White leds promise green illumination domination

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Incandescent and halogen lamps naturally have a power factor of 1, but Compact fluorescent and LED lamps use input rectifiers and this causes lower power factors. William Dinkel, an avid blogger on green technologies and energy efficient solutions, contributed to the reporting and research for this article. The Illuminating Engineering Society of North America IESNA in published a documentary standard LMwhich describes the methods for testing solid-state lighting products for their light output lumensefficacy lumens per watt and chromaticity. Early LED lamps varied greatly in chromaticity from the incandescent lamps they were replacing. Keys to Better Lighting Upgrades. Similar to incandescent lamps and unlike most fluorescent lamps e. An incandescent light bulb uses a paltry 10 percent of its energy to create light.

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