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This is an llder video using a brown beer bottle as a boiler.
Fresnel Lens 3002ºF DIY Lava Obsidian FARMINGby GREENPOWERSCIENCE
Giant Fresnel Lens Deathray: An Experiment in Opticsby DrSimons
Portable Fresnel Solar Ovenby Renard_Bleu
Projection Fresnel Lens Linear to Spot Conversionby GREENPOWERSCIENCE
Cooking at 350ºF with the sun (Fresnel cooker from scrap)by alphydan
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