Video: Man Builds Working Battery Using Only Natural Materials and Prehistoric Technology

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The original video title says he built a "telegraph" from "Stone Age" materials, but that's overblown. It's a voltaic cell, not a telegraph; and he smelts ores in a campfire, which is metalurgy and not a Stone Age technology.

But hyperbole aside, it's a very cool demo.

Posted via email from Fred's posterous