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Device Generates Renewable Electricity from Cold Night Sky

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An inexpensive thermoelectric device demonstrated the ability to power an LED at night by harnessing the cold of space to generate electricity. Such a device could be used for power generation in remote locations and to produce renewable electricity at night, when lighting demand is at its peak. Scientists from the University of California, Los Angeles (UCLA) and Stanford University built a thermoelectric generator and coupled the cold side of the module to a sky-facing surface that radiated heat to the cold of space. The warm side of the module was heated by the surrounding air,...Read full article

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