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Light and Light
Optics InquiryBySabrina
Sabrina Veckenstedt Thursday, April 22, 2010 12:00:32 PM MT
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Questions
MainQuestion:
Isitpossibletomakeacameranoteffectedbydifferentlight?
SubQuestions:
Whatarethedifferentkindsoflight?Howdoesacamerawork?
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Whatarethedifferent
KindsofLight?Themainandmostcommonlyusedtypeslightsare:
-Sunlight
-IncandescentLight
-FluorescentLight-LEDlight
Sabrina Veckenstedt Thursday, April 22, 2010 12:00:32 PM MT
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AboutSunlight
Ittakessunlightapproximately499.0
secondtoreachthesurfaceoftheearth.
Sunlightisafrequentspectrumofelectromagneticradiation.
Whenthesunlightpassesthroughtheatmospheremostoftheradiationgetsfilteredout.
Thesunlightweseeisclearwithnoadditionalcolorsortingesinit.
Sabrina Veckenstedt Thursday, April 22, 2010 12:00:32 PM MT
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About
Incandescentlight
TherearedifferentkindsofIncandescentwhichinclude:
-Mazda:Screwinlightbulb
-Neodymium:Fullspectrumbulbs
-QuartzHalogenSystems
-HeatLampSystems
Allmayveryinlumenintensities
Alloftheseformsofincandescentlightingfallundertheinferredsectionofthespectrum.
Sabrina Veckenstedt Thursday, April 22, 2010 12:00:32 PM MT
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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.
Sabrina Veckenstedt Thursday, April 22, 2010 12:00:32 PM MT
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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.
Sabrina Veckenstedt Thursday, April 22, 2010 12:00:32 PM MT
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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
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