10 years ago
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Breakthrough in LED construction increases efficiency by 57 percent
With LEDs being the preferred long-lasting, low-energy method for replacing less efficient forms of lighting, their uptake has dramatically increased over the past few years. However, despite their luminous outputs having increased steadily over that time, they still fall behind more conventional forms of lighting in terms of brightness.
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http://www.gizmag.com
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Really confusing article, but good news I guess.