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1 janv. 1887 - J.J. Thomson

Description:

In 1897, J.J. Thomson discovered the electron by experimenting with a Crookes, or cathode ray, tube. He demonstrated that cathode rays were negatively charged. In addition, he also studied positively charged particles in neon gas.

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atom timeline

ByShelby Swartzendruber
20 déc. 2019
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Date:

1 janv. 1887
Maintenaint
~ Il y a 138 ans
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