Light Emitting Diode (LED)
From energypedia
Revision as of 11:47, 4 April 2011 by ***** (***** | *****)
"A light-emitting diode (LED) is a semiconductor light source. LEDs are used as indicator lamps in many devices and are increasingly used for other lighting. Introduced as a practical electronic component in 1962, early LEDs emitted low-intensity red light, but modern versions are available across the visible, ultraviolet and infrared wavelengths, with very high brightness."
Source and more info: http://en.wikipedia.org/wiki/Light-emitting_diode
