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Old 08-11-2008, 02:53 PM   #2 (permalink)
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This is something I have been harboring in the back of my head for years. I mean... we are able to harness power from the Sun, isn't heat just another wavelength?

I forget exactly how it works, but I think that the Voyager probes used heat from small thermonuclear generators to supply electrical power. There should be some sort of way to reclaim some of the exhaust energy.
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