mardi 7 octobre 2014

Blue LED Wins 2014 Nobel Physics Prize

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Quote:








This year’s Nobel Laureates are rewarded for having invented a new energy-efficient and environment-friendly light source – the blue light-emitting diode (LED). In the spirit of Alfred Nobel the Prize rewards an invention of greatest benefit to mankind; using blue LEDs, white light can be created in a new way. With the advent of LED lamps we now have more long-lasting and more efficient alternatives to older light sources.



I just wanted to give a nod to professors Isamu Akasaki, Hiroshi Amano and Shuji Nakamura for creating the first blue LED light.



I love blue LEDs, albeit because of the the eye candy impact of a pure blue light. I'm still not enthralled with current LED white lights for general household use, partly because, like CFLs, even the more yellow-tinted ones (“warm” or “soft white") don't compare favorably IMO to incandescent bulbs in color.



OTOH, I've replaced many incandescent bulbs in my house with CFLs and some LEDs over the past few years and have seen a considerable reduction in my electric bill so I guess it comes down to priorities.



For specialty lighting though, you can't beat LEDs. I do up my house and yard for Halloween and pretty much all of the lights are LED. I have solid colors, Uvs and color-changing bulbs inside and out - it's really pretty! I also have some battery string lights with timers and haven't had to put fresh batteries in for the last couple of Halloweens, so about 60 days of constant use so far. They're also great for landscape and path lighting.



I just wish there was a way to incorporate more glowy warmth into LED for household lighting. They kind of suck for reading.





via International Skeptics Forum http://ift.tt/1sbh6v0

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