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Giant Fresnel Lens Deathray: An Experiment in Opticsby DrSimons
Fresnel Lens pool heating optionby GREENPOWERSCIENCE
Non-PV Solar Powerby bananafred
Solar Death Ray (TV Fresnel Lens)by bennelson
Solar cooking blackened seafood parabolic mirror Fresnel Lensby GREENPOWERSCIENCE
Sun compass Videoby gaiatechnician
Fresnel Lens 3002ºF DIY Lava Obsidian FARMINGby GREENPOWERSCIENCE
The Green Helmet (Solar powered, safety lit, weatherproof bike helmet.) by calebjc
Salvaging the Fresnel Lens from a Rear Projection TVby Tool Using Animal
Multifacet parabolic solar concentratorby jarney1
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