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Sunday, 27 April 2008 |
Do you ever imagine that the light bulbs in your house have a 200 year lifespan and needs no electricity to run? Maybe you will think that it’s impossible, and such a bulb does not exist. But it is real! Student from the Virginia Tech University has made an interesting concept that has already won the Greener Gadget award. It is the LED based lamp that uses the most infinite energy source possible - the Earth gravity!
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Gadgets 