ECE Mnemonics 2016

8/18/2019 ECE Mnemonics 2016

1/83

Compilation of ECE Mnemonics

iNeed ECE/ IT-related job with competitive salary? You may send your updated resume to me via [email protected].

a compilation of mnemonics for

Electronics Engineering (ECE)

by

JeMery Gentiles


2/83


iiNeed ECE/ IT-related job with competitive salary? You may send your updated resume to me via [email protected].

TABLE OF CONTENTS

Chapter I. Mathematics………………………………………………………………………………………………………….1

Constant…………………………………………………………………………………………………………………….....1

Conversion………………………………………………………………………………...………………………………….3

Arithmetic………………………………………………………………………………………………………………………5

Algebra…………………………………………………………………………………………………………………………..8

Trigonometry………………………………………………………………………………………………………………..13

Geometry………………………………………………………………………………………………………………………17

Calculus………………………………………………………………………………………………………………………...17

Differential Equation………………………………………………………………………………..…….…………….18

Probability and Statistics………………………………………………………………………………………….……18

Chapter II. Electronics……………………………………………..………………….….……….….……….….……….…..19

Electricity and Magnetism…………………………………………………………………………………………….19

DC/AC Circuits…………………………………………………………………………………………………….….…….20

Energy Conversion………………………………………………………………………………………………….…….22

Semiconductor Theory………………………………………………………………………………….……………...23

Electronic Devices Fundamentals………………………………………………………………….…….………..23

Computer Principles…………………………………………………………………………………….…….………...26

Chapter III. General Engineering & Applied Sciences………………………………….….……….……..………29

General and Inorganic Chemistry…………………………………………………………….………….………..29

Organic Chemistry………………………………………………………………………………….…………………….39

Physics…………………………………………………………………………………………………….…………………...42

Thermodynamics…………………………………………………………………………….……………………………42

Strength of Materials…………………………………………………………………………………….……………..42

Engineering Economy………………………………………………………………………………….……………….44

Engineering Management………………………………………………………………..……………….…………44

ECE Laws……………………………………………………………………………….…………………….……………...45

Contracts and Obligation………………………………………………………………...……….….………………46

General Knowledge……………………………………………………………………...…………..…………………46

Chapter IV. Electronic Systems & Technologies…………………………………….….….……………….……..60

Principles of Communication…………………………………………………………………….………..………60

Modulation……………………………………………………………………………………………….…………..……61

Radio Receiver and Noise……………………………………………………………………….…………….…….61

RF Spectrum with Radio Propagation…………………………………………….………….………………..62


3/83


iiiNeed ECE/ IT-related job with competitive salary? You may send your updated resume to me via [email protected].

Microwave Communication……………………………………………………………….……………………..63

Telephony……………………………………………………………………….………………….…………………….64

Fiber optics……………………………………………………………………………………….………………………65

Data Communication……………………………………………………………………….…………….…………66

Broadcast and Acoustic…………………………………………………………………….………………….…..70

Transmission Lines………………………………………………………………………….………………….….…71

Wave Propagation and Antenna…………………………………………………….………………….……..72

Navigational Aids and Radar…………………………………………………………………………….….…...73

Satellite Communication………………………………………………………………………………………..…79


4/83


1Need ECE/ IT-related job with competitive salary? You may send your updated resume to me via [email protected].

MATH

Constant

Mnemonic deviceMay I have a large container of coffee?

Explanation Counting the letters of each word gives you the value of pi to 7 places.

Mnemonic device How i need a drink, alcoholic of course, after the heavy chapters involving geodesy

Explanation The lengths of the words constitute the number of pi; 3,14... Mnemonic device

Sir, I know a rhyme excelling in mystic force and magic spelling. Celestial spirits elucidate, allmy own striving can't relate Explanation The lengths of the words constitute the number of pi; 3,14...

Mnemonic device

How I want a drink, alcoholic of course, after the heavy lectures involving quantum mechanics!

Explanation The lengths of the words constitute the number of pi; 3,14...Mnemonic device

"May I have a large container of coffee? Thank you!" Explanation The polite version of the pi (3.141592654...) mnemonic, giving two extra digits. Number of letters in eachord is the corresponding digit in pi.

Sentences to remember Pi

3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679...

Count the characters in the words:

How I want a dr ink, a lcohol ic of c ourse, af ter the heavy lectures invo lv ing q uantum m echanics. Al l

o f thy geometry , Her r Planck , is fair ly hard ...:3.14159265358979323846264...

More examples: I took a quick g l impsing at br ight stars far nor th . (3.)1415926535I made a glass al l igator...(3.)14159"Can I have a Pepsi? Carbon ate it please. Right now !" 3.141592653 by JakeNow I took a dr ink carefu l ly as Shelly s ings. 3.14159265Tom, I need a drink. Powerades do thing s. Tomas -- you fetch Pow erade.3.14159265358And I love a giant continent on waters large and gr eat. Computer Megastore Qual i ty

Hamburger Set is now everyday so ld ins ide my ho trod. 3.1415926535897932384626I hop e I dance beauti fu l in eleven years for m ommy. (3.)1415926535I love a seven backb oned TV. Shrews wh ich ate seven gori l las fabricate

dresses.(3.)1415926535897I want a mouse no t i fy ing m e eleven t imes for three weekends. (3.)14159265358For a t ime I stood sc reaming at George whi le Ann cr ied. 3.1415926535I want a pizza, yesterday w e wanted pizza, Yes-- pizza! (3.)1415926535Yes, I like a flute. Classical is lovely mus ic. The mu sic revolves immens ely throug h

knowledge. 3.14159265358979I r ide a horse.Saturdays at eleven. Every day l ight. (3.)1415926535

http://www-groups.dcs.st-andrews.ac.uk/~history/Mathematicians/Planck.htmlhttp://www-groups.dcs.st-andrews.ac.uk/~history/Mathematicians/Planck.htmlhttp://www-groups.dcs.st-andrews.ac.uk/~history/Mathematicians/Planck.htmlhttp://www-groups.dcs.st-andrews.ac.uk/~history/Mathematicians/Planck.html


5/83



Can I tel l a story r egarding m y family l ives and views ? 3.1415926535And I Love a Pizza. Yesterday m y sist er drank,ate 3.141592653I can' t. I hadn' t mem orized pi digi ts sinc e the wo rk's terr ib ly diff icu l t .(3.)141592653589

Mnemonic device We require a mnemonic to remember e whenever we scribble math To express e, remember to

memorize a sentence to simplify this

Explanation The lengths of the words constitute the number 2.7182818284 e (the base for natural logarithms)Constant e = 2.718281828459045

United States President Andrew Jackson served 2 terms in office. He was the 7th president andwas elected in1828.

Split up E by groups. 2.7 is easy to remember. Then, 1828 — twice. Finally, a 45-90-45 triangle.Thus e is 2.7 1828 1828 45-90-45

e = 2.7182818284: Count the characters in the words:To express e, remember to memorize a sentence to simplify this orWe require a mnemonic to remember e whenever we scribble math

What is the Speed of Light?

The sentence

We guarantee certainty, clearly referring to this light mnemonic .

represents the speed of light in meters per second through the number of letters in each word:

299792458 m/s Conversion

Mnemonic device To convert from a Larger metric unit to a Smaller metric unit, think of alphabetical order. You

would move from the letter L to the right to get to the letter S.You would move to the left from theS in "smaller" to get to the letter L in "larger." Explanation


6/83



To convert from a LARGER to a SMALLER metric unit - move the decimal to the Right as many places asindicated by the # of zeros in the ten's power.To convert from a SMALLER to a LARGER metric unit -move the decimal to the Left as many places as indicated by the # of zeros in the ten's power.

Mnemonic device King Hector Died Mysteriously Drink Chocolate Milk.

Explanation Metric system... first letter in each words matches the metric system Greatest to least. ex. Kilo, Hecto,Deka, Meter, Dec, CM, MM

Mnemonic device Kids Hate Doing Math During Cloudy Mondays Km Hm Dam M Dm Cm Mm

Explanation Kilometer Hectometer Dekameter Meter Decimeter Centimeter Millimeter also helps when converting(ex.meters to millimetres) just count how many spaces from meters to millimeters to find out where toplace decimal.

Mnemonic device Good Models know how Dunkin donuts can make U not petit

Explanation

giga, mega, kilo, hecto, deca, deci, centi, milli, micro (symbol looks like a U), nano, pico Mnemonic device

King Henry Died While Drinking Chocolate Milk. Explanation This mnemonic device will help with the metric system prefixes. Kilo, Hecto, Deka,whole, deci, Centi, Milli

Mnemonic device King Henry died bloated drinking chocolate milk.

Explanation These stand for the Metric prefixes and base unit. Kilo, Hecto, Deca, base, Deci, Centi, MilliMnemonic device

King Henry Danced Merrily Down Center Main Meeting Nice People Explanation The Metric Prefixes:Kilo, Hecto, Deca, METER, Deci, Centi, Milli, Micro, Nano, PicoMnemonic device

Kangaroos Hop Down Mountians Drinking Chocolate Milk Explanation Kilo-Hecto-Deka-(M-L-G)-Deci-Centi_Milli

Mnemonic device Kings hate dragons because dragons can't make money.

Explanation Metric system prefixes (kilo, hecto, deca, base, deci, centi, milli, micro) Mnemonic device

Kittens Hate Dogs But Do Chase Mice Explanation Kilo- Hecto- Deca-Base(meter)-Deci- Centi- Milli

Mnemonic device Great mighty king henry died by drinking chunky milk

Explanation Giga, mega, kilo, hecto, deka, BASE, deci, centi, milli,

Mnemonic device Kill Him Dead Or Don't Call Me

Explanation


7/83



KiloHectoDeco(Meters, Liters, OR Grams)DeciCentiMili

This allows for all metric measurements, not just meters.

Metric System

King Henry Drinks Much Dark Chocolate Milk

The order of prefixes in the metric system, for every power of ten from 3 to -3,

is Kilometre, Hectometre,Decametre, Metre, Decimetre, Centimetre, Millimetre:

King Hector's Daffy Mother Drinks Chocolate Milk King Henry's Daughter Makes Delicious Chocolate Muffins King Henry Died Monday Drinking Chocolate Milk King Henry Died! Mother Didn't Care Much King Hector Dector Makes Delicious Chocolate Milk Kangaroos Hop Down Mountains During Cold Months Kings Have Diamonds. Most Diamonds Cost Money. King Henry Died Monday During Christmas Mass.

This variant is for the prefixes Kilo-, Hecto-, Deca-, then the Base unit (such as metre, gram, litre), thenthe prefixesDeci-, Centi-, Milli-:

Kings Have Diamonds But Diamonds Cost MoneyThe prefixes for powers of ten from 18 to -18 using increments of 3 are Exa- (18), Peta- (15), Tera-(12), Giga- (9), Mega- (6), Kilo- (3), unit (0), Milli- (-3), Micro- (-6), Nano- (-9), Pico- (-12), Femto- (-15), Atto- (-18):

Exacting Petals, Terribly Gigantic Megaphones Killed1 Million Microscopic Nasturtiums Picked Freshly by Attorneys.A subset of the prefixes is Tera- (12), Giga- (9), Mega- (6), Micro- (-6), Nano- (-9), Pico- (-12), Femto- (-15),Atto- (-18):

The Gooey Monster May Not Pick Five Apples.Arithmetic

MDAS - My Dear Aunt Sally

Mnemonic device Please Exuse My Dear Aunt Sally

Explanation Order Of Operations- parentheses,exponents,multiplication,divison, addition ans subtraction

Mnemonic device Please Excuse My Dear Aunt Sally For Little Rock

Explanation Used to remember the order of arithmetic operations (Parentheses, Exponent, Multiply, Divide, Add,Subtract, From, Left, to Right)

Mnemonic device People everywhere must devour additional seafood.

Explanation Order of operationsParentheses, exponents. multiplication, division, addition, subtraction


8/83



Order of Calculations in Math

For remembering the order of calculations in math:

Put Every Man Down And Shout

Also:

Please Excuse My Dear Aunt Sally

Please Execute My Dog And Soon

The order: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction.

Mnemonic device Kentucky

ChickenFried Explanation Used to remember division of fractions rule:Kentucky: "K"eep the first fractionChicken: "C"hange the division to multiplicationFried: "F"lip the second fraction

Div id ing Fract ions

Kentucky Chicken Fried

Notice the name is switched a little from that most famous fast-food chicken joint from blue grass

country. Use "Kentucky Chicken Fried" to remember KCF.

K -- Keep (the first fraction)

C -- Change (the sign from divide to multiply)

F -- Flip (the last fraction)

Mnemonic deviceI ate and ate until I was sick on the floor. 8 x 8 = 64.

Explanation multiplication mnem. Mnemonic device

8 times 8 fell on the floor, pick it up and its 64 Explanation its an easy way to remember 8 x 8.

Mnemonic device Six and Eight went out to skate, when they came back they were fourty-eight.

Explanation A mnemonic to remember what 6x8 is

Mnemonic device To multiply by 9, hold hands palm down in front of you, and fold down the finger (counting from

the left pinky to the right pinky) of the number multiplied by 9. The fingers to the left of the foldeddown one will give you the number of tens. The fingers to the right of the folded down one willgive you the number of ones.

Explanation Multiplication of 9 x any number from one to 10)

Mnemonic device The Rule of Nines - Multiplication

Explanation Between one times and 9 times nine, the numbers in the result always add up to nine ! 9 1+8 2+7 3+6,etc.


9/83



The Rule of Nines - Mult ip l ication

Between one times and 9 times nine, the numbers in the result always add up to nine !9

1+82+73+6etc.

Mnemonic device Does McDonald's Sell CheeseBurgers and Shakes? (DMSCBS)

Explanation Order of the algorithm of a long division problem. DMSCBS stands for Divide, Multiply, Subtract, Checkthat the divisor is larger than your remainder, Bring down the next number, and Start all over again.

Mnemonic device No Dirty Dogs! Numerator Divided (by) Denominator

Explanation To read or convert fractions rememberNumerator Divided (by) Denominator.3/53 divided by 5 = 0.6 Hint:

the decimal six tenths is equivalent to three fifths.

Students tend to divide the LARGER # by the SMALLER number and commonly miss these types ofitems. Also, I teach my students to automatically "annex 0's by writing the "understood decimal, placing iton the quotient bar directly above, and then annexing at least two zeros.

Mnemonic device Everybody's Daddy, Mother, Sister, Brother, Reunion, Celebration

Explanation Estimate, Divide, Multiply, Subtract, Bring Down, Redo (all steps), Check (by multiplying the quotient -plus any remanider times the divisor.) Students use compatable numbers to estimate the quotient. Then -follow each step to complete the division. ALWAYS check by multiplication to find the dividend. Note: If itis a decimal number that repeats - it will never be the exact dividend but will round to the exact

dividend.Brenda Woods shared this one & my stuedents added the ist & last words.

Mnemonic device Dull Monkeys Swim Backwards

orDoes Mcdonalds Sell Burgers Explanation divide, multiply, subtract and bring down


10/83



Mnemonic device "Mr. Mean"

draw a face+ +C- supposed to be division symbol Explanation Mr. Mean never smiles and makes you workstart with the eyes-add #'snose-count #'smouth-divide by that number

The steps for long d iv is ion

Dracula Must Suck Blood

1) The steps for long division are Divide, Multiply, Subtract, Bring Down: Dad Mom Sister Brother Dead Monkies Smell Bad

2) Everybody's Daddy, Mother, Sister, Brother, Reunion, Celebration

for:Estimate, Divide, Multiply, Subtract, Bring Down, Redo (all steps), Check (by multiplying thequotient - plus any remanider times the divisor.)

3) Does McDonald's Sell CheeseBurgers and Shakes?

Order of the algorithm of a long division problem:Divide, Multiply, Subtract, Check that the divisor is larger than your remainder, Bring down thenext number, andStart all over again.Mnemonic device

BODMAS Explanation stands for Bracket Of Division Multiplication, Addition and Substraction..

Mnemonic device BIDMAS

Explanation Brackets, Indices, Division, Multiplication, Addition, Subtraction

Mnemonic device Please Excuse My Dear Aunt Sally!

Explanation PEMDAS,the order of operations.ParenthesisExponentsMultplication or Division [which ever is first from left to right]Addition or Subtraction [which ever is first from left to right]

Sentence to rememb er Roman Num erals

The ascending order of Roman numerals: LCDM:Lucky Cows Drink MilkLucy Can't Drink Milk

The Roman numerals in order for I, V, X (1, 5, 10)I Vant XRays


11/83



The Roman numerals in order for I V X L C D M (1 5 10 50 100 500 1000)I Value Xylophones Like Cows Dig Milk

A Poem to remember all the Roman numerals:M's "mille" (or 1000 said)

D's half (500 - quickly read!)C's just a 100 (century!)and L is half again - 50!

So all that's left is X and V(or 10 and 5) - and I - easy!

Algebra

On another mathematical subject, some uses EIEIO as amnemonic for extracting roots and when the absolute value symbols arerequired in the answer Even Index, Even In yielding Odd (exponents).

Many people remember the Order of Operation in Maths with the word Brackets Of (fractions: 1/2 of 2)Division Multiplication Addition Subtraction (BODMAS or BOMDAS)

Order of Operat ions

PEMDAS- Parenthesis, Exponents, Multiplication & Division, Addition & Subtraction can be remembered

by the phrase: "Please excuse my dear Aunt Sally."

For those wishing to remember which is the domain and which the range:

^ y|

|-----\___| _ \__|~@@@@@@@| |_| \ ~~@@@@@@|____ / ~~@@@@@@@|____| /|-----/|+-------------------> x

Mnemonic device DRY MIXRemember variables and how to graph.

Explanation DRY- dependent or responding variables are graphed on the Y-axis.Note: The letter "Y" reaches up

vertically and the letter "X" goes across itself.MIX -independent or manipulated variables are graphed onthe X-axis. (I don't know who came up with this one.)


12/83



How to mul t ip ly two binom ia ls together?

BINOMIAL MULTIPLICATIONIf you had to multiply two binomials together such as (a+b) and (c+d), how would you keep track of theresulting products to make sure that you have multiplied everything and not left anything out.Think of FOIL

First, Outer, Inner, Last

(a+b)*(c+d) = ac(first) + ad(outer) + bc(inner) +bd(last) Factoring a Trinomial with a Lead Coefficient

The "3R" Method:

1. "R"emove the lead coefficient, but don't throw it away. Multiply the constant with the leadcoefficent.

2. Factor the remaining trinomial3. "R"eplace the lead coefficent you removed. Put it in front of both x's.4. "R"educe! Reduce the numbers in each set of parenthesis, as you would a fraction, to lowest

terms.5. Optional - use the FOIL method to check and see that I am right.

*note: if the three numbers in the trinomial have a common factor it must be factored out in the beginningfor the "3R" method to work.

Mnemonic device The alligators always want to eat the most they can. (They always eat the bigger number.)

EX: 1 < 2 Explanation Helps with greater then and less then.

Mnemonic device Pinch goes to the smaller number

Explanation


13/83



3 < 4, 4 > 3 (Pinch the 3)

Mnemonic device Negative B, negative B, plus or minus the square root, plus or minus the square root, of B

squared minus 4 A C, B squared minus 4 A C, all over 2 A, all over 2 A. Explanation This is sung to the tune of Frare Jacques. It is the quadratic formula

Mnemonic device < is an arrow point shooting LEFT (LESS THAN)> Is an alligator's mouth opening to the larger

food (GREATER THAN). Explanation -9 1/2 Seventy-five percent isgreater then (50%) 1/2.

Solving abso lute value inequal i t ies

When solving absolute value inequalities: if the absolute value is greater than a number you must use theconjunction OR, when the absolute value is less than a number you must use the conjunction AND.To remember this just remember two words "GOR"-"LAND," which translateinto "G(greater)OR" and"L(less than)AND". When I introduce this topic I tell students that we are aboutto enter "GOR-LAND." (no political implications intended)

Mnemonic device NO GAINS ON SACRIFICE

Explanation NO GAINS ON SACRIFICE Is a Mnemonic to remember a Formula for Gain Ratio and SacrificeRatioGain Ratio = New Ratio - Old RatioSacrifice Ratio = Old Ratio - New RatioThis Slogan or Proverb isapplicable for all Parents who sacrifice for their Children without expecting any Gains for their sacrifices.

This Formula is usefull in application of Profit Sharing Ratio in case of a partnership firm.In case a newpartner is admitted into the Business then the old profit sharing is no longer valid and a new profit sharingratio is required. Besides Bringing capital into the business the new partner is also supposed to bringsome additional funds as gift for the old partners. This gift is called as Goodwill. So when the New Partner

brings Goodwill Amount into the business this amount is supposed to be distributed to the old partners inSacrifice Ratio.The Formula for Sacrifice Ratio BeingOld Ratio - New Ratio Similarly when any partnersretires from Partnership Firm the Outgoing partner is supposed to get his share in the Goodwill of thepartnership firm. In this case the Remaining partner [those who continue to be in Business and do notretire] are supposed to Contribute for Goodwill for the retiring partner. This Contribution is in Gain Ratiowhihc is calculated as followsNew Ratio - Old Ratio

Severa l Mnemonics for Equat ion Solv ing

Greg Smith: I use many SMATHism 's in class.

Here are several:

In equation solving, I emphasize that we always do "things" in pairs to maintain equality in mathematices.

In equation solving, I emphasize that we need only perform one opposite to "get rid of" something

.

For equation solving when we want to undo something, we use B. S. well actually double B. S. to

determine where to perform the operation the Back Side of Both Sides of the equation, or the Bottom

Side of Both Sides of the equation.

When you substitute, always substitute as a quantity.


14/83



The verb always becomes the equal sign in equations.

Formulas:

A=(pi)r^2 Apple pies r square

A=(pi)r*r Apple pies r roundC = (pi)d Cherry pie delight

I = p r t I "am" p-r-t pronounced I am pretty

rt = d rt are d pronounced retard

The three s's of equation solving: Substitute, simplify, solve


15/83




16/83



Trigonometry

Mnemonic device Some Old Hags Can't Always Hide Their Old Age

Explanation Trigonometry:Sine = opposite /HypotenuseCosine = Adjacent/HypotenuseTangent = Opposite / Adjacent

Mnemonic device "TSC! TSC!" said the math teacher.

"It's Over All Our Heads, AssHole," said the miscreant in the back. Explanation TSC is Tangent, Sine, Cosine.

Over: OppositeAll: AdjacentOur: OppositeHeads: Hypotenuse

Ass: AdjacentHole: Hypotenuse

It's not brilliant. I came up with it when I was about fifteen. But it worked.

Mnemonic device Some People Have Curly Black Hair Thickly Plasterd Back

Explanation To remember trigonometric functions by first letters.sine = perpendicular / hypotenuse.cosine = base / hypotenusetan = perpendicular / base

Mnemonic device

Some People Have Curly Black Hair Turning Purple Blue Explanation In Trignometry,Sine=Perpendicular/ Hypotinuous,Cosine= Base/ Hypotinuous,Tan=Perpendicular/Base

"SOHCAHTOA":

SOH: sine x = opposite side / hypotenuseCAH: cosine x = adjancent side / hypotenuseTOA: tangent x = opposite side / adjacent side

Mnemonic deviceSOH-CAH-TOA

Explanation Pronounced "soak a toe-uh"SOH ... Sine = Opposite leg divided by the Hypotenuse CAH ... Cosine =Adjacent leg divided by the Hypotenuse TOA ... Tangent = Opposite leg divided by the Adjacent leg

Many secondary school students remember the basic trigonometric functions with the phrase SOH-CAH-TOA (pronounced "soak a toe-uh").SOH ... Sine = Opposite leg divided by the Hypotenuse


17/83



CAH ... Cosine = Adjacent leg divided by the HypotenuseTOA ... Tangent = Opposite leg divided by the Adjacent leg

The sine, cosine, and tangent ratios in a right triangle can be remembered by representing them as

strings of letters, as in SOH-CAH-TOA:

Sine = Opposite ÷ Hypotenuse

Cosine = Adjacent ÷ Hypotenuse

Tangent = Opposite ÷ Adjacent

Also used is its reverse, OHSAHCOAT (pronounced oh-sah-coat). It is interpreted as OHS-AHC-OAT, as

shown below.

Opposite ÷ Hypotenuse = Sine

Adjacent ÷ Hypotenuse = Cosine

Opposite ÷ Adjacent = Tangent

One way to remember the letters is to sound them out phonetically (i.e. "SOHCAHTOA").[12] Another

method is to expand the letters into a phrase, such as

"Some Old Horses Chew Apples Happily Throughout Old Age" Or, as popularized at Cincinnati's St. Xavier High School, they use the simple phrase Sally Can

Tell : Oscar Has A Hard On Always. (It's been theorized that mnemonic devices that reference strongemotions, such as sexual feelings, imprint a stronger memory. However "Hat On" works equally well, butseems to be less memorable.)

Oscar Had A Heap Of Apples also works if you can remember the sine, cosine, tangent order. "One Hopes, And Hopes, On America" was widely taught to British schoolchildren during World

War II (the sine-cosine-tangent order was presumed). Not only was it a good mnemonic, it also served toreassure the children that Great Britain was not doomed to Nazi annihilation.

You can also remember the basic trigonometric functions with the phrase "Some Old Hippie,Caught Another Old hippie, Tripping On Acid"

For remembering the sign of trig functions in the quadrants:

All Suckers Take Calculus: in quadrants one through four

S | A---|---T | C

(This MUST be viewed in a non-proportional font):-----------------| || SIN-----COS |

| \ / || \ / || \ / || TAN--1--COT || | / \ | || | / \ | || |/ \| || SEC CSC || |

http://en.wikipedia.org/wiki/Trigonometry#cite_note-11http://en.wikipedia.org/wiki/Trigonometry#cite_note-11http://en.wikipedia.org/wiki/Trigonometry#cite_note-11http://www.chemistrydaily.com/chemistry/Cincinnatihttp://www.chemistrydaily.com/chemistry/St._Xavier_High_Schoolhttp://www.chemistrydaily.com/chemistry/Britishhttp://www.chemistrydaily.com/chemistry/World_War_IIhttp://www.chemistrydaily.com/chemistry/World_War_IIhttp://www.chemistrydaily.com/chemistry/Great_Britainhttp://www.chemistrydaily.com/chemistry/Nazihttp://www.chemistrydaily.com/chemistry/Nazihttp://www.chemistrydaily.com/chemistry/Great_Britainhttp://www.chemistrydaily.com/chemistry/World_War_IIhttp://www.chemistrydaily.com/chemistry/World_War_IIhttp://www.chemistrydaily.com/chemistry/Britishhttp://www.chemistrydaily.com/chemistry/St._Xavier_High_Schoolhttp://www.chemistrydaily.com/chemistry/Cincinnatihttp://en.wikipedia.org/wiki/Trigonometry#cite_note-11


18/83



-----------------

(SIN TAN SEC on left, CO-functions on right, 1 in the middle)

Using this chart (I just look at it in my head) you can remember the following things:

Across the 1:1/SIN=CSC or 1/CSC=SIN1/TAN=COT or 1/COT=TAN1/SEC=COS or 1/COS=SEC

Down any triangle:SIN^2+COS^2=1TAN^2+1 =SEC^2

1+COT^2=CSC^2

Up any triangle:SEC^2-1 =TAN^2 or 1+TAN^2=SEC^2CSC^2-1 =COT^2 or CSC^2-COT^2=1

1-SIN^2=COS^2 or 1-COS^2=SIN^2

A function and its two nearest CLOCKWISE or COUNTERCLOCKWISE neighbors around any edge ofthe square:

(listed starting at tan going clockwise)TAN=SIN/COSSIN=COS/COTCOS=COT/CSCCSC=SEC/TANSEC=TAN/SIN

(listed starting at tan going counter-clockwise)TAN=SEC/CSCSEC=CSC/COTCSC=COT/COS

COS=SIN/TANSIN=TAN/SEC

A function and its two neighbors around any edge of the square:(listed starting at tan going clockwise)

TAN=SIN*SECSIN=COS*TANCOS=COT*SINCSC=COT*SEC

SEC=TAN*CSCMnemonic device

CAST going clockwise starting from bottom right quadrant of graph axes. Always measure fromthe x axis to the angle line.

Explanation C is the area where the angle is postive for Cosine.A is the area where the angle is postive for all trigonometric functions.S is the area where the angle is positive for Sine.T is the area where the angle is positive for Tangent.

Mnemonic device All Saints Take Cocaine

Explanation


19/83



Trigonometric relation to remember All are positive in first quadrant, Sine is positive in second, Tangent ispositive in third and Cosine is positive in fourth

Sine? Cosine? Tangent?

1) An easy way to remember these relationships for trig functions and the right triangle. Just write down

this mnemonic:SOH - CAH - TOA

It is pronounced "so - ka - toe - ah".

The SOH stands for "Sine of an angle is Opposite over Hypotenuse."

The CAH stands for "Cosine of an angle is Adjacent over Hypotenuse."

The TOA stands for "Tangent of an angle is Opposite over Adjacent."

Thanks Bob H.

2) Opposite /(over) Adjacent = TanOpposite /(over) Hypotenuse = Sine

Adjacent /(over) Hypotenuse = Cosine

To remember this just learn the following phrase:One Ancient Teacher

Of History SworeAt His Class

Geometry

POLAR COORDINATES! WAYAYAY SIN!

Mnemonic device All Students Take Calculus

Explanation In quadrant I All trigonometric functions are positive; in quadrant II only Sine is; in quadrant III onlyTangent is; and in quadrant IV only Cosine is.

Mnemonic device Add Suka To Coffee



20/83



Mnemonic device Ang Sarap Talaga ng Cobra


Mnemonic device pe"rim"e t er

Explanation The t looks like a plus sign; therefore you add the rim (sides)

Mnemonic device2(Little Willy)+ 2(Lost His)+ 2(White Hat)

Explanation surface area of a rectangle:2LW+2LH+2WH

Mnemonic devicepahinge ng email add para ma e=a/d = c/a sa facebook

Explanation eccentricity

Calculus

For remembering the order of taking the derivative of a quotient in calculus, the phrase "ho-di-hi,

hi-di-ho, ho-ho" can be useful, where ho means the bottom, hi means the top, and di means the

derivative. So,

Another phrase that one may use is: "Bottom d Top, Top d bottom", where "d" stands for derivative

(note that this mnemonic does not include the crucial dividing by the bottom squared). Another phrase

memorable for sounding like a square dance is "low d high less high d low, draw the line and square

below."

Differential Calculus

Santa Claus mnemonicQuotient rule for derivatives ala Cab Calloway: Hodehi minus hideho over hoho.

Is dc negative?

Means Integrate Sine / Differentiate cos gives negative

Differential Equation

Mnemonic device Yes p dx equals sques p dx dx

Y times e raised to the integral of pdx equals integral of q times e raise to intgral of pdx dx Explanation Solution of Linear Differential Equation


21/83



Probability and Statistics

Mnemonic device Mean, M-E-A-N,Add the numbers, then,Count the numbers and divide,Mean, M-E-A-N.

Explanation Helps students remember the steps to find the mean.To remember how to find the mean, or average of agroup of numbers, sing this song to the tune of "Row, Row, Row Your Boat".

Mnemonic device MEAN means the Average.MODE is the Most frequent.MEDIAN is the middle in a numerically

ordered set of data.Range is all #'s that are located on the number line between the highest &lowest data. Explanation Mean - Add all data & use this sum as your dividend when you divide by the total number of data in theset.Mode- There is NO MODE UNLESS one and only one number appears more than any other numberin the data set!Median - There will be two ordinal numbers in the middle of an even set of data. Find themean / average. This quotient may be a decimal number but there can be ONLY ONE MEDIANNUMBER!Range - Simply subtract the lowest data # from the highest data #. Note: You usually do notinclude the extremes unless you are asked to give the range of prices. Ex. Dresses are - $48, $50. $77.

$98. In this case, the range of prices is from $48.00 to $98.00 and does include the two extremes.Remembering the methods of finding averages

Four methods of finding averages… Mode - is the number (or numbers) that appears most frequently in a set.Median - is the number exactly in the middle when a set of numbers is listed in order.Mean - is the sum of a set of numbers, divided by the number of numbers in the set.Range - is the difference between the highest and lowest numbers in a set.

Here is the way to remember these four methods of finding averages…

Medium-Range Mean Model


22/83



ELECTRONICS

DISCO - in Dc analysis, Inductor Short, Capacitor Open

Sa DC hihilahin lang yung schematic symbol. Bali yung inductor -oooo- pag hinila shorted -------- ... ungcapacitor -||- pag hinila open -| |- same sa steady state response. Pwede din gamitin yung schematicsymbol para sa capacitor blocks dc, inductor blocks ac.

Electricity & Magnetism

Maxwell Relations

A mnemonic used by physics students to remember the Maxwell relations in thermodynamics is"Good Physicists Have Studied Under Very Fine Teachers",which helps them remember the order of the variables in the square, in clockwise direction.Another mnemonic used here is

"Valid Facts and Theoretical Understanding Generate Solutions to Hard Problems",which gives the letter in the normal left to right writing direction.

Mnemonic device Jejemon for Ferromagnetic and Jejebuster for Ferrimagnetic

Explanation Ferromagnetism (all domains align in parallel) and Ferrimagnetism (some domain are anti-parallel)ECE Reviewee Mnemonics Voltage is to Electric Field, Current is to Magnetic Field

http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057


23/83



DC/AC Circuits

Ohm's Law

Virgins Are Rare

for: volts = amps x resistance

E = Volts

I = Current (Amperes)

R = Resistance

I = E/R or Current = Voltage / Resistance

E = I*R or Voltage = Current * Resistance

R = V/E or Resistance = Voltage / Current

The Indian sees the Eagle Over the River

_________E__________

_____I_________R____

Sort of an Ohm's Law Mnemonic

Voltage Formula?

Voltage = Current x Resistance VladImiR Putin (V = IR) Voodoo Doll = Curse

x Revenge

ICE - ELI :) Inductor Current LagsVoltage, Capacitor Current LeadsVoltage

ELI the ICE man


24/83



E ( L ) IVoltage leads Current in an Inductor

I ( C ) ECurrent Leads Voltage in a Capacitor

For current and voltage phase relation in capacitors and inductors

CIVIL

C I V I L Capacitor Current Voltage Current Inductor

in a capacitor, current lead voltage voltage leads current in an inductor

Current Leads or Lags Voltage in Reactive Circuits

Whether current leads voltage or lags it in reactive circuits.In inductive ('L') circuits, voltage ('E') leads current ('I'), hence 'E L I'.In capacitive ('C') circuits, it's the other way, so 'I C E'.

ELI the ICE man

Mnemonic device Twinkle Twinkle Little Star Power equals I squared R

Explanation Power in watts = V * V * I(or in SI P=U*I)


25/83



Energy ConversionEnergy Transferred

Energy Transferred = Potential Difference x Charge

E.T's Phone CallsLeft and Right Hand Rules

Flemming's Left and Right Hand Rules:

To remember which rule to apply for finding the relationship between motion and magnetic field

Generightor : ie use Flemming's Right hand rule for Generators; and Left hand for motors

Losses in a Transformer

Assuming a standard iron or ferrite (ie not air) cored

Transformer:

Hysteresis Eddy Magnetic ElectricalCopper : HEMEC


26/83



Semiconductor Theory

Parts of an Atom

Protons

ElectronsNeutrons

PEN

BIG PAABoron, Indium, Gallium (all three are trivalent)Phosphorus, Antimony, Arsenic (pentavalents)

ECE Reviewee Mnemonics Impurities:

BIG PAA

Trivalent:B-oron

I-ndium

G-allium

(BIG is associated with number 3)

P-hosporous

A-rsenic

A-ntimony

(P sa umpisa ng PAA is Penta)

Electronic Devices Fundamentals

Resistor color code:

Bad Boys Rape Only Young Girls But Violeta Gives Willingly Grob Said Nothing

Black Boys Rape Our Young Girls But Virgins Give Willingly.Get Some Now! Black Boys Raped Our Young Girl But Violeta Gave Willingly, Grabe Siya Noh?! Bad boys r un our young girls behind victory garden walls Big boys r ace our young girls but Violet generally wins. Big brown r abbits often yield great big vocal groans when gingerly slapped The phrase "Bad Boys Rape Our Young Girls But Violet Gives Willingly" but is used to remember

the electronic color codes of resistors, capacitors and other electronic components. A milder version is"Bright Boys Rave Over Young Girls But Veto Getting Wed."

"Black Bastard Raped Our Young Girl, Bloody Virginity Gone West"

For EIA electronic color code: Bad beer rots our young guts but vodka goes well – get some now Bad boys r un our young girls behind victory garden walls. Bad boys r ape our young girls but Violet gives willingly. Big boys r ace our young girls but Violet generally wins.

Big brown r abbits often yield great big vocal groans when gingerly slapped

Bak BRO, Yeah Greasy Blubber's Very Grabable, Why? B.B. ROY of Great Britan has Very Good Wife

Bye Bye Rosie Off You Go Birmingham Via Great Western Bye Bye Rosie Off You Go Bristol Via Great Western

http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.chemistrydaily.com/chemistry/Electronic_color_codehttp://www.chemistrydaily.com/chemistry/Resistorhttp://www.chemistrydaily.com/chemistry/Capacitorhttp://en.wikipedia.org/wiki/Electronic_color_codehttp://en.wikipedia.org/wiki/List_of_electronic_color_code_mnemonicshttp://en.wikipedia.org/wiki/List_of_electronic_color_code_mnemonicshttp://en.wikipedia.org/wiki/List_of_electronic_color_code_mnemonicshttp://en.wikipedia.org/wiki/Birminghamhttp://en.wikipedia.org/wiki/Birminghamhttp://en.wikipedia.org/wiki/Birminghamhttp://en.wikipedia.org/wiki/Bristolhttp://en.wikipedia.org/wiki/Bristolhttp://en.wikipedia.org/wiki/Bristolhttp://en.wikipedia.org/wiki/Bristolhttp://en.wikipedia.org/wiki/Birminghamhttp://en.wikipedia.org/wiki/List_of_electronic_color_code_mnemonicshttp://en.wikipedia.org/wiki/Electronic_color_codehttp://www.chemistrydaily.com/chemistry/Capacitorhttp://www.chemistrydaily.com/chemistry/Resistorhttp://www.chemistrydaily.com/chemistry/Electronic_color_codehttp://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057


27/83



Bye Bye Rosie Off You Go do Become a Very Good Wife Bill Brown Realized Only Yesterday Good Boys Value Good Work

Order of Colors of Resistors

Electronic resistors have colored bands on them to denote their level of resistance. Each color represents

a number from 0 to 9. In the order of the mnemonic:

Bad Boys Ruin Our Young Girls, But Violet Goes Willingly

Bad Black - 0 Girls Green - 5

Boys Brown - 1 But Blue - 6

Ruin Red - 2 Violet Violet - 7

Our Orange - 3 Goes Grey - 8

Young Yellow - 4 Willingly White - 9

Better Be Right Or Your Great Big Venture Goes WestBad Boys Rape Our Young Girls, But Violet Goes Willingly

Bad Boys Rape Our Young Girls Behind Victory Garden WallsBad Beer Rots Our Young Guts, But Vodka Goes Well.

Bad Boys Rough Our Young Girls, But Violet Goes Willingly

Mnemonic device Better Be Right Or Your Great Big Venture Goes West

Explanation Ohms value of the color bands of resistors (dark first, light last) Color first&second bands third band Black

0 .0 Brown 1 0 Red 2 00 Orange 3000 Yellow 4 0,000 Green 5 00,000 Blue 6

000,000 Violet 7 0,000,000 Grey 8 00,000,000 White 9000,000,000

Mnemonic device Bad Boys Rape Our Young Girls But Violet Gives Willingly

Explanation To remember the resistor color code (Rarely used now that the world has gone surface mount) Mnemonic device

Bad Boys Rape Our Young Girls But Violet Gives Willingly. Explanation For color bands on transisiters. Black, Brown, Red, Orange, Yellow, Green, Blue, Violet Gold, White

Mnemonic device Bad Booze Rots Our Young Guts, But Vodka Goes Well

Explanation Resistor color band digit order: Black [0], Brown [1], Red [2], Orange [3], Yellow [4], Green [5], Blue [6],Violet [7], Gray [8], and White[9].

Mnemonic device Better Be Ready Or Your Great Big Venture Goes West.


28/83



Explanation It is the resistor color code:Black, Brown, Red, Orange, Yellow, Green, Blue, Violet, Gray, White.Numerically 0-9 to get the value of a resistor via the color coded bands.(From an old Boy Scout book onElectricity or Electronics)

Also note that red through violet are the colors of the rainbow (in order) although the ROY G. BIVmnemonic for rainbow colors includes indigo between blue and violet.

CapacitorMnemonic device

yung AC makakadaan sa capacitor kasi umiilag..kaya high pass..

Transistors

Pee iN the Pot (PNP)For transistors: to remember which one has the arrow pointingtoward the intersection of the connections.

Transistor: ( use with electronic standard symbol)

PNP - Pasok Na PasokNPN - NaPalabas Na

NaPasok NaECE Reviewee Mnemonics PNP - Pasok Na Pasok, NPN - Na

Pasok Na (so lalabas na sya), reminder lang :)

Transistor configuration: ACE, BCB, GEB

ACE => Alpha = iC/iE BCB => Beta = iC/iB GEB => Gamma = iE/iB

FIFO - First In First OutLILO - Last In Last Out

Computer Principles

Mnemonics in computer science tend to be less pervasive as most abbreviations are brief. Some termsstill warrant a mnemonic such as People Can't Memorize Computer Industry Acronyms (PCMCIA) PCMCIA:President Clinton Makes Cornbread In Arkansas

Through the 1990s, whenever I heard about ISDN, I always thought "It Still Does Nothing."

It's because the standard documents for ISDN came out around 10 years before you could actually buyany product. When Broadband ISDN came out (B-ISDN) there was around 3 years betweenstandard and product, and we knew that as "But It Still Does Nothing".

For the order of declarations in Pascal:Let's Cook Textured Vegetable ProteinFor: Labels, Constants, Types, Variables, Procedures

Mnemonic deviceHow To Make Love

http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://en.wikipedia.org/wiki/PCMCIAhttp://en.wikipedia.org/wiki/PCMCIAhttp://en.wikipedia.org/wiki/PCMCIAhttp://en.wikipedia.org/wiki/PCMCIAhttp://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057


29/83



Explanation A mnemonic for the correct spelling of the word 'HTML' (hyper text markup language) To remember thespelling of html, instead of hmlt or hltm.

Mnemonic device People Cannot Memorize Computer Industry Acronyms

Explanation

The PCMCIA is an acronym for Personal Computer Memory Card International Association (also hasbeen known as Peripheral Component Microchannel Interconnect Architecture (IBM)). Typically they arereferred to as PC Cards for simplicity.

PC Cards

Personal Computer Memory Card International Association:

People Cannot Memorize Computer Industry AcronymsPeople Cannot Make Clear, Intuitive Acronyms

Personal Computer Manufacturers Can't Invent Acronyms

The PCMCIA also has been known as Peripheral Component Microchannel Interconnect Architecture(IBM). Typically they are referred to as PC Cards for simplicity.

Mnemonic device LoVe HAte (LVHA)

Explanation In CSS the correct sequence to declare pseudo-selectors of anchors:

Link, Visited, Hover, Active

Cascading Style Sheets

When designing a page using CSS, the order used to design links is:Link, Visited, Hover, Active:

LoVe HAte

Top, Right, Bottom, Left:

TRBL (TRouBLe)Tommy Ran By Lucy

("LoVe HAte" indicates the correct order to specify the link state pseudo-classes in Cascading StyleSheets. "TRBL" indicates the correct order to set margins or padding.)

Mnemonic device Every Rabbit Associates Kindly With Gophers

Explanation 6 Step Process for drawing an ER schema.

Identify: Entities, Relationships, Attributes, Key constraints, Weak entities, Generalizations Mnemonic device

He Plays Ball Explanation Turning off a computerHold Power Button

Mnemonic device Raising Elephants Is So Utterly Boring


30/83



Explanation In Linux, pressing Ctrl+Alt+SysRq (Print Screen, on modern keyboards), releasing SysRq, and, stillholding Alt, pressing R E I S U B in that order (with a slight pause between each) will reboot even themost stubbornly frozen system.

This works because R E I S U B are the magic SysRq keys that correspond to: resetting the keyboardstate, sending SIGTERM to all processes, sending SIGKILL to all running processes, synchronizing allfilesystems, unmounting all filesystems, and rebooting.

Networknames translation to IP-adresses

Cute White Babes Loves Hairy Dogs

The order for translating networknames to IP-adresses:

Cache

WINS

Broadcast

LMhosts

HostsDNS

Important Keystroke Sequence in Linux

Raising Skinny Elephants Is Utterly Boring

"Raising Skinny Elephants Is Utterly Boring" is a mnemonic device for remembering a particularly

important keystroke sequence in Linux. In the event of a total system freeze up, this is the failsafe way to

safely reboot a near-frozen computer.

Usage

The first two key sequences to deal with a frozen machine are:

Alt + Ctrl + to enter a command prompt. Normally the function keys F1 to F6 can be used.

Control-Alt-Delete. This performs a regular shutdown, if possible, which allows running services to shut

down normally.

Using 'RSEIUB' follows these two steps as a last resort. The squence is performed as follows: While

holding Alt and SysRq, press they keys R, S, E, I, U, and then B, in sequence, leaving some time

between keystrokes.

Meaning


31/83



R places the keyboard in raw mode

S synchronizes the disk

E terminates all processes

I kills all processes

U remounts all filesystems read-only

B reboots the machine

ECE Reviewee Mnemonics RS NAND undefined states-LOW LOW-(think of maLANDi)

RS NOR undefined states-HIGH HIGH-(think of HORny)



32/83



GEAS

ChemistrySentences to remember the elements

Periodic Table

Group 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Period

1 H He

2 Li Be B C N O F Ne

3 Na Mg Al Si P S Cl Ar

4 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr

5 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe

6 Cs Ba * Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn

7 Fr Ra ** Rf Ha Sg Ns Hs Mt Uun Uuu

/

Lanthanides * La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu

Actinides ** Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr

bron: Carcamels Homepage

Mnemonics:1) First eighteen elements in the periodic table:

Here He Lies Beneath Bed Clothes, Nothing On, Feeling Nervous. Naughty Margaret Always Sighs,

"Please Stop Clowning Around."

(H He Li Be B C N O F Ne Na Mg Al Si P S Cl Ar.)

2) First twenty elements in the periodic table:Hi Hello Little Beryll Brown Cracking Nuts On Friday . Nellie's Naughty Magpie Always Sings PopSongs Clearly After Killing Cathy

(H He Li Be B C N O F Ne Na Mg Al Si P S Cl Ar K Ca.)

Periodic Table

http://surf.to/carcamelhttp://surf.to/carcamelhttp://surf.to/carcamelhttp://surf.to/carcamel


33/83



Memorize these phrases to learn the first eighteen elements – when you are done, make up your ownphrases for some of the others.Happy Henry Likes Beer But Could Not Obtain Food

Happy Henry Likes Beer But Could Not Obtain Four NutsThat gives us the first 10: Hydrogen, Helium, Lithium, Beryllium, Boron, Carbon, Nitrogen, Oxygen, Fluorine, Neon.

Naughty Magpies Always Sing Perfect Songs Clawing AntsThat gives us the next 8: Sodium (NA), Magnesium, Aluminum, Silicon, Phosphorous, Sulfur, Chlorine, Argon

group 1: HaLiNa Kayo Cesar at Ruby sa France! (H,Li,K,Cs,Rb,Fr)group 2: Be, MgCano ka Sr. BaRat?group 14: Cool Si General Sn. Pablogroup 16: O! Sarap ng Senegang Tenapay at Potogrouop 18: HeNela ni Arlene ang Krayola ni Xena at Rona

Periodic Table

Hydrogen He

Lies Beneath Bright Coloured Nights Of Flame NeonNatures Magicians All Sing Psalms So Clearly ArgonKing Califf Scatters Titles Vainly Crowning Men Fee Coh & Ni CuZn Gar & Gee As Seven Brothers Krypton

Note CuZn is pronounced Cousin, Ni is pronounced Knee.

First row transition elements:

Some Tasty Virgins Can Make Fairly Calm Nice Chemists Zealous!Sc Ti V Cr Mn Fe Co Ni Cu Zn

Scandinavian television corrupts many french coalmen's nieces and cousinsSc Ti V Cr Mn Fe Co Ni Cu Zn

Scottish Vicars Make Fur Coats and KnickersSc Ti V Cr Mn Fe Co Ni Cu Zn

Stop the very crazy man from coming near cute zoosSc Ti V Cr Mn Fe Co Ni Cu Zn

and

Your zoo needs men to rule rhinos, panthers, and cheetahsYt Zr Nb Mo Tc Ru Rh Pd Ag Cd

SCrub TIl Very CRean... MaNy FEmales COntain NIce CUrvy ZoNes

And going downward (VIII B), NIce PaDded ParTs,and the money (I B) Copper, silver and gold that you have to pay.and after all that, (II B) If you're a Cad, you're lucky if the date endswith a Hug

The Group VIII inert gases (helium, neon, argon, xenon and radon) may be recalled by thesentence "Heaven Never Ar sked Kr iegspiel's eXtra Rent"

http://listverse.com/2007/12/17/top-10-scientific-mnemonics/http://listverse.com/2007/12/17/top-10-scientific-mnemonics/http://listverse.com/2007/12/17/top-10-scientific-mnemonics/http://listverse.com/2007/12/17/top-10-scientific-mnemonics/http://listverse.com/2007/12/17/top-10-scientific-mnemonics/http://listverse.com/2007/12/17/top-10-scientific-mnemonics/http://listverse.com/2007/12/17/top-10-scientific-mnemonics/http://listverse.com/2007/12/17/top-10-scientific-mnemonics/


34/83



Ito yung groupings ng elements (you need to know their

general properties):

Alkali Metal

Alkaline Earth

Basic Metal

Halogen

Noble Gas

Non-Metal

Rare Earth

Semi-Metal

Transition Metal

Mnemonic device How He Lies Because Boys Can Not Open Flowers

Explanation First nine elements in the Periodic Table

Mnemonic device Harry He Likes Beer But CanNot Obtain Food

Explanation To remember the first few elements of the Periodic Table. Mnemonic device

Here Lies Benjamin Bold; Cry Not Old Friend; Needlessly Nature Magnifies All Simple PeopleSometimes, Clots and Kings. Explanation To remember the first few elements of the Periodic Table.Mnemonic device

Hi Hello Little Beryll Brown Cracking Nuts On Friday. Nellie's Naughty Magpie Always Sings PopSongs Clearly After Killing Cathy Explanation Periodic Table - Atomic Weight 1st Twenty ElementsHydrogen 1, Helium 2, Lithium 3, Beryllium 4, Boron5, Carbon 6, Nitrogen 7, Oxygen 8, Flourine 9, Neon 10, Sodium 11, Magnesium 12, Aluminium 13,Silicon 14, Phosphorous 15, Sulphur 16, Chlorine 17, Argon 18, Potasium 19, Calcium 20

Mnemonic device The Periodic Table (contributors include Bob Gayhart and Dean Campbell) Group 1A (H Li Na K

Rb Cs Fr): -Highly Nasty Kids Rub Cats Fur -Hans liebt Natuerliche Kaese reibt (ueber)(c)zentralsued Frankreich. (!) Group 2A (Be Mg Ca Sr Ba Ra): -Bearded Muggers Came StraightBack Rapidly. -Beer Mugs Can Serve Bar Rats. Group 3 (B Al Ga In Tl): -Big Al Garner's In Trouble.-Big All Gave in Tulsa. -Big Al Gave Incomplete Totals. -Big Al Gave Innocent Toys. -Bob AllenGave Indians Tennis Lessons. -Bears Always Give Indians Trouble. Group 4A (C Si Ge Sn Pb): -

Can Silly Germans Snatch Lead? -Conniving Sisters Get Snotty Playboys. -Can Si Get Snuckeredat the Pub? Group 5 (N P As Sb Bi): -New Popes Assign Subordinate Bishops. -Never Put Arsenicin Silver Bullet Beer. Group 6A (O S Se Te Po): -Oil is slicker with STP. -Old Soldiers Seem TerriblyPolluted. -Oversized Sailors Sell and Tell about Polo cologne. -Oh, she sells the poles. Group 7A(F Cl Br I At): -Frank Cleverly Brought Indian Attire. -Fairy Clowns Broil Innocent Ants. -Fat ClydeBribed Innocent Arthur. -"Floor Cleaner Broken?" I asked. Group 8A (He Ne Ar Kr Xe Rn): -HeNever Arrived; Karen eXited with Ron. -He needs our crazy Xerox repairman. First Row TransitionMetals (Sc Ti V Cr Mn Fe Co Ni Cu Zn): -St. Vincent Cried "Mommy!" Feeling Cold Next to ColdZombies. -Scott Tips Very Counterfeit Money, Feels Cold Near Cubic Zircons. -Scary Tiny ViciousCreatures Mean Females Come Nightly to Club Z. -Scotty Vickerman Fee cony cousin. -Scott


35/83



tickled Vanna's cranium, manager Fred could not cut in. Second Row Transition Metals (Y Zr NbMo Tc Ru Rh Pd Ag Cd): -Yes sir, Nob. Most technicians rub Rod's pale silver Cadillac. Third RowTransition Metals (La Hf Ta W Re Os Ir Pt Au Hg): -Larry's half taken, Wendy reached out her plateaudibly, Helga. Lanthanides (Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu): -CaesarProcrastinated at the Nile, Permitting So Many Europeans (who were) Getting Turbid (and) Dying(of) Home Urges (erges?) To Yell "Lutetium!". -Cecil proudly named Pam, Sam, (and) Eugene.Good Tobin dyes hosiery early tomorrow yellow-blue. Actinides (Th Pa U Np Pu Am Cm Bk Cf EsFm Md No Lr): -Three planets: Uranus, Neptune, (and) Pluto. Amy cured Berkeley, California.Einstein (and) Fermi made noble laws. Explanation I think no explanation is needed to use that mnemonic.Its simple but effectiveMnemonic device

Please Stop Calling My African Zebra In Latin Class. Explanation Used to remember the reactivity series.Pottasium, Sodium, Calcium, Magnesium, Aluminium, Zinc, Iron, Lithium, CARBON. ECE Reviewee Mnemonics Grp 6 of Periodic Table:

Our Solid Sex Temporary Position- Oxygen, sulfur, selenium, tellurium, polonium

ECE Reviewee Mnemonics Group 7 of Period Table Mnemonic:

Friend, Cool ang Braso, Itlog, at Atay (Flourine Chlorine Bromine Iodine Astatine) ECE Reviewee Mnemonics Halogens:

For Clear and Bright Is Attractive (Fluorine, Chlorine, Bromine, Iodine, Astatine)..

ECE Reviewee Mnemonics ERRATUM:

Group 3 (pababa):

Baby AlaGa ni Inday at THALIA (Boron, Aluminim, Gallium, Indium, Thallium)

http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057


36/83



ECE Reviewee Mnemonics Periodic Table:

Group 1 (pababa):

HaLiNa Kayo Rubi at Cesar sa France (Hydrogen, Lithium, Sodium, Potassium, Rubidium, Cesium,

Francium)

Group 2 (pababa):

Be, MgCano kay Sr. BaRat? (Beryllium, Magnesium, Calcium, Strontium, Barium, Radium)

Group 3 (pababa):

Baby AlaGa ni Inday at Tita (Boron, Aluminim, Gallium, Indium, Titanium)

Group 4 (pababa):

Cool Si General Sn. Pablo (Carbon, Silicon, Germanium, Tin, Lead)

Group 5 (pababa):

Nay, Parang ASwang ANg Bisita (Nitrogen, Phosphorus, Arsenic, Antimony, Bismuth)

Group 6 (pababa):

O! Sarap ng SEnegang, TEnola at POto. (Oxygen, Sulfur, Selenium, Tellurium, Polonium)

Group 8 (pababa):

Henela ni Arlene ang Krayola ni Xena at Rona (Helium, Argon, Krypton, Xenon, Radon)

Electron Shells

To remember SPDF

Some

PeopleDon'tF***

"sticky paint dries fast"For the energy levels of electrons.

I have a relatively good one (albeit fairly useless) for remembering the order that the nuclearshells get filled up as you add more nucleons to the nucleus:

spuds if pug dish of pig

If you write it down and then cross out all of the vowels except for the final 'i' you get

spdsfpgdshfpig

and since you are worying about nuclear levels, you already know the spectroscopic notation:spdfghi s=0, p=1, ... so if you start numbering above these letters how many times the letter has occured,you get the principal quantum number, and angular momentum of the energy states in the order that theyare filled:

11121212312312 spdsfpgdshfpig



37/83



(Remember that in nuclear shells the angular momentum can be greater thanthe principal quantum number...)

spectrographic notation:

Sober Physicists Don't Find Giraffes Hiding In Kitchens.

Mnemonic device Sober Physicists Don't Find Giraffes Hiding In Kitchens

Explanation The order of atomic orbitals (s,p,d,f,g,h,i,k). After K, they're alphabetical. Electronic Configuration

Si Sally Pumasok Sa Pinto Si Daddy Pumasok Sa Dilim Paano Si Franky Daddy Paano Si Franky DaddyFranky Daddy Franky (Each letter corresponds to the shape fill it in with the principal quantum numberstart numbering S with 1, P with 2, D with 3, and F with 4)

"si sarah pumunta sa party. si daddy pumunta sa disco. pano si daddy?":

1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s 5d

Mnemonic device si sammy pumasok sa pinto. si daddy pumasok sa door. paano si fred daddy? paano si fred

daddy? paano fred daddy? Explanation 1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s 5f 5d 6p 7s 6f 6d 7p 7f 7dSimplified metal electronegativities:

Kill (K)Nasty (Na)Cats (Ca)Mangle (Mg) All (Al)

Zebras (Zn)Feed (Fe)Snarling (Sn)Plump (Pb)Hyenas (H)Curse (Cu)Hogs (Hg) Again (Ag) Audibly (Au)Please (Pt)

or

Pretty (potassium)Sally (sodium)Could (calcium)Marry (magnesium) A (Aluminium)Zulu (Zinc)In (Iron)Lovely (lead)Honalulu (hydrogen-reference)Causing (copper)


38/83



Strange (silver)Gazes (gold)

or

Pop (Potassium)Stars (Sodium)Can (Calcium)Make (Magnesium) All (Aluminium)Zombies (Zinc)In (Iron)Town (Tin)Lose (Lead)His (Hydrogen)Cool (Copper)

Then we remembered our favourite food addictive for the last 3 metals. (MSG)M (Mercury)S (Silver)

G (Gold)

Electrochemical/-lytical cells:

Two animals -- AN OX and a RED CAT (anode -> oxidation, cathode ->reduction)

RC cOlA (short for Royal Crown Cola):

Reduction occurs at the Cathode,Oxidation occurs at the Annode

In a cation, the electron has gone on va-cation.

Chemistry students use the phrase "LEO says GER" to keep the two halves of a redox processstraight, since the Loss of Electrons is Oxidation while the Gain of Electrons is Reduction. Anotherversion is the word "OIL-RIG", meaning Oxidation Is Loss, Reduction Is Gain (of electrons).

ORE is easier - oxidation is r emoval of electrons

Mnemonic deviceLEO GER

Explanation Chemistry students use the phrase "LEO says GER" to keep the two halves of a redox process straight,since the Loss of Electrons is Oxidation while the Gain of Electrons is Reduction.

Mnemonic device OIL RIG

Explanation O-xidation I-s L-oss (of electrons); R-eduction I-s G-ain (of electrons)Mnemonic device

LOANBRA Explanation

http://www.chemistrydaily.com/chemistry/Redoxhttp://www.chemistrydaily.com/chemistry/Redoxhttp://www.chemistrydaily.com/chemistry/Redoxhttp://www.chemistrydaily.com/chemistry/Redox


39/83



Left side Anode Negative ions attract this is used in electrodes

Blue litmus to Red litmus Acid

Mnemonic device LOAN

Explanation

Left side Oxidation Anode attracts Negative ions

Mnemonic device OIL RIG

Explanation Oxidation Is Loss Reduction Is Gain

ECE Reviewee Mnemonics OILRIG : Oxidation is Loss, Reduction is Gain of Electrons

Periodic TableDownward RightwardSize Inc Dec...Metallicity Inc Dec

Electron Affinity Dec IncElectronegativity Dec IncIonization Energy Dec Inc

Cations and Anions

Cations are pawsitive.

Cations are positive, while anions are negative:

The letter t in cation looks like a positive plus sign +: ca+ion Cations are pawsitive. An ANION is A Negative ION

Dicarboxilic Acids (electrodes)

REDuction at CAThode: RED CAT

Oxidation and reduction in the electrodes of an electrochemical cell:

Oxidation takes place at the anode (both start with vowels), reduction takes place at the cathode(both start with consonants).

REDuction at CAThode: RED CAT ANode for OXidation: AN OX



40/83



Oxidation and Reduction (electrons)

Acronyms for oxidation and reduction:

Oxidation Is Losing Electrons, Reduction Is Gaining Electrons: OIL RIG Electron Loss Means Oxidation: ELMO Losing Electrons Oxidation, Gaining Electrons Reduction: LEO the lion. GER! or LEO says GER

* Sa chem, sa redox:

"GEROA LEORA":

gain of electron reduction oxidizing agent, loss of electron oxidation reducingagent

Ideal Gas Law

Q: Why do gas molecules like to look into your window at night? A:Because they're PVnRT'ed. (pronounce: pivnerted)

OK, I'm ducking the tomatoes. :) :)

Pregnant Virgins Never Reveal the Truth

Gas law: Pure Virgins have Nice Round Tits -- PV = nRT The universal gas constant "PV/T" was remembered in the 1960's by saying "Pee" "Vee" over the"Telephone". Pee Vee was a television character in the 1960s that was always talking on the telephone.Reactivity series

Poisonous Snakes Can Make All Cats Zippy In The Lost House Capturing Special G PsPotassium, Sodium, Calcium, Magnesium, Aluminium, Carbon, Zinc, Iron, Tin, Lead, Hydrogen, Copper,Silver, Gold, Platinum. Or maybe this is too long winded. Alternatively, Lithium and Mercury may also beincluded: Peter's Simple Little Cousin Meta Crazy Zulu In The LonelyHut Carrying Money: Silver, Gold, Platinum.

http://en.wikipedia.org/wiki/Reactivity_serieshttp://en.wikipedia.org/wiki/Reactivity_series


41/83



The three elements that when combined with Hydrogen form Hyrdrogen Bonds, can bememorized by the following saying: "Hydrogens just want to have FON (Flourine, Oxygen, and Nitrogen)"This saying is loosely based off the song "Girls Just Want to Have Fun" by Cyndi Lauper. Diatomic elements can be memorized by using the phrase "Count HOFBrINCl" and also by thephrase "Have No Fear Of Ice Cold Beer "(Hydrogen, Oxygen, Flourine, Bromine, Iodine, Nitrogen, andChlorine).

Mnemonic device BrINClHOF (pronounced brinklehoff)

Explanation The diatomic molecules: Bromine, Nitrogen, Chlorine, Hydrogen, Oxygen, and Fluorine.

Diatomic Molecules

The elements Hydrogen, Nitrogen, Fluorine, Oxygen, Iodine, Chlorine, and Bromine are always found as

diatomic molecules:

HNFOIClBr HONClFIBr (say HONKLE-fibber) BrINClHOF (say Brinckle-hoff) Have No Fear Of Ice Cold Beer Never Have Fear Of Ice Cold Beer I Have No Bright Or Clever Friends ClIF H Bron HOFBrINCl Twins (twins because they exist in pairs) There are seven such elements. The first one is the first element Hydrogen; the rest form a 7 on

the periodic table: N, O, F across, then going down Cl, Br, I.

http://en.wikipedia.org/wiki/Diatomichttp://en.wikipedia.org/wiki/Diatomichttp://en.wikipedia.org/wiki/Diatomic


42/83



Mnemonic device kuh nuh cah mug al | zun feh sun pub | coo ag ooo plat

Explanation Reactivity series.K Na Ca Mg Al | Zn Fe Sn Pb | Cu Ag Au Pt

Organic Chemistry "My Enormous Penguin Bounces Pretty High" to remember the series of alkanes : Methane,

Ethane, Propane, Butane, Pentane, Hexane

Mnemonic device Memorize eternal propositions, but pension hectic happy occult nonsensical declarations

Explanation The underlined characters help you to memorize the first ten alkanes: methane, ethane, propane, butane,pentane, hexane, heptane, octane, nonane, decane Mnemonic device

Must Every PRefect Be PErfect Explanation

Used to remember the first five alkanes.Methane, Ethane, PRopane, Butane, PEntane Mnemonic device

Maggie Enjoys Pacifiers & Bottles Explanation Use Maggie from the Simpsons to remeber the first 4 alkanes/enes/ynes: Methane, Ethane, Propane,Butane

Mnemonic device Oh My Such Good Apple Pie

Explanation The first letters of "Oh My Such Good Apple Pie" correspond to those of the straight-chain dicarboxylicacids of carbon numbers two through seven; i.e., oxalic, malonic, succinic, glutaric, adipic, and picricacids

Dicarboxilic Acids

The sequence of dicarboxilic acids is Oxalic, Malonic, Succinic, Glutaric, Adipic, Pimelic:

Oh My Stars, Green Apples Oh My, Such Good Apple Pie

Mnemonic device Monarch Edward Prefers Birthday Parties His Highness Offers No Drinks

Explanation Meth, Eth, Prop, But, Pent, Hex, Hept, Oct, Non, Dec

Mnemonic device Do like an otter, add acid to water.

Explanation The order to combine acid and water.

Mnemonic device Acid to Water; All is Well.Water to Acid; What an Accident!

Explanation Use these two mnemonics to help remember that it is OK to add acid to water, but you may get anexplosion from the excess heat created by reversing the order of mixing the two.

Mnemonic device


43/83



Do what you Oughter, add acid to water! Explanation A reminder to only acid acid to water, and not water to acid.

Mnemonic device Tall Gene calls Florence at our quarters to correct dumbness.

Explanation Mohs scale of hardness: Talc gypsum calcite fluorite apatite orthoclase quartz topaz corundum diamond

Elements necessary for agriculture

The elements necessary for agriculture are:carbon, hydrogen, calcium, iron, magnesium, manganese, copper, molybdenum, chlorine, boron

C(see) Hopkins CaFe, Mighty-good Man, Cu(see your) Money, hope they are Closed or out of Business.

ECE Reviewee Mnemonics The Dennis Covert (memorial) Hydrocarbon Mnemonic:"Mother Eats Phone Books, Pink Hats, Suffers Oxygen Nitrogen Discomfort"

Methane, Ethane, Propane, Butane, Pentane, Hexane, Septane, Octane,Nonane, Decane.

I loved the mneumonic my senior chem class came up with a few years ago for the first six alkanes:

Monica excites President Bill, poor Hilary.

Unfortunately it's not as topical now.

Sheelagh Halstead

ECE Reviewee Mnemonics In order to remember the substitution order on a benzene ring, just have aROMP:

R = position of primary substuent #1O = Ortho = position #2M = Meta = position #3P = Para = position #4

Thus, Orthophenylphenol = 2-phenylphenol, and p-Bromobenzaldehyde =4-bromobenzaldehyde

ECE Reviewee Mnemonics The amino acids:

Hydrophilic Neutral: Girls Are Very Loving If Men Can Prepare Perfect Tea(Glycine, Alanine, Valine, Leucine, Isoleucine, Methionine, Cysteine,Proline, Phenylalanine, Tryptophan)

Positive: Alexander Graham Spoke Through (the) Telephone (Asparagine,Glutamine, Serine, Threonine, Tyrosine)

Neutral: Laurel And Hardy (Lysine, Arginine, Histidine)

Negative: Aspartate and Glutamate (all that's left. . . )

ECE Reviewee Mnemonics This one covers the Grignard alcohol formation reactions. I got it from one

http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057


44/83



of my Organic Chemistry profs, who claims to have found it in a drawer atRutgers University around 1976. He attributes it to F. Westheimer ofHarvard University.

(sung to the tune of "America The Beautiful")

Oh Grignard, the Beautiful

The carbonyl is polarized, The carbon end is plus. A nucleophile will thusattack The carbon nucleus. A Grignard yields an alcohol, Of types thereare but three; It makes a bond to correspond From C to shining C.

A Secondary's synthesis Requires an aldehyde. For Tertiary, a carbanion And ketone may collide. When Grignards meet H2CO The product's Primary.They stick like glue to CO2 Join C to lonely C.

ECE Reviewee Mnemonics For remembering the saturated dicarboxylic acids up to 10 carbons:Oh My, Such Good Apple Pie, Sweet As SugarFor: Oxalic, Malonic, Succinic, Glutaric, Adepic, Pimelic, Subaric,

Azelaic, Sebacic

ECE Reviewee Mnemonics Gibbs Energy:Giving Homework Tonight Sucks (G = H - TS)

PhysicsWhat does MKASK stand for?

May King Alfred Send Knights (mnemonic for Mass, Kilowatt-hour, Ampere, Seconds and Kilogram;physics SI units)

force/mass = AccelerationFather over Mother equals Anak (F/m=a)

converging and di-vergin.. makita mo pa lang alam mo na.. hahaaa! :)

ECE Reviewee Mnemonics Simple Harmonic Motion formulae:

f = (1/2pi) sqrt (g / L) for simple pendulum (dalawang pie, get Low!)f = (1/2pi) sqrt (g / H) for conical pendulum (dalawang pie, get High!)f = (1/2pi) sqrt (k / m) for springs with weights attached, (Ka Ma (may springs))f = (1/2pi) sqrt (a / x) for SHM. (fax!)

Thermodynamics

"Pag may CaViT GiPiT":

-(Charle's Law: Volume-Temp and Gay-Lussac's Law: Pressure-Temp)

Relationship between absolute and kinematic viscosity

Q: What's new (nu)? A: mu / rho

Q: What's new (nu)? A: c / lambda

http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057http://www.facebook.com/pages/ECE-Reviewee-Mnemonics/108019169257057


45/83



The equation for specific heat:q= CATManq = c_v * T * m

Maxwell relations

"Good Physicists Have Studied Under Very Fine Teachers", which helps remember the order of thevariables in the square, in clockwise direction. Another mnemonic used here is " Valid Facts andTheoretical Understanding Generate Solutions to Hard Problems", which gives the letter in the normal leftto right writing direction.

Strength of Materials

HardnessThe relative hardness of minerals is determined according to Mohs Scale, named after the Germanmineralogist,Friedrich Mohs, who devised it in 1812. In the original Mohs Scale, ten minerals werearranged in order of increasing hardness and were assigned the numbers one to ten. These ten mineralsare shown in the first column of the table below:

Mohs Substance Mohs Number Common Substance Simple Classification Talc 1

SOFT Gypsum 2

2.5 Fingernail

Calcite 3

MEDIUM Fluorite 4 'Copper' coin 1

Apatite 5

5.5 Knife blade or glass

Orthoclase (feldspar) 6

HARD

6.5 Steel file

Quartz 7

Topaz 8

Corundum (emery) 9

Diamond 10

A substance with a higher Mohs number is capable of scratching a substance with a lower number.The order of these minerals can be remembered using themnemonic: The Girls Can Flirt And Other Q ueer ThingsCan Do .

Mnemonic device The Greedy Child Found All Our Feathery Quills To Copy Documents

Explanation Mnemonic device for Mohs Hardness Scale. Talc, Gypsum, Calcite, Flourite, Apatite, OrthocleseFledspar, Quartz, Topaz, Corundum, and Diamond.

Mnemonic device Tommy

GaveCarolineFourApples

http://www.chemistrydaily.com/chemistry/Maxwell_relationshttp://www.bbc.co.uk/go/search/ext/_auto/-/http:/