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21 Mai 1897 Jahr - Sir J.J Thomson

Beschreibung:

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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Atomic Theory Timeline

ByRachel
11 Okt 2017
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Datum:

21 Mai 1897 Jahr
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~ 128 years ago
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