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This solar heat ray can produce temperatures exceeding 1800 F� at 10 feet focal length to 300 F� at 100 feet focal length.
Solar furnace made with crisps bags. Solar cooking.by bubal
DIY Archimedes Death Ray Mirrors from Flat Mirrorsby GREENPOWERSCIENCE
Off the shelf parabolic mirror from a beauty supply cosmetic mirrorby GREENPOWERSCIENCE
DIY PARABOLIC MIRROR from a trash can lid.by GREENPOWERSCIENCE
Parabolic solar ray gun a.k.a solar death rayby kishida
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