Sunday, July 19, 2020

Giant glass diffusion pump and cathode ray tube demo





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! https://www.amazon.com/Vacuum-Diffusion-L-2210-Three-stage-Four-stage/dp/B07MJ2RQ44/ Diffusion pump instructions translation: https://twitter.com/BenKrasnow/status/1170188966642896896 I used DC-704 silicone diffusion pump oil: https://www.duniway.com/catalog/diffusion-pumps/diffusion-pump-oil The tabletop burner and fuel are commonly found at Asian supermarkets. Phosphor paint: https://www.coastairbrush.com/products.asp?cat=386 Water chiller: https://www.ebay.com/itm/S-A-CW-5200-Industry-Water-Chiller-110V-60Hz-for-Laser-Cutting-2-Years-Warranty/122389384736 Support Applied Science on Patreon: https://www.patreon.com/AppliedScience

2 comments:

  1. Barium Tungsten alloy.
    https://www.americanelements.com/barium-tungsten-alloy
    Barium for electron emission and Tungsten for filament longevity.

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  2. Dear Ben, I really enjoy your videos on Youtube. I just now watched the ammonia purification video. I felt compelled to comment. My first ever comment. I hope this message finds you well. The storage container you chose is most likely furnace brazed. I have opened these vessels. When I heard your instruction of no copper or brass, I was immediately concerned with your choice of storage. I hope all is well. PLEASE REVISIT YOUR AMMONIA if you have not already. Keep up the good, and AMAZING work.

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