Editing Electric light (section)

=== LED ===
{{Main|LED lamp}}
[[File:Led-lampa.jpg|thumb|[[LED lamp]] with E27 [[Edison screw]] base]]
The solid-state [[light-emitting diode]] (LED) has been popular as an indicator light in [[consumer electronics]] and professional audio gear since the 1970s. In the 2000s, efficacy and output have risen to the point where LEDs are now being used in lighting applications such as car headlights<ref name="auto2">{{Cite web |last=Linkov |first=Jon |title=LED Headlights Can Be Brighter but Often Lack Clear Advantages |url=https://www.consumerreports.org/headlights/led-headlights-can-be-brighter-but-often-lack-clear-advantages/ |access-date=2023-03-06 |website=Consumer Reports |date=6 August 2019 |language=en-US}}</ref> and brake lights,<ref name="auto2"/> in flashlights<ref>{{Cite web |title=How to Choose Flashlights {{!}} REI Co-op |url=https://www.rei.com/learn/expert-advice/flashlight.html |access-date=2023-03-06 |website=REI |language=en}}</ref> and bicycle lights,<ref>{{Cite web |date=2022-07-19 |title=See and Be Seen with The 13 Best Bike Lights for Every Kind of Ride |url=https://www.bicycling.com/bikes-gear/a20023360/8-bike-lights-we-love/ |access-date=2023-03-06 |website=Bicycling |language=en-us}}</ref> as well as in decorative applications, such as holiday lighting.<ref name="auto1">{{Cite web |title=LED Lighting |url=https://www.energy.gov/energysaver/led-lighting |access-date=2023-03-06 |website=Energy.gov |language=en}}</ref> Indicator LEDs are known for their extremely long life, up to 100,000 hours, but lighting LEDs are operated much less conservatively, and consequently have shorter lives. LED technology is useful for [[lighting design]]ers, because of its low power consumption, low heat generation, instantaneous on/off control, and in the case of single color LEDs, continuity of color throughout the life of the diode and relatively low cost of manufacture.<ref name="auto1"/> LED lifetime depends strongly on the temperature of the diode.<ref>{{Cite web |last= |first= |date=2022-05-23 |title=The truth about LED lifespan and the longevity of your display |url=https://insights.samsung.com/2022/05/23/the-truth-about-led-lifespan-and-the-longevity-of-your-display/ |access-date=2023-03-06 |website=Samsung Business Insights |language=en-US}}</ref> Operating an LED lamp in conditions that increase the internal temperature can greatly shorten the lamp's life. Some lasers have been adapted as an alternative to LEDs to provide highly focused illumination.<ref>{{cite web | url=https://www.edn.com/laser-diodes-add-intensity-to-narrow-beam-lighting/ | title=Laser diodes add intensity to narrow-beam lighting | date=13 May 2019 }}</ref><ref>{{cite web | url=https://www.laserfocusworld.com/lasers-sources/article/16548296/laser-lighting-white-light-lasers-challenge-leds-in-directional-lighting-applications | title=Laser Lighting: White-light lasers challenge LEDs in directional lighting applications | date=22 February 2017 }}</ref>