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12 February, 19:52

What was J. J Thompson working on when we discovered the electron?

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  1. 12 February, 21:03
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    J. J. Thomson used a cathode ray tube to discover the electron. Cathode ray tubes are vacuum tubes that contain two electrodes - one on each side. One of the electrodes (the cathode) fires electrons at the other (the anode) when voltage is added to the system.
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