http://www.ecocoma.com en-us A light-emitting diode (LED) is a semiconductor device that emits incoherent narrow-spectrum light when electrically biased in the forward direction of the p-n junction. This effect is a form of electroluminescence. An LED is a small area source with extra optics added to the chip that makes it emit a certain radiation pattern. The color of the emitted light depends on the composition and condition of the semiconducting material used, and can be infrared, visible, or near-ultraviolet. webmaster@ecocoma.com (Glendale) Sat, 4 Feb 2012 21:24:20 -0800 Sat, 4 Feb 2012 21:24:20 -0800 20 http://www.ecocoma.com/images/ecocoma-logo.gif http://www.ecocoma.com