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General Science / Re: Is there a "potential energy" radio?
« on: 05/02/2013 04:41:54 »
i realize this post is real dead, but I came across it while researching, and have a relevant link. http://www.indiegogo.com/projects/282006 if you haven't seen this, its a "potential energy" powered light that was crowdfunded recently called the GravityLight