Vaccum physics JJ Thomson's experiment

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Thread starter einstein1921
Start date Dec 30, 2012
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einstein1921

Thread starter
Dec 30, 2012

Why did JJ Thomson need to inprove the vacuum in his cathode ray tube?
how to approximately calculate the pressure if one want to do thomson's electric field deflection experiment?
thank you all!

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Drakkith

Mentor

Dec 30, 2012

I'd guess that the vacuum wasn't good enough and the electrons kept colliding with air molecules.

Vaccum physics JJ Thomson's experiment

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Vaccum physics JJ Thomson's experiment

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