Science Focus
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After flying a plane across the United States last summer using nothing but the sun for power, Swiss pilots Andre Borschberg and Bertrand Piccard have their eye on the whole enchilada. On Wednesday, April 9, they unveiled a solar-powered aircraft they believe will help them circumnavigate the globe in 2015.
Solar cells generate electricity by allowing photons — the little particles that make up light — to knock an electron off an atom inside a semiconducting material. Think of the solar cell as a pool table, with the photon as a cue ball and the electrons like the colored pool balls...
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» see original post http://theweek.com/article/index/261820/get-ready-for-the-worlds-first-solar-powered-circumnavigation
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