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Jun Yao at UMass built a device that pulls electricity from air using nanowires and water vapor,called Air-gen,it runs 24/7 with no sun or wind. Published in Nature.This DIY version replicates the concept using graphene and a Helmholtz coil. Look at the voltage.Links in comments.

Bluntly Put Philosopher (BPP)

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教育科学技术

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