New Types of Energy Efficient Lighting
Eco-Office Gals
NOVEMBER 13, 2013
LEDs have been in existence in a practically usable form since 1962, but have only gained general usage in the last decade or so, LEDs work on a simple principle – when a device that employs LEDs is switched on, electrons combine with holes incorporated into the device to produce photons. Light Emitting Diodes. photo by: Phil Roeder.
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