efficient illumination – The InfoGreenGlobal https://infogreenglobal.com The InfoGreenGlobal Sun, 17 Mar 2024 09:36:05 +0000 en-US hourly 1 Bright and Efficient Illumination https://infogreenglobal.com/bright-and-efficient-illumination/ https://infogreenglobal.com/bright-and-efficient-illumination/#respond Sun, 27 Jun 2010 17:50:40 +0000 http://infogreenglobal.com/?p=290 Thomas Alva Edison invented the long-lasting light bulb more than a hundred years ago. The principle of the filament has remained the same to this day – as has its poor yield: The bulb converts only 5 to 10 percent of the invested energy into light, while most of it becomes heat. Fluorescent tubes and […]

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