RE: FREE ENERGY COOKING: I GOT A FRESNEL LENS!!

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FREE ENERGY COOKING: I GOT A FRESNEL LENS!!

in permaculture •  6 years ago 

Is this the same of a solar kitchen? I've heard a lot about them, but I've never seen one of them operational.
Anyway this was very interesting, thank you for sharing :)

permaculture
6 years ago by

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