ofState

Topic

4C31 Cooling byEvaporation

Concept

Temperature differential, temperature, drinking birds, happybirds, evaporative cooling, thermodynamics, fluidmechanics, center of mass

Keywords

ActiveStatus

18Location


Rating

Wet the head and beak of the birdwith cold water. Bird with sway backand forth. A cup of cold water can beplaced under the bird’s beak to keepthe beak moist and to simulatedrinking. The bird can also functionwithout a cup of water

BriefDescription

Cup filled with cold waterEquipmentNeeded

The cup should be tall enough thatthe liquid can drain back into thebody after tipping over (about theheight of the supports. Using asofter cup than a glass beaker canlessen the impact when the birddrops forwards.

Details

130Demo #


404Related Demos

References

It may take some time to set up the system just right. Thefirst cycle will take the most time. Take 10 minutes to set upbefore lecture.

Other Uses


YesChecked

Drinking Bird

4C31.30DCS #


4C Change ofState

Topic

4C31 Cooling byEvaporation

Concept

Temperature differential, temperature, drinking birds, happybirds, evaporative cooling, thermodynamics, fluidmechanics, center of mass, vapor, pressure

Keywords

ActiveStatus

17Location

��Rating

Wet the head and beak of the birdwith cold water. Bird with sway backand forth. A cup of cold water can beplaced under the bird’s beak to keepthe beak moist and to simulatedrinking. The bird can also functionwithout a cup of water

BriefDescription

Cup filled with cold waterEquipmentNeeded

The cup should be tall enough thatthe liquid can drain back into thebody after tipping over (about theheight of the supports. Using asofter cup than a glass beaker canlessen the impact when the birddrops forwards.

It may take some time to set up thesystem just right. The first cycle willtake the most time. Take 10 minutesto set up before lecture.

Details

404Demo #

Exactly the same as Demo 130.Suggestions forImprovement

130Related Demos

References

Other Uses


YesChecked

SLING PSYCHROMETER

4C32.10DCS #


4C Change ofState

Topic

4C32 Dew Pointand Humidity

Concept

sling psychrometer, relative humidity, temperature, heat,dew point, change of state, hygrometer, wet and dry bulb,

Keywords

In StorageStatus

StorageLocation


Rating

Use this sling psychrometer formeasurements of relative humidity.

BriefDescription

Frame with two thermometers, wet and dry; Plasticcontainer for water. Humidity tables.

EquipmentNeeded

HOW TO USE: Remove theinstrument from the protecting case.Saturate covering the bulb wickingwith room temperature water, thenwhirl the instrument for 15 or 20seconds. Stop and read the wet-bulbthermometer (repeat the whirlinguntil two wet-bulb readings agree atthe lowest indication obtainable).Read dry-bulb temperature and findthe relative humidity in the tables.Keep wick clean!

Details

318Demo #


Related Demos

Sutton (H-92).References

Other Uses


NoChecked

FRANKLIN’S PALM GLASS

4C33.50DCS #


4C Change ofState

Topic

4C33 VaporPressure

Concept

Franklin’s palm glass, hand boiler, pulse, love meter,change of state, vapor pressure, temperature, heat, volatileliquid, boil, energy conversion,

Keywords

ActiveStatus

17Location


Rating

When one bulb of this Hand boiler isheld in the hand, body heat causesthe liquid to boil, then vapor movesinto the other bulb where it bubblesrapidly. iron wir

BriefDescription

Two glass bulbs, connected by a tube, contain a volatileliquid.

EquipmentNeeded

This device should not be used witha heat source any warmer than bodytemperature. If the tube is held at aslight incline, the liquid will bepushed by the gas and appear toflow uphill.

Details

072Demo #


Related Demos


Other Uses


YesChecked

PHASE CHANGE IN IRON WIRE

4C45.10DCS #


4C Change ofState

Topic

4C45 PhaseChanges: Solid-Solid

Concept

phase change in iron wire, transition, heat, temperature,sag, electric current, Newton, exponential cooling, solid,crystal, thermal expansion,

Keywords

ActiveStatus

9Location

�� goodand engaging(BUT OLD)

Rating

The iron wire is strung horizontallyabove the lecture table. If we heatthe wire by passing an electriccurrent through it the wire willexpand and sag. If the heatingpower is turned off the wire will coolto the room temperature in anapproximately exponential manneraccording to Newton’s law of

BriefDescription

1.5 m iron wire (#22 gauge); Two stands; Cable with two C-connectors and plug; Variable “Adjust-A-Volt” Transformer(shelf 61).

EquipmentNeeded

The wire used in this demonstrationis 22 gauge (0.064 cm diameter)“Black Annealed” iron wire which issold in hardware stores for generalutility use. The wire is strunghorizontally above the lecture tablewith only a little sag when it is coldand it is connected to a variabletransformer VARIAC on shelf 61( set Voltage at Low and make it 35Volts for 1.5 m wire).Be careful with Voltage, wire canburn easily!

DO NOT PLUG INTO WALL!!!!

Details

082Demo #


Related Demos

Sutton (H-9); The Physics Teacher (13, 290, (1975));Physics for College Students (D.E. Tilley, W. Thumm).

References

Any transformer will work for this demo.Other Uses


YesChecked

RADIOMETER

4D20.10DCS #


4D Kinetic TheoryTopic

4D20 Mean FreePath

Concept

radiometer, kinetic theory, mean free path, black, white,vanes, vacuum, radiation, absorber, radiator, absorption,energy, light, momentum, particle, transfer, reflection,

Keywords

ActiveStatus

9Location


Rating

This sphere could be powered bythe sun. In our case, when light fromthe lamp strikes radiometer wings, ittransfers heat to each one to thedifferent degree and vane begins tospin.m

BriefDescription

Radiometer, Gooseneck Desk Lamp (60 W light bulb).EquipmentNeeded

The lighter wings reflect the rays,they take on very little energy anddo not bounce off very fast. The darkwings absorb the rays and they takeon a great deal of energy. The vanebegins to spin at terrific speed. So,the stronger the light, the moreenergy there is to “heat up” the darkside of the wing and vanes spinfaster and faster as the light getbrighter.Handle glass radiometer (spare incabinet 100) with care!

Details

081Demo #


Related Demos

Central Scientific Company (CENCO’99,135); AmericanJournal of Physics (AJP 29, 666-668 (1961); University ofMaryland Physics Facility ( I2--1).

References

Other Uses


YesChecked

METAL CAN AND BALLOON

4E10.15DCS #


4E Gas LawTopic

4E10 ConstantPressure

Concept

metal can, balloon, gas law, constant pressure, boil water,expansion, air pressure,

Keywords

Needs RepairStatus

11Location


Rating

Place a balloon on the fitting tube inthe cap of the metal can with water.Keep the can on the hot plate untilthe water starts boiling. See whatwill happen to the balloon.

BriefDescription

Metal can with metal cap and fitting tube in it; Water;Balloon; Hot plate (Demo 181, Shelf 12)

EquipmentNeeded

Be careful, when metal can is hot!Only a small volume of water isneeded.

Details

078Demo #

Some type of fastener is needed to secure the balloon to thetop of the can: rubber bands? Use a zip tie


Related Demos

References

Other Uses


YesChecked

ABSOLUTE ZERO DEVICE

4E30.10DCS #


4E Gas LawTopic

4E30 ConstantVolume

Concept

absolute zero device, constant volume bulb, gas law,pressure, heat, temperature, gauge, water, ice, bath,

Keywords

ActiveStatus

39Location


Rating

The Absolute Zero Apparatus is anair-filled metal sphere, which isattached to the pressure gauge.Immerse the sphere in water ofdifferent temperature (ice water,boiling water) and read the resultingpressure.

BriefDescription

Absolute Zero Apparatus: Thermometer; Plastic containerwith ice; Metal container for boiling water; Hot plate (to heatwater).

EquipmentNeeded

You can plot a graph of pressure asa function of temperature. Draw thebest line through the three pointsdetermined at boiling, freezing, androom temperature, and extend it sothat it intersects the pressure axis,which is T=0 in Kelvin.

Details

213Demo #

Redundant with Demo 091 Boyle’s LawSuggestions forImprovement

091Related Demos


Other Uses


YesChecked

Stirling Engine

DCS #


4F Entropy and theSecond Law

Topic

4F30 Heat CyclesConcept

stirling engine, heat differential, mechanical workKeywords

ActiveStatus

10Location


Rating

Runs on any low temperaturedifferential, for example thedifference between the palm of ahand and room-temperature or roomtemperature and an ice cube. Thisdevice is unpressurized, running atnear-atmospheric pressure Thepower produced is less than onewatt,

BriefDescription

stirling engine, cold sorce (optional) can be ice cube, butplease, do not let water pool in device, use a plastic bag.

EquipmentNeeded

Delicate!! Engine takes a minute towarm up/start - be patient. May needto give it a slight turn

Details

164Demo #


Related Demos

References

Other Uses


YesChecked

THERMOCOUPLES

4A?.? / 4B?.? / 4C?.? /5E50.10

DCS #


variousTopic

variousConcept

thermocouple, low, small, temperature, thermometer, heatKeywords

ActiveStatus

10Location


Rating

Type K thermocouple thermometerwith very fast response time.

Rated -50°C to 1350°C

BriefDescription

EquipmentNeeded

4A10.25 = Measure temperatureswith thermocouple4A20.30 = maximum density ofwater; A flask with a narrow stemshows volume changes and athermocouple shows temperaturechanges when water is allowed towarm from 0 C.4B40.60 = surface absorption; Aradiant heater is placed midwaybetween two junctions of ademonstration thermocouple and thejunctions are covered with black orwhite caps.4B60.? = for measuring temperaturedifference4B70.30 = adiabatic heating andcooling; An air cylinder moves apiston back and forth and athermocouple measures thetemperature.4C20.10 = A small test tube of wateris cooled in a peltier device and thetemperature is followed with athermocouple.

Details

167Demo #

Can some of the older pieces be removed or are theyactually all necessary?


Related Demos

References

Other Uses


YesChecked

Hot Plate

DCS #


VariousTopic

VariousConcept

Heat source, thermodynamics, electricKeywords

ActiveStatus

12Location

�� staticRating

Use for general heating, especiallygood for reheating heat packs

BriefDescription

EquipmentNeeded

Box contains one electric hot plate.Details

181Demo #


Related Demos

References

Other Uses


YesChecked

ELECTROSTATIC PIN WHEEL

5B30.50DCS #

5 Electricity andMagnetism

Area

5A ElectrostaticsTopic

5A10 ProducingStatic Charge

Concept

electrostatic pin wheel, electric field, potential, Van deGraaff, discharge, point, whirl, charge, discharge, induction,spin,

Keywords

ActiveStatus

27Location


Rating

Place pin wheel with two dischargepoints on the top of Van de GraaffGenerator. This electric whirl startsspinning.

BriefDescription

Two discharge points Pin Wheel, stand, Van de GraaffGenerator.

EquipmentNeeded

When a lot of charge is placed onthe whirl, the sharp points create avery high electric field. Nearby air ischarged by induction and acquiressome of the charges from the pointsby discharge. Now the air and pointsrepel each other - and both moveaway.

Details

027Demo #


Related Demos

References

Other Uses


YesChecked

ELECTROSTATIC RODS AND PELTS

5A10.10DCS #


Area



Concept

electrostatic rods and pelts, fur, static, charge, discharge,conduction, electric field, attraction, repulsion, induction,polarization,

Keywords

ActiveStatus

32Location


Rating

Can show the different chargesimparted to different types ofmaterial by different means.

BriefDescription

EquipmentNeeded

Details

014Demo #

Some materials do not seem to work as well. May need tobe replaced or cleaned.


Related Demos

References

Other Uses


YesChecked

Van de Graaff Generator

DCS #


Area



Concept

VDG, Van de Graaff Generator, electricity and magnetism,electricity

Keywords

ActiveStatus

27Location


Rating

This is an electrostatic machinewhich uses a moving belt toaccumulate very highelectrostatically stable voltages on ahollow metal globe.

BriefDescription

Grounding sphereEquipmentNeeded

The Van de Graaf generator can bethought of as a constant-currentsource connected in parallel with acapacitor and a very large electricalresistance.

This particular generator has “hairs”that stand up and illustrate theaccumulated charge. 5/27/2015

Details

383Demo #



References

Other Uses


YesChecked

ELECTROSTATIC PITH BALLS

5A20.20 / 5B10.35DCS #


Area


5A20 Coulomb'sLaw

Concept

electrostatic pith balls, Coulomb’s law, charge, attraction,repulsion, induction, polarization,

Keywords

ActiveStatus

32Location


Rating

Pith balls and conducting balls foruse with the Van De Graaffgenerator and/or the WimshurstStatic Machine.

BriefDescription

EquipmentNeeded

Very old.Details

012Demo #


163Related Demos

References

Other Uses


YesChecked

ELECTROSTATIC FLYING SAUCERS

5A20.31DCS #


Area


5A20 Coulomb’sLaw

Concept

electrostatic flying saucers, aluminum plates, pie tins,Coulomb’s law, repulsion, Van de Graaff,

Keywords

ActiveStatus

27Location


Rating

Aluminum plates can fly if you willplace them on the top of Van DeGraaff Generator.

BriefDescription

Van De Graaff Generator, aluminum plates,EquipmentNeeded

If Generator doesn’t keep chargewell use the dryer to decrease ahumidity.

Details

028Demo #


182Related Demos

References

Other Uses


YesChecked

ELECTROSCOPES

5A22.10DCS #


Area


5A22 ElectrostaticMeters

Concept

electroscope, Braun, electrostatic, meter, leaf, needle,Keywords

ActiveStatus

32Location

�� staticRating

Can be used to indicate the chargeacquired by different means.

BriefDescription

includes3 electroscopes. May need fur, pvc pipe, cloths,balloon (demo 014).

EquipmentNeeded

The pieces inside the electroscoperepel each other when staticelectricity is applied from theincluded items.

The tall round electroscope worksthe best.

Details

010Demo #

The short round scope appears to have a missing piece.Suggestions forImprovement

Related Demos

References

Other Uses


YesChecked

ELECTROSTATIC GROUNDING SPHERE

5A50.30DCS #


Area


5A50 ElectrostaticMachines

Concept

electrostatic grounding sphere, globe, Van de Graaff,ground, grounded, discharge, spark, lightning,

Keywords

ActiveStatus

27Location


Rating

The Van de Graaff generator buildsup a charge, then dispels thatcharge through the groundedsphere.

BriefDescription

EquipmentNeeded

Details

338 , 339, 340Demo #


182Related Demos

References

Other Uses


YesChecked

WIMSHURST STATIC MACHINE

5A50.10DCS #


Area



Concept

Wimshurst static machine, electrostatics, high voltage,capacitance, charge, discharge, conduction, electric field,attraction, repulsion, induction,

Keywords

Needs RepairStatus

32Location


Rating

This machine provides high voltageelectric charges for a variety ofelectrostatic experiments.

BriefDescription

Wimshurst Static Machine; Instructional Manual.EquipmentNeeded

Use electrostatic balls with thismachine to demonstrateelectrostatic attraction and repulsion(instead of Van de Graaff Generator)- when two conducting ballssuspended from the two arms of themachine, they are oppositelycharged and attract each other;when the same two balls suspendedfrom a single arm of the machine,they will repeal each other. You can fined theory of operationand some experiments description inthe Instructional Manual forWimshurst Static Machine.

Details

163Demo #

Mounts for arms are broken on both sides. One remainsusable, one does not hold the arms level.


Related Demos

References

Other Uses


YesChecked

Van de Graaf Generator

DCS #


Area



Concept

VDG, Van de Graaf Generator, electricity and magnetism,electricity

Keywords

ActiveStatus

27Location

��Rating

This is an electrostatic machinewhich uses a moving belt toaccumulate very highelectrostatically stable voltages on ahollow metal globe.

BriefDescription

EquipmentNeeded

The is a 400kV generator and canproduce sparks up to 5-6”

The Van de Graaf generator can bethought of as a constant-currentsource connected in parallel with acapacitor and a very large electricalresistance.

The potential differences achieved inmodern Van de Graaff generatorscan reach 5 megavolts. Applicationsfor these high voltage generatorsinclude driving X-ray tubes,accelerating electrons to sterilizefood and process materials, andaccelerating protons for nuclearphysics experiments

Details

182Demo #


005, 338, 339,340, 383

Related Demos

References

Other Uses


YesChecked

Fun Fly Stick

DCS #


Area



Concept

Van de Graaff Generator, static, electrostatic, charge,levitate

Keywords

ActiveStatus

27Location

�� good butlacks zestCHEESY

Rating

Small handheld Van de Graaffgenerator that can replicate many ofthe experiments for largergenerators

BriefDescription

2 AA batteriesEquipmentNeeded

Instructions and other pieces areincluded in box.

Details

405Demo #


Related Demos

References

Other Uses


YesChecked

ELECTROSTATIC DEMONSTRATION SET

5A?.?DCS #


Area


variousConcept

electrostatic demonstration set, Van de Graaff, Wimshurstmachine, bell, spin, induce, charge, induction,

Keywords

ActiveStatus

32Location


Rating

For use with the Van De Graaffgenerator and/or the WimshurstStatic Machine.

BriefDescription

Van De Graaff generatorEquipmentNeeded

Details

009Demo #


163Related Demos

References

Other Uses


YesChecked

ELECTROSTATIC FLYING PEANUTS

5B10.25DCS #


Area

5B Electric Fieldsand Potential

Topic

5B10 Electric FieldConcept

electrostatic flying peanuts, Van de Graaff, packing peanuts,repulsion, repel, electric field, styrofoam,

Keywords

ActiveStatus

27Location


Rating

The peanuts fly away when they areplaced on top of the Van de Graaffgenerator and the generator isactivated.

BriefDescription

EquipmentNeeded

Packing peanuts are in the demobox, multiple Van de Graaffgenerators are available.

Details

005Demo #


182Related Demos

References

Other Uses


YesChecked

ELECTRIC FIELD LINES BETWEEN ELECTRODES

5B10.40DCS #


Area


Topic


electric field lines between electrodes, salt water, overheadprojector, potassium permanganate, dish,

Keywords

ActiveStatus

33Location


Rating

This demo was designed to be usedon an overhead projector. Placetwo electrodes, or electrode plates inthe dish with salt water, connectthem to the H.V. Power supply(missing). When you put PotassiumPermanganate in the water, you cansee electric field lines.

BriefDescription

Plexiglas/plastic dish, (Salty) Water, variouselectrodes, Potassium Permanganate, H.V. Power supply

EquipmentNeeded

There are a few ways to use thisdemo. There are 2 round electrodesfor the water, and 2 plate electrodes.There is also a large metal hoop thatcan be used to simulate groundedpotential at infinity. The picture hereis of the two round electrodes atpositive potential and the metal plateat ground. When the PotassiumPermanganate is add, it spreads outalong the field lines that wouldrepresent 2 protons. The plates canbe used to show capacitor fieldlines.

Details

019Demo #


Related Demos

References

Sprinkle a small amount of KMN04 on the water using theincluded film canister.

Other Uses


YesChecked

FLUORESCENT LIGHT BULBS

5B10.? / 5N20.50DCS #


Area


Topic


fluorescent light bulbs, Van de Graaff, electric field, Teslacoil, electromagnetic radiation, induction,

Keywords

ActiveStatus

Cabinet 70Location


Rating

Can be used to show the electricfield around a Van De Graaffgenerator, among other things(Tesla coil)

5B10.? = Electric Field5N20.50 = Tesla Coil

BriefDescription

EquipmentNeeded

Large and small tubes are in thecabinet, in different boxes.

Details

9006Demo #


178Related Demos

References

Other Uses


YesChecked

RADIO SHACK

5B20.35DCS #


Area


Topic

5B20 Gauss' LawConcept

radio in Faraday cage, radio shack, electric field, potential,gauss’ law, gauss, waves,

Keywords

ActiveStatus

028Location


Rating

Outside the cage the radio can pickup transmissions. Inside the cagethe radio is silent. Proves that radiowaves cannot penetrate Faraday’scage.

BriefDescription

D batteries.EquipmentNeeded

Radio reception may not be strongin auditorium 100, so it may beworth checking before lecture. At aminimum, the cage will still block thestatic.

Details

029Demo #


Related Demos

References

Other Uses


YesChecked

ELECTROSTATIC CHARGE SHAPES

5B30.36DCS #


Area


Topic

5B30 ElectrostaticPotential

Concept

electrostatic charge shapes, ball, point, blunt, sharp, electricfield, potential,

Keywords

ActiveStatus

33Location


Rating

Demonstrate how the shape of anobject affects the acquired chargeand electric field.

BriefDescription

Van de Graaff generator.EquipmentNeeded

Details

020Demo #


Related Demos

References

Other Uses


YesChecked

LIGHTNING ROD

5B30.30DCS #


Area


Topic

5B30 ElectrostaticPotential

Concept

lightning rod, Van de Graaff, discharge, electric field,potential, electrostatic,

Keywords

ActiveStatus

32Location


Rating

Demonstrates the principle uponwhich lightning rods are based.There is no discharge from the Vande Graaff generator when this unit isplaced near the sphere.0

BriefDescription

Van de Graaff generator;grounded discharge sphere;alligator clip to connect to ground post.

EquipmentNeeded

Details

033Demo #


Related Demos

References

Other Uses


YesChecked

Wicked Huge Tuning Capacitor

DCS #


Area

5C CapacitanceTopic

5C10 CapacitorsConcept

Keywords

ActiveStatus

32Location


Rating

Very large tuning capacitor.BriefDescription

EquipmentNeeded

Details

008Demo #


Related Demos

References

Other Uses


YesChecked

LEYDEN JARS

5C30.10DCS #


Area

5C CapacitanceTopic

5C30 EnergyStored in aCapacitor

Concept

Leyden jar, bottle, capacitance, energy stored in a capacitor,aluminum foil, electrostatic, conductor, insulator, dielectric,Van de Graaff, Wimshurst machine,

Keywords

DuplicateStatus

312L Bottle LeydenJar and Light

Location


Rating

These jars are used to store chargesfrom an electrostatic generator.They consist of three parts: an outerconductor, an inner conductor and adielectric jar. Connect Jars to Vande Graaff Generator and store thecharge.

BriefDescription

Leyden Jar, Van de Graaff Generator, charger with aninsulated handle.

EquipmentNeeded

The outside coating of the Jarshould be connected to the groundso that the repelled charge can getaway.When inner and outer coatings ofjars are connected together by thedischarger, a heavy spark is given.It is dangerous to take the charge ofthe Leyden Jar when it is fullycharged! The discharger has aninsulated handle and the jar may bedischarged by it without danger.

Details

026Demo #


2L BottleLeyden Jar andLight

Related Demos

References

Other Uses


YesChecked

SHORT A CAPACITOR

5C30.20DCS #


Area

5C CapacitanceTopic


Concept

short a capacitor, spark, energy stored, capacitance, highvoltage, charge, discharging,

Keywords

InactiveStatus

33Location


Rating

Connect High Voltage Power Supply(missing) to the metal studs on thecapacitor and charge it. Disconnectone connector from power supplyand place metal part of screw driveron the two capacitor’s leads, you willsee a big spark.

BriefDescription

10 uF Capacitor, High Voltage Power Supply and coupleconnectors (alligator - banana), Screw driver.

EquipmentNeeded

Screw driver should have a goodinsulated handle. After spark, turnpower supply off and place metalpart of screw driver on thecapacitor’s studs again, so youcould be sure that there is no chargeon it. Take parts apart.

Details

002Demo #

Demo box is empty. Need to find the following: a 10 uFcapacitor, wires, screwdriver.


006Related Demos

References

Other Uses


YesChecked

2L Bottle Leyden Jar and Light

5C30.30DCS #


Area

5C CapacitanceTopic


Concept

capacitor, capacitance, leyden, leyden jar, jars, 2L bottle,two liter bottle, fluorescent light, Van de Graaff, Wimshurstmachine

Keywords

ActiveStatus

31Location


Rating

Leyden jar made of a two liter sodabottle can store enough charge tolight a fluorescent light bulb.

BriefDescription

Wimshurst machine (shelf 32)orVan de Graaf Generator

EquipmentNeeded

Charge 2L Bottle with theWimshurst machine or the Van deGraaf Generator. Allow severalsparks to connect with the screw inthe bottle’s cap. Connect onealligator clip from the florescent lightto the metal tab on bottle. Todischarge capacitor and light thelight, touch the 2nd clip to screw inbottle’s cap.

Details

026Demo #


163 LEYDENJARS

Related Demos

References

Other Uses


YesChecked

OHM’s Law

DCS #


Area

5D ResistanceTopic

Concept

Resistor, stripes, readingKeywords

ActiveStatus

37Location

��Rating

Giant color coded “resistors” withbanana clips

BriefDescription

EquipmentNeeded

Details

303Demo #


Related Demos

References

Other Uses


YesChecked

RESISTANCE VS. TEMPERATURE

5D20.10DCS #


Area

5D ResistanceTopic

5D20 Resistivityand Temperature

Concept

resistance vs. temperature, resistivity, filament, bulb,resistant heat dissipation, resistive heating,

Keywords

ActiveStatus

33Location


Rating

Change the surroundingtemperature of the filament and usethe brightness of the bulb todetermine the relationship betweenthe surrounding temperature and theresistance of the filament.

BriefDescription

EquipmentNeeded

Use the filament from a 40W lightbulb for better results.

** Caution: Fragile - open filament

Details

024Demo #


Related Demos

References

Other Uses


YesChecked

RESISTANT HEAT DISSIPATION

5D20.31DCS #


Area

5D ResistanceTopic

5D20 Resistivityand Temperature

Concept

resistant heat dissipation, resistive heating, resistance,temperature, pencil lead, carbon, tungsten, filament,resistivity, bulb,

Keywords

ActiveStatus

33Location


Rating

-Very good demonstration ofresistive heating. Does combineother more subtle but easy toexplain ideas.-Very visible to a large class-Set up takes a minute or two iffamiliar with the experiment.-Detailed Instructions in the box.

BriefDescription

DC Power supply (must supply at least 6A). MechanicalPencil Lead. 2 banana-alligator clips. Clamp-able stand.

EquipmentNeeded

A piece of graphite is attached as aresistor load to a power supply.Initially the resistance is about anohm but as the current through thegraphite heats it up, some of thegraphite burns away. As thishappens the cross-sectional areaget smaller increasing theresistance. Increased resistancedissipates more heat and eventuallythe lead glows (as seen in thepicture). Once the graphite getsnarrow enough the heat burnsthrough it. Just before this happensthere is a very intense flash.

Details

022Demo #


Related Demos

References

Other Uses


YesChecked

JACOB’S LADDER

5D40.10DCS #


Area

5D ResistanceTopic

5D40 Conductionin Gases

Concept

Jacob’s ladder, resistance, conduction in gases, spark, heat,air, jacobs

Keywords

ActiveStatus

Floor/CartLocation


Rating

The spark heats the air, whichtravels upward with accompanyingsparks.

BriefDescription

EquipmentNeeded

Details

350Demo #


Related Demos

References

Other Uses


YesChecked

THERMOPILE

5E50.10 / 4B40.? /6B40.? / 7A10.50

DCS #


Area

5E ElectromotiveForce and Current

Topic

5E50Thermoelectricity

Concept

thermopile, thermocouple, thermoelectricity, heater, voltage,radiation, blackbody, photoelectric effect, photoconduction,infrared, IR, Peltier,

Keywords

ActiveStatus

33Location


Rating

The output from a thermopile isconnected to a digital voltmeterwhere the voltage is proportional tothe temperature observed: the hotterthe object the higher the voltage.Use a small heater as a heat source.

BriefDescription

Thermopile; Digital Voltmeter; couple connectors and SmallHeater.

EquipmentNeeded

This is only qualitative; the system isnot calibrated. Doesn’t demonstrategreat - the system “Thermopile-Voltmeter” is not so sensible.

4B40.? = Radiation6B40.? = Blackbodies7A10.50 = photoconduction vs.thermopile; photoelectric effect

Details

016Demo #


Related Demos

University of Maryland Physics Lecture-DemonstrationFacility (I2-07).

References

Other Uses


YesChecked

Circuit Kit

DCS #


Area

5F DC CircuitsTopic

Concept

circuit, kit, electricity, student, interactive,Keywords

ActiveStatus

38Location

��Rating

Have your students create circuitsat their desks.The box contains 59kits. Each kit contains 4 alligatorclips, 2 light bulb sockets, and 2 Dbattery holders. D batteries are alsolocated in the box.

BriefDescription

EquipmentNeeded

Details

205Demo #


Related Demos

References

Other Uses


YesChecked

Blow a Resistor

5F15.16DCS #


Area

5F DC CircuitsTopic

5F15 Power andEnergy

Concept

Current, resistor, ohm, electricity, resistance, voltage,Keywords

ActiveStatus

33Location


Rating

Pass electricity through the resistorand see how much current isneeded to blow the resistor

BriefDescription

Power supplyEquipmentNeeded

Do this in a well-ventilated area assignificant amounts of smoke maybe produced. Many resistorsincluded in box.

Details

006Demo #


002Related Demos

References

Other Uses


YesChecked

SERIES AND PARALLEL CIRCUITS

5F20.50DCS #


Area

5F DC CircuitsTopic

5F20 CircuitAnalysis

Concept

series and parallel circuits, light bulbs, DC circuits, analysis,resistance,

Keywords

ActiveStatus

34Location

�� goodRating

Compare how resistance adds up ina parallel arrangement of bulbs tothe resistance in a seriesarrangement.

BriefDescription

EquipmentNeeded

Details

036Demo #

The switch on the large rectangular board does not fitsecurely in the casing. 5x1 casing has come unglued fromthe base.


Related Demos

References

Other Uses


YesChecked

PASCO CIRCUIT BOARD

5F20.72DCS #


Area

5F DC CircuitsTopic


Concept

Pasco, circuit, board, analysis, DC,Keywords

ActiveStatus

33Location

�� good butnot for large class

Rating

This is a very simple bread board forputting together small circuits. It islarge enough to be used with theTeaching Camera to show in-classcircuits.

BriefDescription

2 D batteries. Any other electronics components notalready included that the instructor would like to lecture with.

EquipmentNeeded

This kit contains several differentresistors, a few capacitors of varyingcapacities, a potentiometer and aninductor. The inductor is built intothe board and has a fitted iron coreto go with it to show the effects ofinduction with and without a core.There are also a few LED’s,transistors, diodes and light bulbsthat fit into the board’s built insockets. Wires are included.

Details

004Demo #


Related Demos

References

Other Uses


YesChecked

Human Circuit Balls

DCS #


Area

5F DC CircuitsTopic


Concept

circuit, human circuit, student interactive desktop demo,electricity

Keywords

ActiveStatus

38Location


Rating

Create a cuircuit with the humanbody!-

BriefDescription

Human circuit ball and a human or twoEquipmentNeeded

1) Single Person Method-Close thecicuit by touching both metal contactpoints at the same time.

2) Budy Circuit method-Have oneperson touch one metal contactpoint and have another person touchother contact point and then holdhands. Try using multiple people in achain.

Contains ~50 balls

Details

9016Demo #


Related Demos

References

Looks especially cool in low light, the dark for those who aredaring

Other Uses


YesChecked

CAPACITOR BANK

5F30.11DCS #


Area

5F DC CircuitsTopic

5F30 RC CircuitsConcept

capacitor bank, DC circuits, RC, time constant, charge,discharge, AC, series, stored energy, capacitance

Keywords

ActiveStatus

34Location


Rating

The row of lights shows how energyis stored and discharged by thecapacitors in series. Use AC andDC on the bank to show RC Circuitand time constant.

BriefDescription

Capacitor Bank, DC source (6V cell battery), AC source.EquipmentNeeded

Details

030Demo #


Related Demos

References

Other Uses


YesChecked

Neon Bulb Flasher

DCS #


Area

5F DC CircuitsTopic

5F30 RC CircuitsConcept

circuit, resistor, RC circuit, capacitor, timing, capacitanceKeywords

ActiveStatus

32Location

��Rating

Two resistors (5 mega ohm resistorand 1 mega ohm resistor) and acapacitor make an RC circuit . Whenhooked up to a power supply, thetwo different resistors will allow theneon bulb flash at different ratesdepending on the resistance used.

BriefDescription

High voltage power supply.EquipmentNeeded

For slower flashing use 100 volts.For faster flashing use 150 volts.

Details

015Demo #


Related Demos

References

Other Uses


YesChecked

Historical Resistors and Capacitors

DCS #


Area

5F DC CircuitsTopic

5F40 InstrumentsConcept

Resistance Capacitance resistor capacitorKeywords

ActiveStatus

34Location

�� staticRating

Adjustable capacitors and resistorsand large single resistors.

BriefDescription

EquipmentNeeded

Details

031Demo #


Related Demos

References

Other Uses

3/2/2020DateChecked

YesChecked

RHEOSTATS

5F10.10 / 5F20.33DCS #


Area

5F DC CircuitsTopic

variousConcept

rheostat, potential divider, Ohm’s law, DC circuits, analysis,potentiometer, variable resistance,

Keywords

ActiveStatus

34Location


Rating

Slide-wire rheostats can be used aspotential dividers to prove Ohm’sLaw or to function aspotentiometers, among other things.5F10.10 = Ohm’s Law5F20.33 = Rheostat as potentialdivider; circuit analysis

BriefDescription

EquipmentNeeded

Details

017Demo #


Related Demos

References

Other Uses


YesChecked

Magnets and Strong Magnets

5G10.14DCS #


Area

5G MagneticMaterials

Topic

5G10 MagnetsConcept

magnets, magnetic materials, poles, repel, repulsion,attraction, magnetize,

Keywords

ActiveStatus

56 and bottom ofdemo 337 cart

Location

� basicRating

Different sizes and shapes magnetshelp to show that magnets arealways have two poles; whenmagnets are brought together, thelike magnetic poles repel, and unlikemagnetic poles attract. Placemagnet close to the paper clips andshow that magnet could magnetizemetal things.

BriefDescription

Different shapes and size magnets, Box with paper clips.EquipmentNeeded

Details

9007Demo #


Related Demos

References

Other Uses


YesChecked

MAGNET AND COMPASS ARRAY

5G20.31 / 5H10.11DCS #


Area


Topic

5G20 MagnetDomains andMagnetization

Concept

compass array, magnetic field lines, compass, magnet,pole, materials, clear, overhead, magnetic domains andmagnetization,

Keywords

ActiveStatus

33Location


Rating

Place magnet on the board withcompasses, compass needle linesup with the field. Use marker to drawmagnetic fields lines.5G20.? = Magnetic Domains andMagnetization5H10.? = Magnetic Fields

BriefDescription

Dry erase marker (not included)EquipmentNeeded

Can be used with overheadprojector since compasses arehoused in transparent material.

Details

003Demo #


176Related Demos

References

Other Uses


YesChecked

ELECTROMAGNET

5G20.70DCS #


Area


Topic


Concept

electromagnet, magnetic materials, domains, magnetization,lift, holding force,

Keywords

ActiveStatus

33Location


Rating

This magnet is powered by a batteryin an attached aluminum holder thatyou link by alligator clips to a DCcoil.

BriefDescription

Weight for demo includedEquipmentNeeded

Also included is a plug-in versionDetails

023Demo #


Related Demos

References

Other Uses


YesChecked

PERMALLOY ROD

5G20.55DCS #


Area


Topic


Concept

permalloy rod, magnetic materials, domains, magnetization,earth, field, compass, iron,

Keywords

ActiveStatus

36 rod in PVCpipe attached toshelving structure

Location


Rating

Iron filings (or small strip of iron)stick to a permalloy bar held parallelto the earth's magnetic field but falloff when it is held perpendicular.

Hold a permalloy rod near acompass needle.

BriefDescription

EquipmentNeeded

Permalloy (High Permeability) -- apermalloy rod is not itself magnetic,but if the rod is aligned with apreexisting magnetic field such asthe Earth's or a magnet's, itbecomes magnetic enough to pickup small pieces of iron.

Details

189Demo #


193 177Related Demos

References

Other Uses


YesChecked

FERROFLUID KIT

DCS #


Area


Topic

5G20 MagneticDomains andMagnetization

Concept

ferrofluid, ferro, fluid, kit, iron filings, magnet, magneticmaterials, paramagnetism, diamagnetism, field lines,

Keywords

ActiveStatus

33Location


Rating

Samples of ferrofluid that alignstrongly with an applied magneticfield. The small sealed tube can beused to easily and cleanly show thebehavior of the fluid.

BriefDescription

Could use a strong magnet (9007)EquipmentNeeded

Ferrofluid was originally developedand synthesized under a NASAresearch project as part of the spaceprogram. The fluid is an ultra stablecolloid without agglomeration,precipitation and separation of theparticles. Thus it is capable ofdefying the force of gravity. It is astable colloidal suspension ofsubdomain magnetic particles(Fe3O4 magnetite), approximately110 A in size coated with astabilizing surfactant or dispersingagent which is then dispersed intobase oil. Typical ferrofluid 10^23particles/m^3 opaque to light.

Details

018Demo #

One jar of Ferrofluid is dried out but the others are OK.Suggestions forImprovement

Related Demos

References

Other Uses


YesChecked

MAGNETIC LEVITATION BY DIAMAGNETISM

5G30.? / 5H20.26DCS #


Area


Topic

5G30Paramagnetismand Diamagnetism

Concept

magnetic levitation, levitate, diamagnetism, graphite,carbon, force, diamagnetic

Keywords

ActiveStatus

34Location

goodand engaging buttoo small forlecture hall

Rating

Place small piece of magnetbetween two pieces of graphiteinside of clear part of plastic . Placebig magnet on a top of this cylinderand adjust the distance betweensmall and big magnet. The smallmagnet will float between two layersof graphite.5G30.? = Paramagnetism and

BriefDescription

Three parts plastic cylinder glued to the clear acrylic basewith a white wall, two graphite parts, small and big magnets.

EquipmentNeeded

CAUTION: pinch hazard. The largemagnets are extremely strong.Keep away from metals andsensitive electronic equipment.

You can adjust the distancebetween small and big magnet byscrewing the top of the cylinder.Use this magnetic levitationapparatus with overhead camera.

Details

032Demo #


Related Demos

References

Other Uses


YesChecked

MEISSNER EFFECT

5G50.50DCS #


Area


Topic

5G50 Temperatureand Magnetism

Concept

meissner effect, superconductor, levitation, float, cool,magnetic repulsion, magnetism, temperature, liquidnitrogen,

Keywords

ActiveStatus

36Location

goodand engaging toosmall for lecturehall

Rating

Cool a superconductor and amagnet floats over it due tomagnetic repulsion.

Use the pincers and/or straw tomanipulate the magnet.

Use a video camera!

BriefDescription

Liquid nitrogen will need to be acquired. There is a dewarfor this in the supply shelf.

EquipmentNeeded

Details

185Demo #


Related Demos

References

Other Uses

3/2/2020DateChecked

YesChecked

TWO MAGNETS AND IRON FILINGS

5H10.30DCS #


Area

5H Magnetic Fieldsand Forces

Topic

5H10 MagneticFields

Concept

two magnets and iron filings, magnetic fields, pole,magnetism, force,

Keywords

ActiveStatus

33Location

good butlacks zest

Rating

Sprinkle iron filings on a piece ofpaper over two magnets, whenmagnets are facing to each otherwith attractive poles and withrepulsive poles. You can seedifferent iron filing patterns(magnetic fields patterns) for thesetwo different cases.

BriefDescription

Two cylindrical magnets, Iron filings, Sheet of paper,Overhead camera.

EquipmentNeeded

The magnetic field in thisdemonstration is identified by ironfiling patterns. When iron filings areplaced over a magnets, theybecome induced magnets and lineup with the field.

Details

025Demo #


Related Demos

References

Other Uses


YesChecked

Overhead Magnetism Demo

5H10.30DCS #


Area


Topic

5H10 MagneticFields

Concept

field lines, magnet, magetism, iron filings, overhead,magnetic field, magnetic field lines

Keywords

ActiveStatus

36Location

Rating

A bar magnet is placed in bottomglass pan and the second glass panis placed on top. Iron filings aresprinkled in the top glass pan. Thefilings will align themselves alongthe magnetic field lines of themagnet. Do this on overheadprojector to show the class

BriefDescription

Two glass trays, bar magnet, fine iron filings, overheadprojector

EquipmentNeeded

Details

188Demo #


Related Demos

References

Other Uses

3/2/2020DateChecked

YesChecked

Extra Large Magnet

DCS #


Area


Topic

5H10 MagneticFields

Concept

magnet, large magnet, magnetic fieldKeywords

ActiveStatus

37Location

Rating

Large magnet with large magneticfield.

BriefDescription

EquipmentNeeded

Details

196Demo #


Related Demos

References

Includes small coil not pictured for induced current demosOther Uses

3/2/2020DateChecked

YesChecked

COIL AND COMPASS ARRAY

5H15.10DCS #


Area


Topic

5H15 Fields andCurrents

Concept

compass array, magnetic field lines, compass, magnet,pole, materials, solenoid, toroid, coil, clear, overhead,current, force, wire,

Keywords

ActiveStatus

36Location

goodand engaging

Rating

The compass needles show themagnetic field produced by currentin a coil.

BriefDescription

EquipmentNeeded

Not for use with an overheadprojector, since the compasses arenot in transparent housings. Usethe overhead camera.

A 12DCV @1.2A Power Supply isincluded. DO NOT LEAVEPLUGGED IN FOR EXTENDEDPERIODS OF TIME

Details

176Demo #



References

Other Uses


YesChecked

LENGTH OF SOLENOID

5H15.43DCS #


Area


Topic


Concept

length of solenoid, coil, current, magnetic field lines, force,spacing, turns,

Keywords

ActiveStatus

37Location

good butlacks zest

Rating

A large solenoid is constructed tomake it easy to change the spacingof turns and therefore the length. Amagnetometer or coil can be used toshow field strength.

BriefDescription

Demo 120e shelf 30 for magnetic field sensor, and largepower supply.

EquipmentNeeded

Details

202Demo #


Related Demos

References

Other Uses


YesChecked

COILS AND COMPASSES

5H15.50DCS #


Area


Topic


Concept

magnetic field lines, coil, compass, magnet, pole, materials,solenoid, toroid, clear, overhead, current, force, wire,

Keywords

ActiveStatus

36Location

goodand engaging

Rating

The compass needles show themagnetic field produced by currentin the coils.

BriefDescription

DC power supply.EquipmentNeeded

Can be used with overheadprojector since compasses arehoused in transparent material.

Details

192Demo #


176Related Demos

References

Other Uses


YesChecked

Magnetic Field Kit

5H15.40DCS #


Area


Topic


Concept

magnetic field lines, magnetic field, magnetism, solenoid,magnet, field lines, current

Keywords

ActiveStatus

34Location

good butlacks zest

Rating

several platforms allow you to useiron filings to see the magnetic fieldlines of a solenoid, single loopsolenoid, and a magnet of yourchoosing. Use the lecture camera toshow class.

BriefDescription

Sears battery charger / engine starter power supply.Located on floor on east end of shelf 38

EquipmentNeeded

BE CAREFUL NOT TO GET IRONFILINGS ON MAGNET

Use the large Sears engine starterpower supply on the 12V, 50Asetting.

The straight rod and the single loopwork well. The large solenoid canwork, but appears to have someconductivity problems in some of thewelds, so you may have toexperiment on how to clip the powersupply to make it work.

Details

035Demo #


Related Demos

References

Other Uses

3/4/2020DateChecked

YesChecked

LEVITRON

5H20.25DCS #


Area


Topic

5H20 Forces onMagnets

Concept

levitron, levitation magnets, force, field, spin, rotate, stable,torque, spinning,

Keywords

ActiveStatus

36Location

goodand engaging

Rating

Spin the top on the lifter plate overthe center of the base magnet.Raise the lifter plate approximately1” above the surface of the basemagnet and continue lifting but veryslowly. The top will levitate and willstay in the air for a long time.

BriefDescription

Floating top, Magnetic Levitron Base, Assortment ofAdjustment Weights. Lifter (the clear plastic cover), 2 Shims,Instruction Leaflet, Levitron Physics Leaflet

EquipmentNeeded

Magnetic field produced by the basemagnet should be precisely verticalfor successful levitation. So, it issometimes necessary to insert theshims under one or even two edgesof the base. The instruction leaflettells how to find the right weight forthe top and how to adjust the basemagnet.

Details

180Demo #


Related Demos

References

**This demo is hard to get correctly balanced to work. Thetop tends to spin off wildly once it is “levitating.”

Other Uses


YesChecked

GAUSS ACCELERATOR

5H20.?DCS #


Area


Topic

5H20 Forces onMagnets

Concept

gauss, accelerometer, energy, levels, propulsion, attraction,kinetic, potential, binding, energy, momentum, force, work,

Keywords

ActiveStatus

36Location

goodand engaging

Rating

-Not very visible to large classes-Combines mechanics andmagnetism ideas-Easy to explain and very easy toreproduce

BriefDescription

9 steel ball bearings and the track with magnets.EquipmentNeeded

This is a well known demo.It shows a great manyprinciples such as kineticand potential energy,magnetism, linearmomentum and forces.Consists of 4 magnets and9 steel ball bearings. Thebearings are arranged suchthat as one rolls towards athe magnet it, it is pulledinto another ball bearingbetween it and the magnet.Its momentum is thentransferred through the ballbearing, the magnet, andfinally to another ballbearing on the other side ofthe magnet forcing it tocarry on down the line into

Details

186Demo #


Related Demos

References

Other Uses


YesChecked

MALTESE CROSS

7B35.40DCS #


Area


Topic

5H30 Force onMoving Charges

Concept

Maltese cross, ray, atomic, electron, cathode ray tube, CRT,shadow effect, magnetic deflection, beam, handheld, teslacoil canal rays, positive rays, ions, bending an electronbeam, cathode ray tube, CRT, deflect, magnet, force,moving charge, handheld, tesla coil

Keywords

ActiveStatus

Shelf 36Location

goodand engaging

Rating

A Maltese cross shape partiallyblocks the path of the electrons inthis Cathode Ray Tube. We can seea shadow of Maltese Cross that fallson the tubes screen.

BriefDescription

Handheld Tesla coil (Shelf 36 Demo 178)EquipmentNeeded

Details

330Demo #



References

Other Uses


YesChecked

BENDING AN ELECTRON BEAM - CANAL RAY

5H30.15DCS #


Area


Topic


Concept

canal rays, positive rays, ions, bending an electron beam,cathode ray tube, CRT, deflect, magnet, force, movingcharge, handheld, tesla coil

Keywords

Active but doesnot work well

Status

36Location

goodand engaging

Rating

Perforations in the cathode of thetube permit positive ions to passthrough the cathode, forming “canalrays” or “positive rays”. If you placemagnet close to the tube you canview deflection of the beam.

BriefDescription

Handheld Tesla coil (Shelf 36 Demo 178)EquipmentNeeded

Details

190Demo #


191Related Demos

References

Other Uses


YesChecked

BENDING AN ELECTRON BEAM - CRT #2

5H30.15DCS #


Area


Topic


Concept

bending an electron beam, cathode ray tube, CRT, deflect,magnet, force, moving charge, handheld, tesla coil

Keywords

In StorageStatus

36Location

goodand engaging

Rating

This tube has a metal plate with agap on it and provide green electronbeam. Use a bar magnet to view anelectron beam deflection.

BriefDescription

Cathode ray tube, Tesla Coil (#HS-10), Bar magnet.EquipmentNeeded

Details

191Demo #

Missing bar magnetSuggestions forImprovement

190Related Demos

References

Other Uses


YesChecked

Thomson Tube

5H30.25DCS #


Area


Topic


Concept

Tel-Atomic, Helmholtz, Magnetic Field, Cathode, ElectricField, deflection of electron beam, electron

Keywords

ActiveStatus

Cart for demo 412Location

Rating

In the Thomson tube, the verticaldeflection of a horizontal electronbeam can be observed on afluoresent screen. Such a deflectioncan be generated by a verticalelectric field or by a horizontalmagnetic field that is perpendicularto the direction of motion in thehorizontal plane

BriefDescription

DC power supply in addition to the included 5kV supplyEquipmentNeeded

FRAGILE!! Includes power supplyand complete instructions.

Details

034Demo #


Related Demos

References

Other Uses

3/4/2020DateChecked

YesChecked

TELEVISION SET (rainbow)

5H30.10DCS #


Area


Topic


Concept

TV, television, cathode ray tube, electron beam,Keywords

ActiveStatus

60Location

Rating

Old CRT television set.BriefDescription

MagnetEquipmentNeeded

When approaching with a magnet,the magnetic field lines appear. Ifthe screen retains any memory ofthe magnetic field, spin the largemagnet perpendicular to the axis ofthe cylinder and slowly move it awayfrom the screen. this brings thescreen colors back to normal.

Details

252Demo #


Related Demos

References

Other Uses


YesChecked

Helmholtz Coils

DCS #


Area


Topic


Concept

Helmholtz, electrons, electron, magnetic field, cathode,deflection,

Keywords

ActiveStatus

Floor/CartLocation

Rating

Creates electron beam that can bemoved by the voltage in thehelmholtz coils

BriefDescription

EquipmentNeeded

Plug in both power supplies. It willtake a couple minutes to get abeam. Once the beam is visible (willprobably need the lights off), turn onthe smaller power supply. You canadjust the voltage on the smaller PSto change trajectory.

Details

412Demo #


Thomson TubeRelated Demos

References

Other Uses


YesChecked

Television set (point)

DCS #


Area


Topic


Concept

electron, beam, point, magnetic, field, force, charges, TV,television, cathode ray tube, electron beam,

Keywords

ActiveStatus

60Location

goodand engaging

Rating

When turned on the TV will producea single column of electrons. Use amagnet to deflect the beam.

BriefDescription

MagnetEquipmentNeeded

Details

413Demo #


252Related Demos

References

Other Uses


YesChecked

VIBRATING LAMP FILAMENT IN MAGNETIC FIELD

5H40.23DCS #


Area


Topic

5H40 Force onCurrent in Wires

Concept

vibrating lamp filament in magnetic field, force, current, wire,dancing lightbulb,

Keywords

ActiveStatus

32Location

good butlacks zest

Rating

The filament warps and vibrates inthe presence of the magnetic field.Magnet included.

BriefDescription

EquipmentNeeded

The AC current in the filament isinteracts with the magnetic field. Usewith overhead camera in lecture forall students to see.

Be careful not to let the magnet forthe light bulb near the transformer,especially with strong handheldneodymium magnets.

Demo 401 is the same concept, butcan be operated in either AC or DCmode.

Details

007Demo #


401Related Demos

References

Other Uses


YesChecked

Force on Wire within Magetic Field

5H40.36DCS #


Area


Topic


Concept

current, magnet, magnetic field, field, force, DCKeywords

ActiveStatus

35Location

Rating

A DC current is passes through thecopper wire which hangs aboveseveral magnets. When a currentflows through the wire it swings toone side or the other.

BriefDescription

DC power supply. Use colored “flags” on copper wire tomake movement more visable to class

EquipmentNeeded

Details

306Demo #


Related Demos

References

Other Uses


YesChecked

Disassembled Speaker

5H40.37DCS #


Area


Topic


Concept

speaker, magent, sound, coil, curent, disassembled, currentKeywords

ActiveStatus

32Location

Rating

Show the effects of a magnetic fieldon a current running through a coilof wire.

BriefDescription

signal generator or...

Amplifier (shelf 61) andMusic device (MP3 player, computer)Microphone to RCA cable-in box

EquipmentNeeded

The diaphragm will only producesound in the presence of themagnetic field.

Details

013Demo #


Related Demos

References

Other Uses

3/4/2020DateChecked

YesChecked

Victorian Light Bulb

5H40.23DCS #


Area


Topic


Concept

current, magnetic field, force, DC, AC.Keywords

ActiveStatus

32Location

goodRating

A light bulb filament will move in amagnetic field. The behavior of thefilament, however, depends onwhether an AC or DC current flowsthrough the filament. A DC currentwill cause the filament to pullsideways, while an AC current willcause it to vibrate in a magneticfield.

BriefDescription

Strong magnetEquipmentNeeded

From supplier website: The bulb'sfilament is very fragile. When usingthe bulb in AC mode, we suggestholding a small neodymium magnetabout 1 inch above the top of thebulb for short periods of time.Placing a magnet closer than 1 inchto the AC current bulb could breakthe bulb's filament.

Same concept as demo 007 but thisone has both AC and DC modes.

Details

401Demo #


007Related Demos

References

Other Uses

3/4/2020DateChecked

YesChecked

TORQUE ON CURRENT LOOP

5H50.20DCS #


Area


Topic

5H50 Torques onCoils

Concept

torque on current loop, force, coil, magnetic field,Keywords

ActiveStatus

31Location

goodand engaging

Rating

The current in the inner loopinteracts with the magnetic fieldinduced by the outer loop, causingthe inner loop to rotate.

BriefDescription

Power supply from shelf 61EquipmentNeeded

Use the clips on the inner loop toconnect the batteries. Be careful notto break the string suspending theinner loop. Now connect the profidedcable to a power supply (shelf 61).Crank up the current and press thebutton. The inner loop will rotate. Ifyou press the button repeatedly andtimed correctly, you can get the loopto rotate really fast

Details

408Demo #


Related Demos

References

Other Uses


YesChecked

Compasses

DCS #


Area


Topic

VariousConcept

Keywords

ActiveStatus

37Location

Rating

For use in various demosBriefDescription

EquipmentNeeded

Details

195Demo #


192Related Demos

References

Other Uses


YesChecked

HEAVY WIRE COIL ON SPOOL

DCS #


Area

5J InductanceTopic

5J10 SelfInductance

Concept

Keywords

ActiveStatus

36Location

Rating

Extremely large coil of copper wire.A hole in the center is available toplace a core through the coil ifdesired.

BriefDescription

EquipmentNeeded

This spool is extremely heavy.Details

217Demo #

Place rubber feet on bottom to avoid scratching tables.Suggestions forImprovement

Related Demos

References

Other Uses


YesChecked

INDUCTIVE COIL PENDULUM WITH LAMP

5K10.25DCS #


Area

5K ElectromagneticInduction

Topic

5K10 InducedCurrents andForces

Concept

inductive coil pendulum with lamp, pendulum light,electromagnetic induction, induced current, force, magneticfield, horseshoe magnet, eddy current, damping, dampedoscillations

Keywords

ActiveStatus

Floor/CartLocation

goodand engaging

Rating

Swing pendulum between bigmagnet and the light flashes whenpendulum goes through themagnetic field.

BriefDescription

EquipmentNeeded

With bottom switch set to “Coil”induced currents in the loop willquickly damp the oscillations. Withthe switch set to “Light Bulb” thecurrent can be sent either throughan incandescent bulb or a pair ofLEDs.

It can be tough to see but there aretwo small pulses for theincandescent bulb as the fluxchanges direction in the center ofthe magnet.

Details

347Demo #

Mount LEDs in something permanent (acrylic block or sheetmetal plate)


Related Demos

References

Other Uses


YesChecked

GALVANOMETER

5K10.20DCS #


Area


Topic


Concept

induction coil, magnet, galvanometer, electromagnetic,induced current, force, Faraday,

Keywords

ActiveStatus

36Location

old buteffective

Rating

You can produce electric current byinserting a magnet into a coil of wire.

BriefDescription

Galvanometer with wire coil and magnet.EquipmentNeeded

Use with overhead camera. Note,the included projection meter works,but not as well as the largeprojection meter and demo 177.

Details

187Demo #


177Related Demos

References

Other Uses


YesChecked

INDUCTIVE COIL WITH LAMP

5K10.25DCS #


Area


Topic


Concept

inductive coil with lamp, variable turn coil, electromagneticinduction, induced current, force, core,

Keywords

ActiveStatus

36Location

goodand engaging

Rating

The light bulb and the solenoid arein series. Placing an iron-core insidea solenoid will increase theinductance of the solenoid. Whenthis happens the energy in themagnetic field being created is usedto magnetize the iron therebyincreasing the drain on the currentand dimming the light bulb.

BriefDescription

If light bulb is out, use only a 100W light bulbEquipmentNeeded

Details

193Demo #


Related Demos

References

Other Uses


YesChecked

MAGNETIC INDUCTION BALANCE

5K10.19DCS #


Area


Topic


Concept

magnetic induction balance, induced current, force,electromagnetic induction,

Keywords

ActiveStatus

41Location

good butlacks zest

Rating

Balance a length of string by varyingmagnetic field and current flowingperpendicular to it.

BriefDescription

2 DC power supplies (shelf 61). There is a wiring setupincluded in the box so that only 1 P.S. is needed, however,this method reduces the amount of mass that can bebalanced.

Precise balance to measure mass of string

EquipmentNeeded

Vary the mass hanging off thethreaded end of the balance arm tobalance the magnetic force on theend in the solenoid.

Detailed experimental procedureand theory in box.

Details

232Demo #


Related Demos

References

Other Uses


YesChecked

EARTH FLIP COIL

5K10.60DCS #


Area


Topic


Concept

earth flip coil, galvanometer, magnetic field, electromagneticinduction, induced current, force,

Keywords

ActiveStatus

38Location

goodand engaging

Rating

Flip the standard Earth coil attachedto a galvanometer. *Needs asensitive meter

BriefDescription

Sensitive galvanometer (contains sensitive ammeter)EquipmentNeeded

The change in magnetic flux fromthe Earth’s magnetic field throughthe coil as it flips produces a voltageand current which can be measuredvia the galvanometer

Details

211Demo #


Related Demos

References

Other Uses


YesChecked

Faraday’s Flashlight

5K10.25DCS #


Area


Topic


Concept

magnet, electromagnet, shake, Faraday’s Law of Induction,capacitor, current, induced current, flashlight

Keywords

ActiveStatus

33Location

good butlacks zest

Rating

When you shake the flash light astrong magnet inside will slidethrough a coil of copper wiregenerating a current which is thenstored in a capacitor to power theflashlight.

BriefDescription

-No set-up-No batteries-Great explanation of induction-Handy if there is a power outage during class

EquipmentNeeded

SHAKE THE FLASHLIGHTHORIZONTALLY`

Details

359Demo #


Related Demos

References

Other Uses


YesChecked

Electromagnetic Induction

DCS #


Area


Topic


Concept

solenoid, magnetism, projection meter, electro magneticinduction

Keywords

ActiveStatus

36Location

goodand engaging

Rating

Move strong magnet in and out ofsolenoid to induce a current in thewire of the solenoid

BriefDescription

projection meter (Demo 119, Shelf 14)strong magnet (in box)

EquipmentNeeded

Details

177Demo #



References

Other Uses


YesChecked

WIRE COIL

DCS #


Area


Topic


Concept

wire, coil, loop, inductance, induction, induced emf,electromotive force, self,

Keywords

ActiveStatus

36 (on demo 217)Location

Rating

Wire loop for use in inductiondemos.

BriefDescription

EquipmentNeeded

Details

216Demo #


Related Demos

References

Other Uses

3/4/2020DateChecked

YesChecked

EDDY CURRENT PENDULUM

5K20.10DCS #


Area


Topic

5K20 EddyCurrents

Concept

Eddy current pendulum, Lenz’ law, damping,electromagnetic induction, magnetic brake, magneticbraking, horseshoe magnet,

Keywords

ActiveStatus

Floor/CartLocation

goodand engaging

Rating

Pendulum motion is damped byeddy currents.

BriefDescription

EquipmentNeeded

Pendulum motion is heavily dampedwith solid plate, but is not dampedwhen the sliced plate passesthrough the magnet.

Also includes a large cutaway eddytube and strong magnet.

For best results using the eddy tube,place the included 50g mass on topof the magnets while falling.

Details

337Demo #


206Related Demos

References

Other Uses


YesChecked

RING SHOOTER

5K20.30DCS #


Area


Topic

5K20 EddyCurrents

Concept

ring shooter, jumping ring, electromagnetic induction, Eddycurrent, magnetic field, current,

Keywords

ActiveStatus

Floor/CartLocation

goodand engaging

Rating

A solid aluminum ring on the verticaltransformer jumps while a split ringdoes not.

BriefDescription

Ring shooter, solid ring, ring with small break (all on cart)EquipmentNeeded

Very powerful, use only in roomswith extremely high ceilings and nolights directly above.

DO NOT HOLD BUTTON FORLONGER THAN 1 SECOND!!!!

Details

343Demo #


Related Demos

References

Other Uses


YesChecked

EDDY CURRENT DAMPING ROTOR

5K20.23DCS #


Area


Topic

5K20 EddyCurrents

Concept

Eddy current damping rotor, induction disk, electromagneticinduction, force, spinning, damping, feel,

Keywords

In StorageStatus

37Location

good butlacks zest

Rating

Turn the rotor by hand when thebattery is connected and feel theeffect of the damping.

BriefDescription

6V battery, alligator clips.EquipmentNeeded

Details

203Demo #

Could be mounted more securely onto more boards to makea sturdy base


Related Demos

References

Other Uses

3/4/2020DateChecked

NoChecked

INDUCTION DISK

5K20.22 / 5K20.44DCS #


Area


Topic

5K20 EddyCurrents

Concept

induction disk, electromagnetic induction, Eddy currents,force, spinning, aluminum, magnet, slit, magnetic braking,Arago’s disk, brake,

Keywords

ActiveStatus

37Location

goodand engaging

Rating

A metal disk that has been balancedon a pin sized tip to eliminatefriction. Applying a spinningmagnetic field to this starts the diskspinning via the induction currentformed on the disk. Strong magnetswill demonstrate magnetic braking.

BriefDescription

EquipmentNeeded

Hold the magnet-drill assemblyclose to the balanced disc andoperate the drill. The magnet exertsa torque (via eddy currents) on thedisc, causing it to spin the samedirection as the magnet.Demonstrates one method used inspeedometers. The spinningmagnetic field is created with astrong magnet attached to the endof a Dremel. The disk can bebrought up to high speed very veryquickly. There is also a second diskmade of the same material that hasslits cut along it to eliminate eddycurrents from forming. For bestresults, remove the aluminum discfrom the magnet, oil the base at thecontact point, and hold the magnetvery close to the disc.

Details

197Demo #


Related Demos

References

Other Uses

3/4/2020DateChecked

YesChecked

MAGNETS IN EDDY TUBES

5K20.25DCS #


Area


Topic

5K20 EddyCurrents

Concept

magnets, eddy currents, damping, Lenz’s law, copper,aluminum, magnetism, tube, rod, pipe,

Keywords

ActiveStatus

Floor/CartLocation

Rating

Drop magnets and non-magnetsdown copper or aluminum tubes,rods, or rails. The magnets fall moreslowly due to magnetic dampingcaused by induced eddy currents.

BriefDescription

EquipmentNeeded

A larger eddy tube is on the cart withthe eddy pendulum.

Details

206Demo #

.Suggestions forImprovement

337Related Demos

References

Very large cutaway eddy tube on cart with eddy currentpendulum

Other Uses


YesChecked

Radio Transformer

DCS #


Area


Topic

5K30 TransformersConcept

radio, signal, transmitter, mutual, inductance, transformer,iron core

Keywords

ActiveStatus

37Location

Rating

Use coils with varying turns and aniron core to explore the currents andvoltages in transformers.

BriefDescription

Radio, amplifier, 2 sets of coils, iron transformer core (allincluded)

EquipmentNeeded

Attach one coil to headphone out ofradio and one coil to input ofamplifier. Moving the coils neareach other will allow the signal topass from one to the other. Trydifferent combinations of turns oneach end and observe the effect onvolume from the amplifier. Now tryusing the iron transformer core bypassing it through both coils (evenon opposite sides) and open/closethe loop on the transformer core.Observe effect on volume.

Details

194Demo #

Needs new batteriesSuggestions forImprovement

Related Demos

References

Also 5K10 induced currents and forces.Other Uses


YesChecked

HAND-CRANKED GENERATOR

5K40.80DCS #


Area


Topic

5K40 Motors andGenerators

Concept

hand-cranked generator, hand cranked, electromagneticinduction, electric energy, transfer, kinetic, work,

Keywords

ActiveStatus

37Location

old buteffective

Rating

A simple, hand-cranked generatorthat lights a small light bulb

BriefDescription

GeneratorEquipmentNeeded

Details

201Demo #


301Related Demos

References

Other Uses


YesChecked

INDUCTION MOTOR

5K40.50DCS #


Area


Topic


Concept

induction motor, two coils, 90 degrees, phase,electromagnetic induction, pop can motor, horseshoemagnet,

Keywords

ActiveStatus

37Location

good andengaging

Rating

Current through two internal coils,90 degrees out of phase with eachother, turn the disk.

BriefDescription

EquipmentNeeded

Not the best for large lecture hall,but works good.

Details

200Demo #


Related Demos

References

Other Uses


YesChecked

DC MOTOR FOR BIG MAGNET

5K40.10DCS #


Area


Topic


Concept

DC motor for big magnet, electromagnetic induction,horseshoe magnet,

Keywords

In StorageStatus

StorageLocation

good butlacks zest

Rating

DC current supplied to the brusheswill make the motor turn when itsplaced between the poles of astrong magnet.

BriefDescription

EquipmentNeeded

Details

319Demo #


Related Demos

References

Other Uses


YesChecked

AC/DC MOTORS

5K40.40DCS #


Area


Topic


Concept

AC/DC motors, electromagnetic induction,Keywords

ActiveStatus

37Location

good butlacks zest

Rating

One of these units has a regularmagnet, the other has a coil whichproduces an induced magnetic fieldwhen connected to a battery. Ineither case, a DC source connectedto the smaller coil of the motorproduces AC current as that coilrotates through the field.

BriefDescription

Motor generators, DC power supply or 6V cell batteries,leads, galvanometer set to measure AC voltage.

EquipmentNeeded

DC power supply offers variablespeed.

Not the best for lecture.

Details

199Demo #


Related Demos

References

Other Uses


YesChecked

HAND-CRANKED GENERATOR

5K40.80DCS #


Area


Topic


Concept

hand-cranked generator, hand cranked, electromagneticinduction, electric energy, transfer, kinetic, work,

Keywords

ActiveStatus

37Location

good butlacks zest

Rating

A simple, hand-cranked generatorthat lights a string of LED Christmaslights.

BriefDescription

EquipmentNeeded

Details

301Demo #


201Related Demos

References

Other Uses


YesChecked

LIGHT BULB WITH TESLA COIL

5N20.50DCS #


Area

5NElectromagneticRadiation

Topic

5N20 Tesla CoilConcept

light bulb with Tesla coil (Shelf 36), handheld, Tesla coil,induction coil, electromagnetic radiation, high frequency,lightbulb

Keywords

ActiveStatus

36Location

goodand engaging

Rating

300 W light bulb in the small stand.The Tesla Coil can be used to “light”up the bulb.

BriefDescription

Plastic stand, 300 W light bulb, small Tesla Coil #HS-10.EquipmentNeeded

Please handle stand with bulb in itwith care. To avoid damage to TeslaCoil: Do NOT use adjustment screwat end of coil as an ON/OF switch.Use the push button on the side!Precautions - shock hazard!

Not the best for large lecture hall.

Details

179Demo #


178Related Demos

References

Other Uses


YesChecked

DC INDUCTION SPARK COIL

5N20.13DCS #


Area


Topic


DC induction spark coil, electromagnetic radiation, Teslacoil, voltage

Keywords

ActiveStatus

37Location

goodand engaging

Rating

A 12V power pack is connected tothe screw terminals. The low 12 voltoutput from the power pack isconverted to an extremely highvoltage at the spikes on top.

BriefDescription

Nothing is needed. The power pack can be easily removedand two 6 volt batteries can be used if they are available.

EquipmentNeeded

Details

204Demo #


Related Demos

References

Other Uses


YesChecked

HANDHELD TESLA COIL

5N20.10DCS #


Area


Topic


handheld, Tesla coil, induction coil, electromagneticradiation, high frequency,

Keywords

ActiveStatus

36Location

goodand engaging

Rating

This is just what the name implies, ahand held Tesla coil.

BriefDescription

Search Demo database for keyword handheld to find demosthat use this device

EquipmentNeeded

The tip of the coil slides over the endof the coil very easily. the knob atthe bottom adjusts the voltageproduced at the tip. This knobshould NOT be used to turn the coilon and off as it will damage the coilif adjusted while running. The on/offswitch is a rather inconspicuoussilver button on the side. It makesno clicking sound or any otherindication that is has been turnedon. It also functions as the offswitch. It is recommended that theinstructor take time before class tofamiliarize themselves with thebutton.

Details

178Demo #


179Related Demos

References

Use to light florescent light bulbs at various distancesOther Uses


YesChecked

Musical Tesla Coil

DCS #


Area


Topic


Keywords

MissingStatus

Floor/CartLocation

Rating

Tesla coil with both manual andMIDI input spark adjustment.

BriefDescription

EquipmentNeeded

Details

384Demo #


Related Demos

References

Other Uses


YesChecked

MICROWAVE TRANSMITTER AND RECEIVER

5N30.30DCS #


Area


Topic

5N30ElectromagneticSpectrum

Concept

microwave transmitter and receiver, electromagneticradiation, spectrum, wave,

Keywords

ActiveStatus

38Location

goodand engaging

Rating

Useful for standing wavesexperiments. Use a mirror or metalsheets to show reflection, standingwave patterns, interference, orpolarization.

BriefDescription

EquipmentNeeded

Details

198Demo #


Related Demos

References

Other Uses


YesChecked

Near Infrared Detector

DCS #


Area


Topic

5N30ElectromagneticSpectrum

Concept

infrared, remote control, IR, filter, reflection, absorption,pulse, near infrared, radio

Keywords

Needs RepairStatus

44Location

goodand engaging

Rating

Surrounding lights and the LEDfound on the radio are detected bythe solar cell on the amplfier and thelight signal is translated to sound.The solar cell can also detect nearIR from the remote controls.

BriefDescription

check batteries, If IR filter is missing, talk to Brian JonesEquipmentNeeded

A 60 Hz hum from the fluorescentlights can be heard. The radio canbe heard in a simular way throughlight. the radio sends signals to theLED which pulses rapidly. Thesolarcell detects this and it can beheard on the amplifier.

Use the infrared filter to block thesignal from the remote controls andother light sources

Detailed instructions in box.

Details

247Demo #

Needs new batteries (AA and AAA), missing amplifier,missing IR filter


Related Demos

References

Other Uses

5/1/2015DateChecked

YesChecked

HOLLOW CONDUCTING SPHERES

5A40.? / 5B30.?DCS #


Area

variousTopic

variousConcept

hollow conducting spheres, globes, induced charge,electrostatic potential, Van de Graaff, Wimshurst machine,

Keywords

ActiveStatus

27Location

old buteffective

Rating

Hollow, conducting balls will pick upcharge from a Van de Graaffgenerator.5A40.? = Induced Charge5B30.? = Electrostatic Potential

BriefDescription

EquipmentNeeded

Details

011Demo #


182Related Demos

References

Other Uses


YesChecked

Eye Patches

DCS #

6 OpticsArea

Topic

Concept

Keywords

MissingStatus

42Location

Rating

BriefDescription

EquipmentNeeded

Details

238Demo #


Related Demos

References

Other Uses


YesChecked

Mega Huge UV Spotlight

DCS #

6 OpticsArea

Topic

Concept

UV, Ultra Violet, Spectrum, light, Fluorescence, black light,blacklight, ultraviolet

Keywords

ActiveStatus

44Location

goodand engaging

Rating

An excellent demonstration of UVlight and fluorescence. This is a verybright light that is visible to the entireclass. The spotlight is on a rotatingstand to allow the user to direct thebeam of UV light.

BriefDescription

Fluorescent items (dish soap, orange, highlighters etc.)EquipmentNeeded

ALLOW THE LIGHT TO WARM UPFOR 2-3 MINUTES. Its worth thewait!

Details

254Demo #


Related Demos

References

Other Uses

5/1/2015DateChecked

YesChecked

15 Gallon Tank

DCS #

6 OpticsArea

Topic

Concept

Water, tank, fish, fishtank,Keywords

ActiveStatus

43Location

basicmeasurement

Rating

15 gallon glass aquarium tank fordemos like bouyancy, displacmentand refraction

BriefDescription

Depends on experimentEquipmentNeeded

Details

406Demo #


212Related Demos

References

Other Uses


YesChecked

Historical Lenses

DCS #

6 OpticsArea

6A GeometricalOptics

Topic

Concept

Old, lens, historical, vintageKeywords

ActiveStatus

42Location

Rating

Many large old lenses.BriefDescription

EquipmentNeeded

Details

240Demo #


Related Demos

References

Other Uses


YesChecked

TRANSFORMER FOR BLACKBOARD OPTICS KIT

DCS #

6 OpticsArea


Topic

Concept

Transformer, power supply, 12V, blackboard optics.Keywords

ActiveStatus

41Location

Rating

Power supply for lights in blackboardoptics kit (Demo 235)

BriefDescription

EquipmentNeeded

Details

237Demo #


235Related Demos

References

Other Uses


YesChecked

ANGLED MIRRORS

6A10.40DCS #

6 OpticsArea


Topic

6A10 Reflectionfrom Flat Surfaces

Concept

angled mirror, reflection, geometrical optics, hinge, vertical,multiple, image, flat surface,

Keywords

Needs a lot ofTLC

Status

39Location

good butlacks zest

Rating

Angled mirrors and protractor boardto determine angle between mirrors.

BriefDescription

EquipmentNeeded

Details

209Demo #

Mirrors should be replaced.Most are damaged to some extent


Related Demos

References

Other Uses


YesChecked

Small Mirrors

DCS #

6 OpticsArea


Topic

6A10 Reflectionfrom Flat Surfaces

Concept

small, mirror, student interactiveKeywords

ActiveStatus

41Location

Rating

Many (order ~100) small mirrors foruse with various demos.

BriefDescription

EquipmentNeeded

Details

236Demo #


Related Demos

References

Other Uses


YesChecked

PHANTOM LIGHT BULB

6A20.30DCS #

6 OpticsArea


Topic

6A20 Reflectionfrom CurvedSurfaces

Concept

phantom light bulb, geometrical optics, concave, curved,mirror, reflection, parabolic, focal point, focus, image,

Keywords

ActiveStatus

27Location

goodand engaging

Rating

A hidden bulb at the center ofcurvature of a parabolic mirrorappears up top in the empty lightsocket.

BriefDescription

EquipmentNeeded

To align, put the two corners of themetal base up to the two screws inthe board (red circles in pic). Do nottransport while the mirror is up

Details

342Demo #


Related Demos

References

Other Uses


YesChecked

Uber-Big Convex and Concave Mirrors

6A20.45DCS #

6 OpticsArea


Topic

6A20 Reflectionfrom CurvedSurfaces

Concept

mirror, large, concave, convex, giant, converging, diverging,reflecting.

Keywords

ActiveStatus

27Location

Rating

Extremely large concave andconvex mirrors

BriefDescription

EquipmentNeeded

Take care when using the concavemirror in direct sunlight or otherbright light.

Details

362, 363Demo #


Related Demos

References

Other Uses


YesChecked

PRISMS AND GLASS PLATES

6A40.?DCS #

6 OpticsArea


Topic

6A40 RefractiveIndex

Concept

prism, glass plate, refraction, index of refraction, reflection,dispersion, color, light, thin film interference, geometricaloptics,

Keywords

ActiveStatus

40Location

good butlacks zest

Rating

Miscellaneous prisms and glassplates.

BriefDescription

EquipmentNeeded

Details

233Demo #

Large glass prism is broken.Suggestions forImprovement

Related Demos

References

Other Uses


YesChecked

INTERFERENCE PLATES

6A40.20DCS #

6 OpticsArea


Topic


Concept

interference plate, geometrical optics, index of refraction,thin film, wedge fringes,

Keywords

ActiveStatus

46Location

good butlacks zest

Rating

Use these glass plates to view the“wedge fringes” of interference.Works well viewing the reflection ofa diffuser that’s back lit by thesodium lamp.

BriefDescription

Sodium lamp (with diffuser) shelf 46. Lens cleaning cloths(included)

EquipmentNeeded

Allow sodium lamp to warm up for atleast 5 minutes. Fit diffuser oversodium lamp and clean glass plateswith lens wipes. To view fringes, theplates may actually have to besqueezed together slightly to make anarrow enough gap to view wedgeinterference fringes.

Details

263Demo #


269Related Demos

References

Other Uses

5/1/2015DateChecked

YesChecked

FISH EYES

6A40.?DCS #

6 OpticsArea


Topic


Concept

fish eyes, optics, refraction, refractive index, index ofrefraction, magnification, bigger, smaller, globes, image,spheres, water, balls,

Keywords

ActiveStatus

39Location

good butlacks zest

Rating

Compare four scenarios where theobject is always inside the container:• container and object both in air• container in air, object in water• container in water, object in air• container and object both in water

BriefDescription

Large water tank.EquipmentNeeded

Details

212Demo #


406Related Demos

References

Demo 406 is a fish tank which is large enough to submergethese fish bowls in.

Other Uses


YesChecked

Glass in Wesson Oil

6A40.30DCS #

6 OpticsArea


Topic


Concept

Index of refraction, glass, wesson, oil, invisibleKeywords

ActiveStatus

40Location

Rating

Wesson oil has nearly the sameindex of refraction (n) as Pyrex glass(n = 1.474). No reflection will occurat the boundary and there will be norefraction of the transmitted light.The object will be invisible.

BriefDescription

Pyrex objects- in boxWesson oil- in box

EquipmentNeeded

There are several Pyrex objects thatcan be immersed in the vesselcontaining pure Wesson vegetableoil. It is suggested you only partlysubmerge the objects because it canbe difficult and messy to remove anobject that has fallen into theWesson oil vessel.

Please wipe oil from the glasspieces immediately after use. Whenleft alone, the oil can form a residuethat is very difficult to remove.Residue can be removed with acloth and 91% isopropyl alcohol.

Details

224Demo #


Related Demos

References

Other Uses


YesChecked

WATER LENSES

DCS #

6 OpticsArea


Topic


Concept

lens, water, underwater, air, index of refractionKeywords

ActiveStatus

40Location

Rating

Two lenses (full of air) on sticks thatallow submersion in a beaker ofwater.

One lens that can be filled withwater or other liquids.

BriefDescription

Beaker half full of water; Overhead camera (optional)EquipmentNeeded

Fill a large beaker 1/2 full of water.Place on top of a laminated sudokupuzzle or something similar. Placethe concave lens in the water andwatch the puzzle get larger. Placethe convex lens in the water andwatch the puzzle shrink. Use theoverhead camera to show studentsin lecture. Fill the concave lens withthe hole cut in it with water (or otherliquids).

Details

219Demo #


Related Demos

References

Other Uses


YesChecked

PINE-SOL YARD GLASS

6A44.21DCS #

6 OpticsArea


Topic

6A44 Total InternalReflection

Concept

laser, pine-sol, pine sol, tall glass, yard glass, geometricaloptics, index of refraction, total internal reflection, fiber optic,

Keywords

ActiveStatus

35Location

goodand engaging

Rating

Shows total internal reflection oflaser beam inside the tall glass filedwith Pine-Sol.

BriefDescription

Stand with a tall glass, bottle of Pine-Sol, laser.EquipmentNeeded

Please handle tall glass with care.Try to avoid bubbles when you fillglass with Pine-Sol.

The green laser pointer seems towork best because the human eyesensitivity is peaked in the greenregion, but a HeNe laser works finein a dark room.

Details

336Demo #


Related Demos

References

Other Uses


YesChecked

WATER STREAM LIGHT PIPE

6A44.45DCS #

6 OpticsArea


Topic


Concept

water stream light pipe, water flow beam, total internalreflection, index, refraction, geometrical optics, laser, fiberoptics, lightpipe

Keywords

ActiveStatus

44Location

goodand engaging

Rating

As a stream of water flows from ahole in this apparatus, a laser beamtravels along the length of thewater’s curve, bouncing from side toside within the stream.

BriefDescription

Plastic jug with a cap, pre-drilled with two lined-up holes.Helium Neon Gas Laser (shelf 45).Clamp stand for laserContainer for water to flow into (Could use a 5gal bucketfrom shelf 7 and pour off the table into bucket)

EquipmentNeeded

The laser beam is passed trough aglass plate securely mounted on theside of the jug.

Details

248Demo #


Related Demos

References

Other Uses


YesChecked

Pine-Sol with Spherical Beaker

6A44.22DCS #

6 OpticsArea


Topic


Concept

pine-sol, pine sol, pinesol, spherical beaker, round, laser,geometrical optics, total internal reflection, index, refraction,fiber optics,

Keywords

ActiveStatus

40Location

good andengaging

Rating

BriefDescription

pine-sol, laser, lab stand supportsEquipmentNeeded

Does not showcase total internalreflection as well as the Pine SolYard Glass

Details

226Demo #


336Related Demos

References

Other Uses


YesChecked

ULEXITE “TELEVISION STONE”

6A44.41DCS #

6 OpticsArea


Topic


Concept

ulexite, television stone, crystal, fiber optic, geometricaloptics, total internal reflection, light pipe,

Keywords

ActiveStatus

41Location

goodand engaging notgood for lecturehall

Rating

When the polished bottom surface ofthis stone is placed upon a printedpage, the words can be read on thetop surface, giving the appearanceof television screen.

BriefDescription

Piece of Ulexite, printed page, overhead camera.EquipmentNeeded

Ulexite (mineral specimen ofhydrated sodium calcium borate) iscomposed of thousands of fibrousfragments which transmit light.

Also included are two pieces ofbirefringent calcite.

Details

231Demo #


Calcite (in box)Related Demos

References

Other Uses


YesChecked

FIBER OPTICS KIT

6A44.40DCS #

6 OpticsArea


Topic


Concept

fiber optics, kit, cable, total internal reflection, critical angle,light pipe, communications,

Keywords

ActiveStatus

44Location

good butlacks zest

Rating

Various fiber optic materials to shinea light through. The large one at thetop of this picture works best forshowing large groups more easily.

BriefDescription

light source (flashlight or laser)EquipmentNeeded

Details

250Demo #


Related Demos

References

Other Uses


YesChecked

Large Lenses

DCS #

6 OpticsArea


Topic

6A65 Thick LensConcept

large, lens, convex, concave, thickKeywords

ActiveStatus

42Location

Rating

Very large lenses.BriefDescription

EquipmentNeeded

Details

239Demo #


Related Demos

References

Other Uses


YesChecked

Hand Lenses - Magnifying Glasses

DCS #

6 OpticsArea


Topic

6A70 OpticalInstruments

Concept

lens, converging, magnifying glass, student interactiveKeywords

ActiveStatus

40Location

Rating

Many small, inexpensive magnifyingglasses

BriefDescription

EquipmentNeeded

Details

220Demo #


Related Demos

References

Other Uses


YesChecked

MIRRORS

6A10.15 / 6A20.45DCS #

6 OpticsArea


Topic

variousConcept

mirror, reflection, image, plane, curved, concave,Keywords

ActiveStatus

39Location

�� very old buteffective

Rating

Several mirrors for various demos.BriefDescription

EquipmentNeeded

Extremely large concave andconvex mirrors are available indemo 362-3 on shelf 27

Details

208Demo #

Some mirrors are scratched, warped, etc.Suggestions forImprovement

362,363Related Demos

References

Other Uses


YesChecked

LENSES

6A60.? / 6A65.?DCS #

6 OpticsArea


Topic

variousConcept

lens, lenses, thin, thick, refraction, index, convex, concave,image, real, virtual, geometrical optics,

Keywords

ActiveStatus

39Location

good butlacks zest

Rating

Thin and thick, concave and convexlenses.

BriefDescription

EquipmentNeeded

Some lenses are mounted in tabletennis paddles and some are loosefor mounting in the included mount.

Details

210Demo #


Related Demos

References

Other Uses


YesChecked

GROUND GLASS SCREEN

6A60.? / 6A65.? /6A70.?

DCS #

6 OpticsArea


Topic

variousConcept

ground glass screen, image, virtual, picture, telescope,projection, projected,

Keywords

ActiveStatus

39Location

staticRating

Various uses.BriefDescription

EquipmentNeeded

Can be used to show coiled coilfilament of demo 207.

Details

214Demo #


207Related Demos

References

Other Uses


YesChecked

BLACKBOARD OPTICS KIT

6 (optics; manycategories)

DCS #

6 OpticsArea


Topic

variousConcept

thin, lens, straight, curved, mirror, ray box, refraction,reflection, black board, chalkboard

Keywords

ActiveStatus

41Location

good butlacks zest

Rating

A demo kit showcasing a variety ofdifferent optical phenomena. It isbasically a big version of a ray box(with lenses, mirrors, etc.) that willmount with magnets to an old styleblackboard.

BriefDescription

Wooden case labelled “Blackboard Optics Kit”

AND

Transformer to power the light sources (it is stored with thewooden case)

EquipmentNeeded

This kit is an excellent demo formany optical phenomena, and iseasily seen even in large lecturecourses.

The instruction book contains a listof equipment, how to use it andsuggested demos.

Do not forget the transformer thatpowers the ray sources. It isstored with the wooden case. Nowires or connectors are necessary;there are banana plug lead wires onthe light sources.

Details

235Demo #


237Related Demos

References

Other Uses


YesChecked

Cornell Plate

DCS #

6 OpticsArea

6C DiffractionTopic

6C20 Diffractionaround Objects

Concept

optics, diffraction, interference, laser, cornell plateKeywords

ActiveStatus

44Location

Rating

Cornell plate to show different laserdiffraction patterns.

BriefDescription

Green laser (shelf 45)EquipmentNeeded

The Cornell plate stand allows theplate to be adjusted vertically andhorizontally so the laser beam canmove easily from on set of slits toanother. The stand can be set up inthe back of the large lecture hall toproject on the front screen. It canalso be set up on your desk but thestand should be at a greater angle

Can be used with the He-Ne laserson shelf 45 but a different aimingmechanism is needed for the largerlasers.

Schematics of slits are included inthe box

Details

245Demo #


261Related Demos

References

Other Uses


YesChecked

OPTICAL SET OF SLIDES

6C10.10 / 6C10.20 /6D10.10 / 6D20.?

DCS #

6 OpticsArea

6C DiffractionTopic

variousConcept

optical set of slides, diffraction, interference, single slit,double slit, grating, pinhole, Cornell plate,

Keywords

ActiveStatus

40Location

goodand engaging

Rating

This optical set (gratings, slits,meshes, polarizing filters, hologram)lets us observe the diffraction andinterference effects of light, theeffect of polarization, demonstratespectra.

BriefDescription

Optical set of different slides, source of light.EquipmentNeeded

Mercury and sodium light sourcescould be used with this optical set.

Details

229Demo #


Related Demos

References

Other Uses


YesChecked

INTERFERENCE TRANSPARENCY MODEL

6D10.05 / 3B50.40DCS #

6 OpticsArea

6D InterferenceTopic

6D10 Interferencefrom Two Sources

Concept

interference transparency model, two sources, wave motion,diffraction, Moire pattern, overhead

Keywords

ActiveStatus

41Location

staticRating

This set of transparent plastic plateswith concentric circles demonstrateshow light interference is created.Concentric circles represent wave-fronts.

BriefDescription

Set of transparent plastic plates with concentric circles,overhead projector or camera.

EquipmentNeeded

Move the centers of the two platesrelative to one another and dramaticinterference patterns appear.3B50.? = Wave motion; interferenceand diffraction; Moire pattern,

Two sets of straight lines(wavefronts) with different spacingcan be used to demonstrate phaseand group velocity concepts.

For use with overhead projector.

Details

230Demo #


Related Demos

References

Other Uses


YesChecked

REFLECTION GRATING

6D20.?DCS #

6 OpticsArea


6D20 GratingsConcept

reflection, grating, interference, spectrum, white light,project, mercury, sodium, lamp,

Keywords

ActiveStatus

45Location

goodand engaging

Rating

Step 3m away from the source oflight with this grating and you willsee spectrum of light on the wall oron the screen.

BriefDescription

Reflection grating, source of light (mercury lamp, sodiumlamp)

EquipmentNeeded

Sodium (nearly monochromatic)gives one diffraction pattern.

Mercury clearly resolves green andorange emission lines.

Details

258Demo #


269,270Related Demos

References

Other Uses


YesChecked

Overhead Projector

6D20.20 /DCS #

6 OpticsArea


6D20 GratingsConcept

projector with diffraction grating, interference, rainbow, whitelight, slit, spectrum,

Keywords

ActiveStatus

Floor/CartLocation

goodand engaging

Rating

Overhead projector fortransparencies, polarization,diffraction, etc.

BriefDescription

Projector with a diffraction grating mounted in to it, Sheet ofcard board with a gap in the middle of it.

EquipmentNeeded

The backlight on the overheadprojector makes it well-suited forpolarization demos.

Details

349Demo #

No diffraction grating or cardboard, just an overheadprojector. Shelf location is precarious. Bulb is burnt out


053Related Demos

References

Other Uses

5/8/2015DateChecked

YesChecked

THIN FILM INTERFERENCE DEMO

6D30.20DCS #

6 OpticsArea


6D30 Thin FilmsConcept

thin, film, interference, soap, projectorKeywords

ActiveStatus

40Location

goodand engaging

Rating

This demo pojects an interferencepattern from reflection off a soap filmonto a screen. Suitable for largelecture courses and smaller classes.There are setup instructions in thebox.

BriefDescription

Projector plateform unit (in box)Soap solution (in box)Film canister for soap solution (in box)

EquipmentNeeded

There are instructions in the box.The demo has been designed to bereliable and easy to set up, thoughsome practice time with theequipment before debuting in classis recommended.

This is a good demo for entry levelstudents (and probably for those inhigher level courses as well).

The power cord for the projectorgets quite hot, so make sure that it iswell ventilated.

Details

218Demo #


Related Demos

References

Other Uses


YesChecked

ADDITIVE COLOR MIXING LIGHTS #1

6F10.10DCS #

6 OpticsArea

6F ColorTopic

6F10 Synthesisand Analysis ofColor

Concept

additive color mixing lights, synthesis, analysis, eye, red,green, blue, primary, colored shadows,

Keywords

ActiveStatus

46Location

goodand engaging

Rating

This board with different colors lightbulbs illustrates the results ofblending the primary colors of light.Insert an object between the lightsand the screen to observe coloredshadows.

BriefDescription

Board with four light bulbs (red, blue, green and white).

White screen

Object to block one color at a time.

EquipmentNeeded

The pull chains allow you to turn onindividual combinations of lights. Inthis manner you can show whichlights need to be on to producethese magenta, yellow, and cyanshadows.

Details

264Demo #


268Related Demos

References

Other Uses


YesChecked

ADDITIVE COLOR MIXING LIGHTS #2

6F10.10DCS #

6 OpticsArea

6F ColorTopic


Concept

additive color mixing lights, synthesis, analysis, eye, red,green, blue, primary, colored shadows,

Keywords

ActiveStatus

46Location

goodand engaging

Rating

This board with different colors lightbulbs illustrates the results ofblending the primary colors of light.Insert an object between the lightsand the screen to observe coloredshadows.

BriefDescription

Board with three different colors of light (red, blue, green),power supply (18V, 3A on shelf 61), screen,

EquipmentNeeded

Details

268Demo #

Does not work. Burnt out bulb(s)? Is there avoltage/current limit for the bulbs? Redundant with colormixing lights 1.


264Related Demos

References

Other Uses


YesChecked

BENHAM’S DISK

6F10.27DCS #

6 OpticsArea

6F ColorTopic


Concept

Benham’s disk, color, eye, black, white, synthesis, analysis,spinning, rotating, alternating pattern,

Keywords

In StorageStatus

StorageLocation

goodand engaging

Rating

Spin the disk and one sees colorsinstead of just black and white. Spinthe disk the other way and the colorschange positions.

BriefDescription

Disk, DrillEquipmentNeeded

Details

314Demo #


Related Demos

References

Other Uses

08-13-2013DateChecked

NoChecked

COLOR DISKS AND STROBOSCOPE

6F10.25DCS #

6 OpticsArea

6F ColorTopic


Concept

Newton’s color disk, stroboscope, optical illusion,persistence of vision, afterimage, eyes, synthesis andanalysis of color, motion, color mixing, frequency, spinningdisk,

Keywords

In StorageStatus

StorageLocation

old buteffective

Rating

Disks with colored sectors are spununtil the colors blend together.Other disks are spun so images canblend together to simulate motionand/or illusions.

BriefDescription

EquipmentNeeded

Details

321Demo #


Related Demos

References

Other Uses


NoChecked

Color Filters

6F10.20DCS #

6 OpticsArea

6F ColorTopic


Concept

color, filters, rgbKeywords

ActiveStatus

44Location

Rating

Color filters.BriefDescription

Light source to filter.EquipmentNeeded

Use with overhead projector or otherlight source. Contains [Red; Green;Blue] and [Cyan; Magenta; Yellow]filters

Details

249Demo #


Related Demos

References

Other Uses

5/8/2015DateChecked

YesChecked

Prism

DCS #

6 OpticsArea

6F ColorTopic

6F30 DispersionConcept

refraction, index of refraction, reflection, dispersion, color,light, thin film interference, geometrical optics,

Keywords

ActiveStatus

40Location

Rating

Two standard prisms and one fivesided prism.

BriefDescription

EquipmentNeeded

Details

234Demo #

Both prisms are badly chipped and could be replaced.Suggestions forImprovement

Related Demos

References

Other Uses


YesChecked

Linear Polarized Filters

6H10.10DCS #

6 OpticsArea

6H PolarizationTopic

6H10 DichroicPolarization

Concept

polarized filter, light, student interactive demo, polarizedKeywords

ActiveStatus

40Location

Rating

Place two filters on top of oneanother then rotate the screns.When the screens are at 90 degreesto eachother, no light will passthrough.

BriefDescription

Two polarized filters found in box.EquipmentNeeded

There are dozens of polarizing filtersin box.

Use an overhead projector to showentire class.

Details

221Demo #


Related Demos

References

Other Uses


YesChecked

Polarized 3D Glasses

DCS #

6 OpticsArea


6H10 DichroicPolarization

Concept

polarized, optics, student interactive demo, linearpolarization

Keywords

ActiveStatus

40Location

goodand engaging

Rating

Linearly polarized glasses withdifferent rotation in each eye.

BriefDescription

EquipmentNeeded

50 countDetails

228Demo #


Related Demos

References

Other Uses


YesChecked

Kayro Syrup Barber Polarization

6H30.30DCS #

6 OpticsArea


6H30 CircularPolarization

Concept

circular polarization, optical activity, corn syrup, light,Keywords

UnderDevelopment

Status

43Location

Rating

The sugar molecules in the syrupare optically active, so they circularlypolarize the light. A thicker layer ofsugar will rotate the light through adifferent angle than a thinner angle,thus different wavelengths (colors)of light are seen.

BriefDescription

Polarized glasses to view.EquipmentNeeded

NEEDS WORK

Polarized disk rotates in front of lightsource which then shines via amirror, through the bottom of thecorn syrup container.

Details

244Demo #

This effect is more powerful if the syrup is illuminated(backlit in particular) by a polarized white light source and arotating polarizing filter is used between the viewer and thesyrup. Perhaps use a fixed filter inside and a rotating filteroutside between the viewer and syrup. See “polarization kit.”


Related Demos

References

Other Uses


YesChecked

POLARIZATION KIT

6H?.?DCS #

6 OpticsArea


variousConcept

polarization, dichroic, polarizer, analyzer, reflection, circular,stress, colors, plastic, birefringence, circularly, polarized,karo

Keywords

ActiveStatus

44Location

good andengaging

Rating

Using this set you can demonstrateboth the physical phenomenon ofpolarization and its use for analyzingstress.

BriefDescription

Polarizers, plastic shapes, tape, corn syrup.

Overhead projector

EquipmentNeeded

When you stress the included plasticshapes between the polarizers, theybecome birefringent and createbright colors and patterns alonglines of internal strain.

You can stack the two polarizingsheets attached to the boards on topof an overhead projector (there aremarble “bearings” to stack them onso you can rotate them and note thechange in transmitted intensity).

With the two mounted sheetsoriented with polarization axesperpendicular, you can then slideone of the loose sheets in between(with its polarization vector at a 450

angle to one of the sheets) and notethat now light can pass through

Details

053Demo #


349Related Demos

J. J. Sakurai “Modern Quantum Mechanics”References

The transmission of light through 3 sheets (twoperpendicular and one at 450) can be used to discusscircularly polarized light. It can also be used in quantummechanics to illustrate the Stern-Gerlach experiment via

Other Uses


YesChecked

Energy vs. Wavelength; Psuedo-Photoelectric Effect

DCS #

7 Modern PhysicsArea

7A QuantumEffects

Topic

7A10 PhotoelectricEffect

Concept

Photon, energy, wavelength, frequency, fluorescent,fluorescence, glow in the dark.

Keywords

ActiveStatus

45Location

Rating

Different colors of LED lights ofsimilar intensity are shone on aphosphorescent sheet and theamount of glow is compared.

BriefDescription

1. LED Photon Micro-Lights (Red, Orange, Yellow, Green,Blue, Violet, White)2. Phosphorescent Vinyl Sheets, 12”x12” (2)

EquipmentNeeded

Shorter wavelength lights are muchmore effective at illuminating thesheet than long wavelength lights.Below a certain threshold, the lightcannot make the sheet glow at all nomatter how long it shines, analogousto the photoelectric effect.

Details

260Demo #


Related Demos

References

Other Uses


YesChecked

GAS SPECTRUM TUBES

7B10.11DCS #


7B Atomic PhysicsTopic

7B10 SpectraConcept

spectrum tubes, rainbow, glasses, diffraction, spectroscopy,color, spectrometer, slit, line spectra, gas, Hanheld Teslacoil, emission spectra, atomic,

Keywords

ActiveStatus

11Location

goodand engaging

Rating

Tubes containing samples of severaldifferent gases are mounted in astand. The handheld Tesla coil canbe used to light up the tubes, one ata time.

BriefDescription

Spectrum tubes, handeld Tesla coil(shelf 36) #HS-10, Rainbow Glasses or other studentspectroscopes/

EquipmentNeeded

How to use - with the Tesla coil.Precautions - shock hazard.Tube life is extended if operation iscyclic for no more than 30 seconds“on”, 30 seconds “off”, etc.,increasing the usable life of thetubes.How to use in classes - for ModernPhysics, for optics, etc.

Details

083Demo #



References

Missing, but other spectrum tubes are available in demo093, shelf 30.

Other Uses


YesChecked

SPECTROMETER

7B10.10 / 6C10.21DCS #



7B10 SpectraConcept

spectrometer, diffraction, spectrum, spectroscopy, slit, linespectra, diffraction, color, atomic,

Keywords

In StorageStatus

StorageLocation

good butlacks zest

Rating

BriefDescription

EquipmentNeeded

Details

329Demo #


Related Demos

References

Other Uses


NoChecked

RAINBOW GLASSES

7B10.10DCS #



7B10 SpectraConcept

rainbow, glasses, diffraction, spectrum, spectroscopy, color,spectrometer, slit, line spectra, atomic,

Keywords

ActiveStatus

40Location

goodand engaging

Rating

These glasses split light from anysource into its spectral components

BriefDescription

EquipmentNeeded

Details

222Demo #


Related Demos

References

Other Uses


YesChecked

Holographic Diffraction Grating Glasses

7B10.10DCS #



7B10 SpectraConcept

Holospecs, optics, diffraction grating, glasses, studentinteractive demo

Keywords

ActiveStatus

40Location

Rating

Diffraction grating glasses forviewing components of light sourcessuch as atomic spectral lines.

BriefDescription

EquipmentNeeded

Work well with point light sources.Details

227Demo #


Related Demos

References

Other Uses


YesChecked

Spectrum Tubes

7B10.10DCS #



7B10 SpectraConcept

spectrum tubes, rainbow, glasses, diffraction, spectroscopy,color, spectrometer, slit, line spectra, gas, emission spectra,atomic,

Keywords

Missing PartsStatus

30Location

Rating

Tubes containing samples of severaldifferent gases are mounted in highvoltage spectrum tube power suppy.The spectra of the various gasescan be observed by eye.Monochromatic emission lines canbe observed wtihspectroscope/rainbow glasses.

BriefDescription

various spectrum tubes found in box,Rainbow Glasses orother student spectroscopes

EquipmentNeeded

Gases include: Air, Argon, CarbonDioxide, Deuterium, Hydrogen,Neon, Nitrogen, Oxygen

Includes two power supplies

Details

093Demo #

One of the power supplies is missing as of 05/2015 (twonew and one old remaining).


083Related Demos

References

Other Uses


YesChecked

3D Firework Glasses

7B10.10DCS #



7B10 SpectraConcept

optics, laser viewer, glasses, firework, student interactivedemo, fireworks, diffraction grating

Keywords

ActiveStatus

40Location

goodand engaging

Rating

Diffraction grating glasses.BriefDescription

EquipmentNeeded

50 countDetails

223Demo #


Related Demos

References

Other Uses


YesChecked

Neon Gas Tube

DCS #



7B10 SpectraConcept

spectrum tubes, rainbow, glasses, diffraction, spectroscopy,color, spectrometer, slit, line spectra, gas, emission spectra,atomic,hand held tesla coil, tesla coil

Keywords

ActiveStatus

13Location

goodand engaging

Rating

Glass tube filled with neon gas. Canbe used with handheld tesla coil orlarge tesla coil at a distance.

BriefDescription

Handheld Tesla coilEquipmentNeeded

Details

215Demo #


178Related Demos

References

Other Uses


YesChecked

UV LIGHT AND FLUORESCENT SAMPLES

7B13.50DCS #



7B13 ResonanceRadiation

Concept

UV light, ultraviolet, fluorescence, phosphorescence,resonance radiation, absorption, emission, color changingbeads, chalk, rock, mineral, atomic, blacklight, black light

Keywords

ActiveStatus

29Location

goodand engaging

Rating

Small blacklight with miscellaneousfluorescent samples.

BriefDescription

An additional LARGE UV light fixture is located on TOPshelf # 53

EquipmentNeeded

Some samples included are chalks,antifreeze, tonic water, various dyes,rocks.

Details

095Demo #


Related Demos

References

Other Uses


YesChecked

Glow Door

7B13.50DCS #



7B13 ResonanceRadiation

Concept

door, glow, dark, light, black light, blacklight, glow in thedark, ultraviolet, UV, visible

Keywords

UnderDevelopment

Status

Floor/CartLocation

goodand engaging

Rating

Door painted with glow-in-the-darkpaint that will fluoresce underillumination with visible or ultravioletlight.

BriefDescription

Light source:

Visible, ultraviolet, strobe, or otherwise.

EquipmentNeeded

Can be used for 7B13.50fluorescence or 6B10.20 inversesquare law

Details

410Demo #


Related Demos

References

Other Uses

DateChecked

YesChecked

NUCLEAR FUSION FORCE MODEL

7D20.?DCS #


7D NuclearPhysics

Topic

7D20 NuclearReactions

Concept

nuclear fusion force model, reactions, repel, attract,magnets, cylinder, critical distance,

Keywords

ActiveStatus

12Location

goodand engaging

Rating

Put the two cylinders in the tube withthe red sides facing each other.Over large distances the cylinderswill repel, until at a critical distancethe cylinders will begin to attract.Simulates the action of nuclearfusion.

BriefDescription

EquipmentNeeded

Details

097Demo #


Related Demos

References

Other Uses

4/3/2015DateChecked

YesChecked

DIFFUSION CLOUD CHAMBER

7D30.60DCS #


7D NuclearPhysics

Topic

7D30 ParticleDetectors

Concept

diffusion cloud chamber, particle detector, modern, nuclear,alpha, beta, gamma, radiation, vapor, electron, muon,cosmic ray, oversaturated, condensation, contrail,

Keywords

ActiveStatus

Floor/CartLocation

goodand engaging

Rating

Radioactive sources and otherparticles from the backgroundradiation are seen in a layer ofoversaturated alcohol vapor whenthey pass through the chamber andleave contrails.Suggest you use with video camera.

BriefDescription

Ice (10 lb), waterEquipmentNeeded

Quick-start and detailed instructionsare available in the includednotebook.

NOTE: The chamber requires about1kg of ice per hour of operation. Forlong uses, make sure to alwayskeep ice in the cooler to preventdamaging the heat exchanger.

1)Adjust chamber liner so that LEDlights are showing and it it touchesbottom2) Pour 30-40mL of 91% isopropylalcohol in chamber and allow theliner to saturate. Use pipette tospeed up saturation3) Fill ice chest 1/2 full with ice andcover with water4) Place water pump in ice chestand insure drainage tube is also inice chest5) Plug in cart. LED lights shouldcome on and pump should start.Check drainage hose for water flow.

Details

357Demo #

If tubing ever cracks and needs to be replaced, use 1/4” ID(3/8” OD) latex hose.


Related Demos

References

Other Uses


YesChecked

Survey Meter (Geiger Counter)

DCS #


7D NuclearPhysics

Topic

7D30 ParticleDetectors

Concept

Survey meter, geiger counter, radiation, radioactivity, alpha,beta particles, gamma rays, ionizing,

Keywords

ActiveStatus

10Location

Rating

Survey MeterBriefDescription

EquipmentNeeded

Details

165Demo #


Related Demos

References

Other Uses


YesChecked

Quiet Air Source

DCS #

9 EquipmentArea

Topic

Concept

air source, quiet air source, air trackKeywords

ActiveStatus

14Location

Rating

Use with air track Demos 069, 070 &071

BriefDescription

EquipmentNeeded

Details

068Demo #


062, 069, 071,070

Related Demos

References

Other Uses


YesChecked

PINE-SOL

DCS #

9 EquipmentArea

9A SupportSystems

Topic

9A73 UnclassifiedDemonstrations

Concept

Keywords

ActiveStatus

40Location

Rating

Pine Sol for use in other demos.BriefDescription

EquipmentNeeded

5 bottles of Pine Sol as of April 2015Details

225Demo #


Related Demos

References

Other Uses


YesChecked

Infrared Thermometer

DCS #

9 EquipmentArea

9B ElectronicTopic

Concept

Handheld, infrared, digital, thermometerKeywords

ActiveStatus

10Location

Rating

Small infrared thermometer withoutlaser aim.

BriefDescription

EquipmentNeeded

Details

166Demo #

Battery low as of 03/28/2015. Replace with CR2032 lithiumbattery.


Related Demos

References

Other Uses


YesChecked

Light Sensor

DCS #

9 EquipmentArea

9B ElectronicTopic

Concept

light sensor, light, polarized filters, solar, light intensity,intensity, fluorescent light, sensor, logger pro, vernier

Keywords

ActiveStatus

30Location

goodand engaging

Rating

The Light Sensor approximates thehuman eye in spectral response andcan be used over three differentillumination ranges, which you selectwith a switch. Use it for inversesquare law experiments or forstudying polarizers, reflectivity, orsolar energy.

BriefDescription

Demo room laptop or personal computer with Logger Prosoftware installed.

EquipmentNeeded

Found in Logger Pro DataCollectiom Kit

Details

120bDemo #


120Related Demos

References

Other Uses


YesChecked

EKG Sensor

DCS #

9 EquipmentArea

9B ElectronicTopic

Concept

EKG, electricity, membrane potential, heart, Vernier, loggerpro

Keywords

ActiveStatus

30Location

goodand engaging

Rating

EKG Sensor measures electricalsignals produced during musclecontractions.

BriefDescription


Disposable electrodes (included in box).

EquipmentNeeded

Found in Logger Pro Data CollectionKit

It can be used for standard 3-leadEKG tracings or to make surfaceEMG recordings. Each of the threeleads on the sensor connect todisposable electrodes.

An EKG graph is displayed,demonstrating to students thecontraction and repolarization of theheart's chambers. A package of 100disposable electrodes is includedwith the sensor. A package of 100additional electrodes is available.

Details

120cDemo #


120Related Demos

References

The electrodes are single-use packages and once opened,they must be used. See instructions in box for electrodestorage information.

Other Uses


YesChecked

Magnetic Field Sensor

DCS #

9 EquipmentArea

9B ElectronicTopic

Concept

magnetic field, field sensor, vernier, logger pro, earthKeywords

ActiveStatus

30Location

goodand engaging

Rating

This sensor is sensitive enough tomeasure the Earth’s magnetic field.It can also be used to study the fieldaround permanent magnets, coils,and electrical devices.

BriefDescription


EquipmentNeeded


This sensor has a rotating sensortip. This allows you to measure bothtransverse and longitudinal magneticfields.

Details

120eDemo #


120Related Demos

References

Other Uses


YesChecked

Temperature Probe

DCS #

9 EquipmentArea

9B ElectronicTopic

Concept

temperature, probe, thermodynamics, vernier, logger pro,temperature sensor, thermometer

Keywords

ActiveStatus

30Location

goodand engaging

Rating

This rugged and durabletemperature probe has a sealedstainless steel shaft and tip that canbe used in organic liquids, saltsolutions, acids, and bases.

BriefDescription


EquipmentNeeded


Details

120fDemo #


120Related Demos

References

Other Uses


YesChecked

Force Plate

DCS #

9 EquipmentArea

9B ElectronicTopic

Concept

Impulse, force plate, force, vernier, logger proKeywords

ActiveStatus

30Location

goodand engaging

Rating

Force Plate measures forces ofstepping, jumping and other human-scale actions. You can measure theimpulse delivered by the floor whenyou jump.

BriefDescription


EquipmentNeeded

Found in Logger Pro Data CollectionKit. The Force Plate has tworanges, one for larger forces up to3500 N, and a more sensitive 800 Nrange for pushing experiments.

Details

120hDemo #


120Related Demos

References

Other Uses


YesChecked

Logger Pro Data Collection Kit

DCS #

9 EquipmentArea

9B ElectronicTopic

Concept

Force Plate, Wireless Dynamic Sensor System,Temperature Probe, Magnetic Field Sensor, Microphone,EKG Sensor, Light Sensor, Motion Detector, Vernier,Logger Pro

Keywords

ActiveStatus

30Location

goodand engaging

Rating

Various data collection devices thatreqire Logger Pro software can beused to collect data from any demoand display in graph form to theclass.

BriefDescription

Laptop or personal computer with Logger Pro softwareinstalled.

EquipmentNeeded

This box contains all the Verniermeasurement tools available.

This box includes an old laptop withLogger Pro installed.

Details

120Demo #


120a-iRelated Demos

References

Other Uses


YesChecked

Motion Detector

DCS #

9 EquipmentArea

9B ElectronicTopic

9B15 Position andVelocity Detectors

Concept

Vernier, motion, motion detector, motion, velocity, position,acceleration, laptop, logger pro

Keywords

ActiveStatus

30Location

goodand engaging

Rating

Ultrasound is used to measuredistance to an object

BriefDescription


EquipmentNeeded

Found in Logger Pro Data CollectionKit. Ultrasonic pulses are emitted bythe Motion Detector, reflected from atarget, and then detected by thedevice. The time it takes for thereflected pulses to return is used tocalculate position, velocity, andacceleration. This allows you tostudy the motion of objects.

Sensitivity switch to choose betweenmeasuring everyday objects andmotion on Pasco carts.

Details

120aDemo #


120Related Demos

References

Other Uses


YesChecked

Wireless Dynamic Sensor System

DCS #

9 EquipmentArea

9B ElectronicTopic


Concept

force, acceleration, altitude, vernier, logger pro,accelerometer, wireless, bluetooth, pasco cart track

Keywords

ActiveStatus

30Location

goodand engaging

Rating

Wireless Dynamics Sensor Systemcombines a 3-axis accelerometer,altimeter, and force sensor into oneunit that communicates wirelesslywith your computer usingBluetooth®.

BriefDescription


EquipmentNeeded

Found in Logger Pro Data CollectionKit.

Can be used as a stand-alone datalogger. This data-collection systemis completely free of cables.

Detailed instruction manual includedin box.

Details

120gDemo #


120Related Demos

References

Can be mounted on PASCO track carts.Other Uses


YesChecked

Radar Gun

DCS #

9 EquipmentArea

9B ElectronicTopic


Concept

radar, gun, speedKeywords

ActiveStatus

32Location

Rating

Radar gun to measure objects’speed.

BriefDescription

2 “C” batteries (not included)EquipmentNeeded

Details

371Demo #


Related Demos

References

Other Uses


YesChecked

Vernier Microphone

DCS #

9 EquipmentArea

9B ElectronicTopic

9B18 SoundDetectors

Concept

sound, microphone, waves, speed of sound, vernier, loggerpro, waveform

Keywords

ActiveStatus

30Location

goodand engaging

Rating

Microphone can be used to displayand study the waveforms of soundsfrom voices and musicalinstruments. It is also great forspeed of sound experiments.

BriefDescription


EquipmentNeeded

Found in Logger Pro Data CollectionKit. Can be used to comparewaveforms of musical instruments.The waveform of a bowed note isvery different from that of a pluckedone, leading to a very differentsound.

Details

120dDemo #


120Related Demos

References

Other Uses


YesChecked

LARGE DEMONSTRATION METER

9B20DCS #

9 EquipmentArea

9B ElectronicTopic

9B20Circuits/Components/Inst.

Concept

meter, large, demonstration, galvanometerKeywords

ActiveStatus

14Location

goodand engaging

Rating

A large face voltage and resistancemeter, suitable for large lecturecourses (the Ohm meter uses thesame leads, you simply flip thegauge backing around).

BriefDescription

Meter and probe leads (included in box)

One D cell battery

EquipmentNeeded

There is an instruction sheet in thebox, along with an instruction book.

There is a zero knob on the back,and a calibrating knob (for use withthe resistance setting) on the front.

The resistance meter is nice forinduction experiments since the zeroposition on the resistance gauge isin the center.

Details

119Demo #


177Related Demos

References

Other Uses


YesChecked

Projection Meter

DCS #

9 EquipmentArea

9B ElectronicTopic

9B20Circuits/Components/Inst.

Concept

Multimiter, multi, meter, ammeter, ohmmeter, voltmeter,amps

Keywords

ActiveStatus

12Location

Rating

Multimeter that can be projectedwith an overhead projector

BriefDescription

EquipmentNeeded

Details

089Demo #

Needs new AA battery for zero-centered mode.Suggestions forImprovement

Related Demos

References

Other Uses


YesChecked

PASCO DIGITAL FUNCTION GENERATOR/AMP

9B30DCS #

9 EquipmentArea

9B ElectronicTopic

9B30 FunctionGenerators

Concept

Pasco, AC, digital, function, generator, amplifier, ampKeywords

ActiveStatus

61Location

Rating

Digital function generator.BriefDescription

Cables to run from function generator to deviceEquipmentNeeded

This is a Pasco digital functiongenerator. It can produce sine,square, and triangular waves.

2 generators are available on shelf58.

Details

9012Demo #


Related Demos

References

Other Uses


YesChecked

PC USB Oscilloscope

DCS #

9 EquipmentArea

9B ElectronicTopic

9B37Oscilloscopes

Concept

voltage, frequency, timing, circuit, electricity, oscilloscope,PC oscilloscope

Keywords

ActiveStatus

33Location

goodand engaging

Rating

Simply connect the device to thecomputer USB port, run theWindows application and you cananalyze various signal parameters(voltage, frequency, timing, etc.) orview and record inputs and outputs,in order to analyze them and thusdetermine if the electronic circuit isoperating as intended.

BriefDescription

EquipmentNeeded

2-channel oscilloscope: allowsmarker measurements, triggering(with absolute, differential, externaltrigger modes) and adjustablepretrigger, signal voltage andfrequency measurement, filtering,etc.** This device may produce a ghostsignal at 60hz and harmonics like300hz after a few minutes of useunplugging from the USB will reset itfor another run.

Details

021Demo #


Related Demos

References

Full manual on the demo computer.Other Uses


YesChecked

Vernier Voltage Probes

DCS #

9 EquipmentArea

9B ElectronicTopic

9B37Oscilloscopes

Concept

Voltage, probe, Vernier, Logger Pro, DC, direct current, AC,alternating, oscilloscope.

Keywords

ActiveStatus

30Location

Rating

Voltage probes that can be usedwith Logger Pro software tomeasure DC voltages or as a lowfrequency oscilloscope.

BriefDescription


EquipmentNeeded

Two sets of probes are included.Details

120iDemo #


120Related Demos

References

Other Uses

7/7/2015DateChecked

YesChecked

Variac

9B50.?DCS #

9 EquipmentArea

9B ElectronicTopic

9B50 PowerSupplies

Concept

Keywords

ActiveStatus

61Location

staticRating

BriefDescription

EquipmentNeeded

Details

NADemo #


Related Demos

References

Other Uses


YesChecked

MERCURY LAMP

9B60.60DCS #

9 EquipmentArea

9B ElectronicTopic

9B60 LightSources

Concept

mercury lamp, light source, spectrumKeywords

ActiveStatus

46Location

goodand engaging

Rating

Mercury lamp for use with diffractiongratings etc.

BriefDescription

EquipmentNeeded

Allow several minutes for lamp towarm up. If turned off, the lamp willrequire several minutes to relight.As such, it is best to turn on andleave on instead of cycling on andoff.

Details

270Demo #


258Related Demos

References

Other Uses


YesChecked

LOW PRESSURE SODIUM LAMP

9B60.60DCS #

9 EquipmentArea

9B ElectronicTopic

9B60 LightSources

Concept

low pressure sodium vapor lamp, light source,monochromatic,

Keywords

ActiveStatus

46Location

goodand engaging

Rating

This Sodium Vapor Light Sourceprovides sodium light at highintensity. It is perfect for allmonochromatic light needs.

BriefDescription

Low pressure sodium vapor lamp (35 Watt) with a fixture forit.

EquipmentNeeded

The lamp needs several minutes towarm up and will appear pink whenturned on.

When inserting a lamp, ensure thatthe lamp connects properly with theelectrical contacts of the lampholder.Before removing the lamp, turn ofthe switch and let the lamp cooldown.Remove the lamp immediately if theouter bulb is broken.This lamp contains sodium. Contactwith water can result in a violentreaction/ignition.

Details

269Demo #



References

Other Uses


YesChecked

Coiled Coil Filament

9B60.10DCS #

9 EquipmentArea

9B ElectronicTopic

9B60 LightSources

Concept

white light, light source, filament, coiled coil, coil, resistanceKeywords

ActiveStatus

38Location

old buteffective

Rating

This lamp projects an image of itscoiled coil filament. You can focusthe image by turning the focusingknobs found on either side of thelamp. The lamp can project a clearimage from the back of the largelecture hall (E100) onto theprojection screen

BriefDescription

Ground glass screen optional (demo 214)EquipmentNeeded

Details

207Demo #


214Related Demos

References

Other Uses


YesChecked

SMALL STROBE LIGHT

9B60.20DCS #

9 EquipmentArea

9B ElectronicTopic

9B60 LightSources

Concept

strobe light, strobe effect, light source, frequency, strobotac,rpm

Keywords

ActiveStatus

44Location

goodand engaging

Rating

Strobe light capable of very highflash frequencies. Can be used tomeasure rpm of spinning objects.

BriefDescription

EquipmentNeeded

Only one left, takes a bit of time towarm up. Produces a dim red lightrather than a bright white light likethe Pasco stroboscope (demo 257)

Details

251Demo #


257Related Demos

References

Other Uses


YesChecked

STRAIGHT LINE FILAMENT LAMPS

9B60.55DCS #

9 EquipmentArea

9B ElectronicTopic

9B60 LightSources

Concept

straight line filament lamps, light bulbsKeywords

MissingParts/Storage

Status

46Location

Rating

BriefDescription

EquipmentNeeded

Details

267Demo #

Only one cover is present in box, there are no light bulbs orpower supplies in the box. Entire demo is essentiallymissing.


Related Demos

References

Other Uses


YesChecked

Pasco Stroboscope

9B60.30DCS #

9 EquipmentArea

9B ElectronicTopic

9B60 LightSources

Concept

Strobe, large, light, stroboscope, RPM, revolutions perminute

Keywords

ActiveStatus

45Location

Rating

This Digital Stroboscope combinesthe mesmerizing fun of thetraditional strobe, with a digitalfrequency readout for accurate,quantitative data.

BriefDescription

light source, the large black light works well on shelf 43EquipmentNeeded

Can display frequency in RPM or inflashes/second. Can also respondto external trigger

Details

257Demo #


251Related Demos

References

Other Uses

5/1/2015DateChecked

YesChecked

Point Light Source

DCS #

9 EquipmentArea

9B ElectronicTopic

9B60 LightSources

Concept

light source, point light source, light, opticsKeywords

ActiveStatus

46Location

staticRating

Bright point light is produced fromlight bulb, good for holospecs.

BriefDescription

Clamp stand, holder clampEquipmentNeeded

For use in demos where a point lightsource is required. Light is emittedfrom a filament that is severalmillimeters wide.

Details

265Demo #


Related Demos

References

Other Uses

5/6/2015DateChecked

YesChecked

SHORT WAVE UV SUN LAMP

DCS #

9 EquipmentArea

9B ElectronicTopic

9B60 LightSources

Concept

UV, ultraviolet, sun lamp, sunlamp, tan, tanning,Keywords

ActiveStatus

46Location

staticRating

BriefDescription

EquipmentNeeded

Must hold down button for at least25 seconds

Details

266Demo #

Does not light following directions on back of unit. Was ableto light once, but went out several seconds later and wasnot able to reproduce. Replacement bulbs for this unit arelikely out of production and cannot be purchased.


Related Demos

References

Replace with modern fluorescent tube UV lamp?Other Uses


YesChecked

Nova Strobe

DCS #

9 EquipmentArea

9B ElectronicTopic

9B60 LightSources

Concept

Strobe light, stroboscope, handheld, RPM, revolutions perminute.

Keywords

ActiveStatus

45Location

Rating

Hand held Strobe light. Digitaldisplay shows RPM of spinningobject in static image. Adjusts inone RPM intervals

BriefDescription

EquipmentNeeded

Details

382Demo #


251Related Demos

References

Other Uses

5/1/2015DateChecked

YesChecked

LASER LIGHT SHOW

9B62.? / 6J11.?DCS #

9 EquipmentArea

9B ElectronicTopic

9B62 LasersConcept

laser light show, persistence of vision, laser patterns, lightbeam, sound responsive system, vibrations, waves,

Keywords

ActiveStatus

45Location

goodand engaging

Rating

This laser has 16 patterns. Choosefrom preset laser patterns or designyour own patterns on the fly.6J11.? = The Eye; Physiology;Persistence of Vision

BriefDescription

EquipmentNeeded

This is sound-responsive systemwith adjustable sensitivity - built-inmicrophone enables it to projectpatterns in time with anysurrounding sound. You can alsoconnect an external sound source tothe AUDIO INPUT.

NEVER point laser beam at anyone!NEVER look directly into the laserbeam!

Details

262Demo #


Related Demos

References

Other Uses


YesChecked

Red Laser Pointers

9B62.?DCS #

9 EquipmentArea

9B ElectronicTopic

9B62 LasersConcept

laser pointer, helium neon, He-Ne, diffraction pattern tips,pocket size, beam,

Keywords

ActiveStatus

55Location

goodand engaging

Rating

Put a diffraction pattern tip on alaser and press the touch buttonlocated on the side of the pointer.You will see a pattern on the screen.

BriefDescription

Pocket-size laser pointer, set of diffraction patterns.

Several identical packages are included in this box.

EquipmentNeeded

This Laser Pointer project a intense,solid red dot up to 500 yards. Uses 3LR44 batteries.Direct eye contact with laser beammay cause serious eye injury!

Details

348Demo #


Related Demos

References

Other Uses


YesChecked

HELIUM-NEON LASER

9B62.?DCS #

9 EquipmentArea

9B ElectronicTopic

9B62 LasersConcept

helium, neon, He-Ne, laser, optics, reflections, refraction,diffraction, interference, grating,

Keywords

ActiveStatus

45Location

goodand engaging

Rating

There are two of these. They aresimple Helium Neon Lasers that runoff of wall power.

BriefDescription

EquipmentNeeded

Details

255, 256Demo #


Related Demos

References

Other Uses


YesChecked

2 GREEN SOLID STATE LASERS (532 nm)

9B62DCS #

9 EquipmentArea

9B ElectronicTopic

9B62 LasersConcept

green, laser, 532 nmKeywords

ActiveStatus

45Location

goodand engaging

Rating

Two solid state green lasers. Theyare both battery powered andslightly larger than a normal laserpointer. There is one plasticholder/stand in the box as well (canbe used on its own or you can alsouse a metal rod stand with clamp tohold laser)

BriefDescription

None, unless you want to use a metal rod stand. Thebatteries for each are located in the box, simply install andthe pointers are ready for use.

You will need the key to operate. Contact Jeff Breitschopf:[email protected] 1-4130 8305564488

EquipmentNeeded

Details

261Demo #


245Related Demos

References

Other Uses


YesChecked

MICROWAVE OVEN

9B65DCS #

9 EquipmentArea

9B ElectronicTopic

9B65 MicrowaveApparatus

Concept

microwave, ovenKeywords

ActiveStatus

Under workbenchnext to 61

Location

good butlacks zest

Rating

A microwave oven and sheet withfluorescent blubs.

BriefDescription

EquipmentNeeded

Can be filled with fluorescent bulbs,and turned on.

Also can be filled with glow sticks,as the glow sticks heat up, they glowmore intensely.

Details

253Demo #


Related Demos

References

Other Uses


YesChecked

Motor for Rotating Siren (wheel with holes)

DCS #

9 EquipmentArea

9C MechanicalTopic

9C10 MotorsConcept

motor, siren, rotating, eletric, sound, loud, ossicaltionKeywords

In StorageStatus

StorageLocation

old buteffective

Rating

A simple motor for use with theRotating Siren. Currently in storagebecuase of unuse

BriefDescription

Rotating SirenEquipmentNeeded

Details

331Demo #


Related Demos

References

Other Uses


NoChecked

Mini Air Compressor

DCS #

9 EquipmentArea

9C MechanicalTopic

9C20 PumpsConcept

air compressor, compressor, 250 psi, rechargable aerosolcan, spray can

Keywords

Needs RepairStatus

55Location

Rating

Small air compressor that generatesup to 250 PSI. Use cigarette lighteradapter in box to plug into A/C outlet

BriefDescription

Cigarette lighter A/C converterEquipmentNeeded

Pumps up to 250 PSI, can be usedwith the rechargable aerosol cans

Details

9018Demo #

Does not work with included wall to car adapter. Powerpulses but does not stay on steadily.


Related Demos

References

Other Uses


YesChecked

Submersible Water Pump

9.C.20DCS #

9 EquipmentArea

9C MechanicalTopic

9C20 PumpsConcept

Keywords

ActiveStatus

15Location

� Support EquipRating

This is for Demo 115.BriefDescription

Includes clampsEquipmentNeeded

Details

9020Demo #


115Related Demos

References

Other Uses


YesChecked

MityVac hand vacuum pump

DCS #

9 EquipmentArea

9C MechanicalTopic

9C25 VacuumConcept

vacuum, pump, hand, handheldKeywords

ActiveStatus

18Location

basicmeasurement

Rating

Vacuum pump for various demos.NOT for use with liquid.

BriefDescription

EquipmentNeeded

Details

407Demo #


Related Demos

References

Other Uses


YesChecked

Rechargable Aerosol Spray Can

DCS #

9 EquipmentArea

9C MechanicalTopic

9C40 OtherConcept

spray can, aerosol spray can, pressurize, pressure, bikepump, mini air compressor, air compressor

Keywords

ActiveStatus

55Location

Rating

Fill can with any liquid you would liketo aerosolize. Pressurize the canwith a bike pump or the mini aircompressor to 90 psi. The can willwithstand 250 PSI

BriefDescription

Liquid to fill can and bike pump or mini air compressor.Nozzles are included

EquipmentNeeded

2 cans are available.Details

9019Demo #


Related Demos

References

Other Uses


YesChecked

Roller Track

DCS #

9 EquipmentArea

9C MechanicalTopic

9C40 OtherConcept

Keywords

ActiveStatus

FloorLocation

Rating

wood track for using disc rollers fromdemo 43

BriefDescription

EquipmentNeeded

Details

409Demo #


043Related Demos

References

Other Uses


YesChecked

Soda Siphon 10 Charges

DCS #

StorageArea

Topic

Concept

Keywords

In StorageStatus

StorageLocation

Rating

Soda Siphon10 Charges

BriefDescription

EquipmentNeeded

Details

324Demo #


Related Demos

References

Other Uses


NoChecked

DENSITY HYDROMETER

2B40.?DCS #

StorageArea



Concept

density, hydrometer, buoyancy, fluid, tube,Keywords

In StorageStatus

StorageLocation

old buteffective

Rating

BriefDescription

EquipmentNeeded

Details

334Demo #


Related Demos

References

Other Uses


NoChecked

BELL JAR

2B?.? / 3B30.30 /4C?.? / 4E?.?

DCS #

variousArea

variousTopic

variousConcept

bell jar, vacuum, pump, pressure, Hero engine, cohesion,barometer, buoyancy of air, siphon, bell, boil, freeze, water,balloon, marshmallow, peep,

Keywords

ActiveStatus

30Location

goodand engaging

Rating

1Q40.86 = air jet Hero's engine2A10.37 = cohesion plates fallacy2B35.15 = barometer2B40.40 = buoyancy of air2B60.23 = siphon3B30.30 = bell4C30.15 = boil water4C31.21 = freeze water4E20.40 =

BriefDescription

Vacuum pump, bell jar and base, Specific item, pressuregauge.

EquipmentNeeded

Place items in bell jar and evacuate.Make sure that base has a greaseon its surface, so you will get bettersealing.

Details

311Demo #


Related Demos

References

Other Uses


YesChecked

BELL JARS

2B?.? / 3B30.30 /4C?.? / 4E?.?

DCS #

variousArea

variousTopic

variousConcept

bell jar, vacuum, pump, pressure, Hero engine, cohesion,barometer, buoyancy of air, siphon, bell, boil, freeze, water,balloon, marshmallow, peep,

Keywords

ActiveStatus

30Location

goodand engaging

Rating

1Q40.86 = air jet Hero's engine2A10.37 = cohesion plates fallacy2B35.15 = barometer2B40.40 = buoyancy of air2B60.23 = siphon3B30.30 = bell4C30.15 = boil water4C31.21 = freeze water4E20.40 =

BriefDescription

Vacuum pump, bell jar and base, Specific item, pressuregauge.

EquipmentNeeded

Place items in bell jar and evacuate.Make sure that base has a greaseon its surface, so you will get bettersealing.

Details

309Demo #

No base is included in this box, though one is included indemo 311 shelf 30


311Related Demos

References

No base is included in this box, though one is included indemo 311 shelf 30

Other Uses


YesChecked

Documents

Belousov-Zhabotinskii Reaction