30 Dec '11, 6pm

LED Bulbs for Less

LED Bulbs for Less

Photo: Philips Brilliant idea The Philips L Prize–winning LED bulb draws one-sixth the power of an incandescent and lasts at least 25 times as long. The passing of Edison's bulb has already been decreed, and which of the two alternatives will replace it is at last becoming clear. It will be the LED. The success of the light-emitting diode means curtains for the compact fluorescent light (CFL). This clunky, mercury-ridden, hard-to-dim, excessively white device has just two things going for it: It's more efficient than Edison's bulb and, right now, cheaper than the LED-based alternative. But the LED's quality is rising and its price is dropping—fast. Even now you can pick up a 40-watt-equivalent LED bulb with an appealingly warm hue for just US $9.97. By the end of 2012, a 60‑W cousin could be available for about the same price, and within a few years for much less than that...

Full article: http://spectrum.ieee.org/green-tech/conservation/led-bulb...

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