Mobile phones charged by the power of speech

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In the search for alternative energy sources there's one form of energy you don't hear much about, which is ironic because I'm referring to sound energy. Sound energy is the energy produced by sound vibrations as they travel through a specific medium. Speakers use electricity to generate sound waves and now scientists from Korea have used zinc oxide, the main ingredient of calamine lotion, to do the reverse – convert sound waves into electricity. They hope ultimately the technology could be used to convert ambient noise to power a mobile phone or generate energy for the national grid from rush hour traffic. .. Continue Reading Mobile phones charged by the power of speech

Tags: Charging, Electrical, Mobile Phone, Nanowires, Piezoelectric, Technology

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