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Thread: Parabolic solar cooker - GIF

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  1. Sep 16, 2022, 09:20 PM #3
    nova_robotics
    nova_robotics is offline
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    A few years ago I welded up a frame and put a Fresnel lens in it. I bought that lens online, but you can get them for cheap/free out of old projection TVs which everyone seems to be throwing out these days. This picture is my girlfriend using the Fresnel lens to melt sand into glass. It would melt the sand pretty quick. Very impressive stuff.

    Click image for larger version.  Name: fresnel.jpg  Views: 229  Size: 177.4 KB  ID: 43741
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  2. The Following 4 Users Say Thank You to nova_robotics For This Useful Post:

    Altair (Sep 17, 2022), mwmkravchenko (Sep 17, 2022), rdarrylb (Sep 17, 2022), Scotsman Hosie (Oct 1, 2022)
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