Ben Krasnow
Sunday, July 19, 2020
Holograms on chocolate
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DIY process to copy commercial holograms onto chocolate! Completely edible -- no dyes or inks used. Tech Ingredients' video: htt...
4 comments:
Giant glass diffusion pump and cathode ray tube demo
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This vacuum diffusion pump is made entirely of glass so we can see how it works. I also show a CRT built from a glass lab flask. The ...
3 comments:
Tuesday, April 28, 2020
Hypercentric optics: A camera lens that can see behind objects
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Telecentric and hypercentric optics are very different from our eyes or normal camera lenses. They have "negative" perspectiv...
Sunday, April 5, 2020
Alpha radiation makes sparks, detects smoke, and eliminates static cling
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Interesting applications of a strong polonium-210 alpha radiation source. The half life is only 140 days, so the Staticmaster brushes m...
8 comments:
Tuesday, March 24, 2020
Antique 4x5 camera creates 20 micron photolithography masks
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I use an antique 4x5 view camera to create high resolution photomasks in my home shop. Source of film and developing chemicals: https://...
2 comments:
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