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The Ongoing Revolution in LED Lighting

by LiveModern Webmaster last modified Jul 20, 2012 01:01 AM
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by Alex Wilson last modified Jul 19, 2012

Author name:  Alex Wilson Blog Category:  Energy Solutions GreenSpec Insights LED lighting keeps on improving as yet another record efficacy is announced. Cree's new XLamp XP-G2 LED chip delivers up to 165 lumens per watt. Click on image to enlarge. Photo Credit: Cree A few days ago I got yet another press release about a new efficiency record with LED lighting. These are almost commonplace as we ride the revolution that is redefining electric lighting. To back up, let me provide a short synopsis of lighting technologies and history. Incandescent lamps provided the first electric lighting, with Thomas Edison inventing the first commercially viable light bulb around 1880 (building on the inventions of many others), and the technology has changed relatively little since General Electric introduced tungsten-filament light bulbs in 1911. Electric current flows through a very thin, coiled filament made of tungsten wire and glows white-hot, producing light. With incandescent lighting, roughly 90% of the electricity is converted into heat, only 10% into light. read more






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