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Light and Light

Optics InquiryBySabrina

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Questions

MainQuestion:

Isitpossibletomakeacameranoteffectedbydifferentlight?

SubQuestions:

Whatarethedifferentkindsoflight?Howdoesacamerawork?

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Whatarethedifferent

KindsofLight?Themainandmostcommonlyusedtypeslightsare:

-Sunlight

-IncandescentLight

-FluorescentLight-LEDlight

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AboutSunlight

Ittakessunlightapproximately499.0

secondtoreachthesurfaceoftheearth.

Sunlightisafrequentspectrumofelectromagneticradiation.

Whenthesunlightpassesthroughtheatmospheremostoftheradiationgetsfilteredout.

Thesunlightweseeisclearwithnoadditionalcolorsortingesinit.

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About

Incandescentlight

TherearedifferentkindsofIncandescentwhichinclude:

-Mazda:Screwinlightbulb

-Neodymium:Fullspectrumbulbs

-QuartzHalogenSystems

-HeatLampSystems

Allmayveryinlumenintensities

Alloftheseformsofincandescentlightingfallundertheinferredsectionofthespectrum.

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AboutIncandescentlight

Onthevisiblespectrumincandescentlightreachesapeekof10,000angstroms.Onthespectrumthismeansthatthemajorityoftheoutputisinthelower,yellowtoredsegmentsofthevisiblespectrum.

Thismeans2things: -Givesoffandprovidesalargeramountofheat. Toenhancethisfeaturemanufacturerswillcoatthebulbwithadiffusion

materialthatscattersthecoolerandhigherspectrumcolors.Thiscausesamoreintensewarmth.

-Thereisaslightyellowand/ororangetingetothelightscolor. Becauseofthisfeaturemanufacturerslinethelightbulbwithawhite

materialthatallowsthewarmthgivenofftocontinuebutwillcausethelighttoappearasawhiterlight.

Sabrina Veckenstedt Thursday, April 22, 2010 12:00:32 PM MT

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AboutFluorescentlight

Fluorescentlightonthevisiblespectrumlieswithinthebluesandgreens.Thismeansthatunlikeincandescentlightitdoesntproducelargeamountsofheat.

Themainelementusedinafluorescentlightismercury.Topowerthelightbulbelectronsandatomsarechargedbyanelectricalcircuit.Whencontactismadewiththemercuryitconvertsintoagas.Whentheycompletetheirchargetheyreleasealight

photon.

Becauseoftheenergycreatedformthisprocess,fluorescentlightsare4-6timesmorepowerfulthanincandescentlamps.

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AboutLEDlights

LEDsarehighefficientenergysavinglights.Theylastupto100timeslongerthanincandescentlight.

LEDstandsforLightEmittingDiodes.Diodesareasemiconductordevicewithtwoterminalsonlyallowingtheflowofacurrentinonedirection.

OnthevisiblespectrumLEDlightsaremoreofftotherightside,thismeansthatthistypeoflightissimilartoafluorescentlightbybeingintheblueandgreens.Thiscausesthelighttoproducelittleheat.

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HowdoCamerasWork

Abasiccameraconsistsofthreemainparts:anopticallens,a

chemicalelement(thefilm),amechanicalelement(thecameraitself).

Anopticalcomponentofacameraisthelens.Thelensisacurvedpieceofglasswhichtakesthebeamsbouncingoffanobjectandredirectsthemsotheycometogethertoformthe

imageinfrontofthemonthecenterofthefilm.

Thefilmisastripofplasticwithtinygrainsspreadalloverit.

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Howdoesacamera

work?Whenlightmakescontactwiththegrainstheygothroughachemicalreactioncreatingarecordingoftheimagethroughthepatternofthelight.

Dependingonthetypeoflightanditsintensitythereactionwillhaveadifferentresult.Causingthepicturetoeitherbelighter,darkerorblurry.

Thefilmwillthemgetprofessionallydevelopedintoapicture.

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ConclusionForMain

Question Afterdoingresearchregardingthedifferentlightweencountereverydayandhowacameraworks.Ihaveconcludedthatno,itisnotpossibletocreateacameranoteffectedbydifferentlight.Theoldcamerassuchasthefully

manualonescreatetheimagebyrecordingthelightpatternsmadeonafilm.Dependingonthetypeoflightandintensitythefilmwillrecordthelightdifferently.Thelightcouldcauseproblemssuchasbrightness,blurringetc.Withmorerecentcamerasthatdonotusefilmsuchasacannonforexamplearestilleffectedbylightinthesameway.Withallthetechnologyputintothemwestillfind

loopholessuchasdifferentsettingsinwhichallowthecameratoadapttothelightingatthegivenmoment.Becauseapictureiscapturedwithlightbouncingoffanobjectintoacameraitsintensityhasadefiniteeffectonthepicturesoutcome.SoIconcludethat,no,itisnotpossibletocreateacameranoteffectedbydifferentlight.

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Bibliography http://users.mis.net/~pthrush/lighting/glow.html http://electronics.howstuffworks.com/camera5.htm http://electronics.howstuffworks.com/camera4.htm http://electronics.howstuffworks.com/camera3.htm http://electronics.howstuffworks.com/camera2.htm http://electronics.howstuffworks.com/camera1.htm http://www.diyhomeguide.com/lighting/fluorescent http://www.ehow.com/ https://reader010.{domain}/reader010/html5/0531/5b1020e1a1319/5b1020e820529.png http://files.myopera.com/Noah503935/blog/Light%20bulb.png http://www.core77.com/hack2school/img/cc_camera.jpg

Sabrina Veckenstedt Thursday, April 22, 2010 12:00:32 PM MT