Giant glass diffusion pump and cathode ray tube demo @AppliedScience

Uploaded July 2020 | Updated September 2026, 2 weeks ago

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 pump was bought on Amazon! amazon.com/Vacuum-Diffusion-L-2210-Three-stage-Four-stage/dp/B07MJ2RQ44

Diffusion pump instructions translation: twitter.com/BenKrasnow/status/1170188966642896896

I used DC-704 silicone diffusion pump oil: duniway.com/catalog/diffusion-pumps/diffusion-pump-oil

The tabletop burner and fuel are commonly found at Asian supermarkets.

Phosphor paint: coastairbrush.com/products.asp?cat=386

Water chiller: ebay.com/itm/S-A-CW-5200-Industry-Water-Chiller-110V-60Hz-for-Laser-Cutting-2-Years-Warranty/122389384736

Support Applied Science on Patreon: patreon.com/AppliedScience

Giant glass diffusion pump and cathode ray tube demo

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$Holograms on chocolate DIY process to copy commercial holograms onto chocolate! Completely edible no dyes or inks used. Tech Ingredients video: https://www.youtube.com/watch?v=SoTi0tM4yQ8 Samy Kamkars diffractive chocolate: https://twitter.com/samykamkar/status/1259173832620830722 Hologram stickers: https://www.ebay.com/itm/100-Huge-1-9-16-Round-Adhesive-Hologram-Sticker-Labels/331178956157 Silver mirror process: https://sci-hub.tw/https://doi.org/10.1080/00202967.1941.11869396 Add a pinch of sodium lauryl sulfate to the stannous chloride primer solution to help the solution get into contact with the plastic surface. https://www.youtube.com/watch?v=y-4qqcCxD6g Morphotonix: https://www.npr.org/sections/thesalt/2014/06/14/321816570/holographic-chocolates-look-as-beautiful-as-they-taste http://www.morphotonix.com/products/ Caswell nickel electroplating kit: https://www.caswellplating.com/electroplating-anodizing/nickel-plating-kits/nickel-electroplating-kit-1-5-gal.html (Price was already pretty high years ago, and has gone up a lot since; and the kit has fewer components than it used to. But it does work well.) Holography Marketplace book lots of very practical information for making your own holograms, and good source of suppliers (though many are out-of-business now): https://www.amazon.com/Holography-MarketPlace-6th-Franz-Ross/dp/0894960997 Very good source for mold making supplies: https://shop.smooth-on.com/ Countermeasures against hologram copying. Holograms are often used as a security seal, so making copies as shown in the video could be a problem without countermeasures: http://www.nli-ltd.com/publications/countermeasures.php I was planning to talk more about different types of holograms in technical detail, but I think I will save it for a future, dedicated video on making original holograms. https://www.patreon.com/AppliedScience$

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Giant glass diffusion pump and cathode ray tube demo