using a fridge compressor vacuum pump to make a vacuum tube?
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Daniel Kramnik
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Mon Sept 05 2011, 08:34PM
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Registered Member #3885
Joined: Sun May 15 2011, 12:47AM
Location: Newton, Massachusetts, United States
Posts: 94
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You can probably make a small cathode ray tube with the level of vacuum attainable using your refrigeration pump. I made a pretty decent cathode ray tube using a vacuum filtration flask and a two stage pump, but it extinguished as the pressure dropped. Given that your pump will not pull anywhere near my level of vacuum, this shouldn't be a problem for you.

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