HEADLAMPS

What are Headlamps?
Oneofthemostimportantcomponentsofeachandeverycarisitsheadlamp.Ithelpsthe
drivertodrivethecardayandnight.Headlampsarethelight-emittingdevicesthatareinstalled
inthefrontofcars.Commonlytheyarealsoreferredtoasheadlights.Overtheyearsthequality
andtheperformanceoftheheadlampshaveincreased.Nowadaystheyareavailableindifferent
colours and different car companies design their headlamps on their own such that it
complementstheoveralllookofthecar.Otherthancarsheadlampsalsoplayanimportantrole
inautomobilesliketrains,aeroplanes.Nowadayslightsarealsoinstalledonthebicyclesmaking
iteasyfortheridertorideitinthedark.Theseheadlampsorlightsworkonbatteriesorsmall
generators like that in the bicycle that convertsthe mechanical energy into electrical energy.

History,
Theheadlampswereinventednearlyatthetimewhencarswereinvented.Beforethatcarriages
usedlampshavingcandles.Theywerenotofmuchuseasathighspeeds.Earlylampsused
fuels. Which also were of notmuch use duringlong journeys.It was in 1908 whenthe
headlampsworkingonelectricitycameintothepicture.Cadillacwasthefirstcarcompanythat
installedsuchheadlampsintheircars.Laterin1915,acarcompanyfoundthefirstlowbeam
headlampsthatemitted lesslightascompared tonormalheadlamps. 2 yearslaterCadillac
introducedacarthathadboththelowbeamandhighbeamalltogetherinonethatcouldbe
changedbytheleverthatwasonthesideofthesteeringwheelhencepreventingthedriverto
moveoutofthecartodothesame.Thissystemwaswidelyfollowedbythecarmanufacturing
companiesallovertheworlduntilacarcompanyintroducedacarthathadheadlampshaving
three different filamentsthus can emit three different intensitiesoflight. Meanwhile,the
directional lighting was also introduced in the market in noless than a year. When the
developmentinthetechnologiesoftheheadlampwastakingplacearoundtheglobe,USmade