White leds promise green illumination domination
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Dec 30, By the noughties, tiny light-emitting diodes were also illuminating the They now have everything they need to dominate lighting, except for a White LEDs now illuminate parking lots, streets, and civic buildings. Aerospace · At Work · Biomedical · Computing · Energy · Gadgets · Geek Life · Green Tech.
Spotlighting the Green Benefits of LEDs
The LEDs on two boards are of different light wavelength, which makes full use of the spectrum White LEDs promise green illumination domination.
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Description:History[ edit ] Before the introduction of LED lamps, three types of lamps were used for the bulk of general white lighting: Incandescent lights , which produce light with a glowing filament heated by electric current. They are being phased out of general lighting applications. Incandescent lamps produce a continuous black body spectrum of light similar to sunlight, and so produce high Color rendering index CRI. Fluorescent lamps , which produce ultraviolet light by a glow discharge between two electrodes in a low pressure tube of mercury vapor, which is converted to visible light by a fluorescent coating on the inside of the tube.