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14 Feb 1897 Jahr - J.J. Thompson - 1897

Beschreibung:

J.J. Thomson discovered the electron by experimenting with a Crookes, or cathode ray, tube. He demonstrated that cathode rays were negatively charged.

Zugefügt zum Band der Zeit:

10 Okt 2017
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Datum:

14 Feb 1897 Jahr
Jetzt
~ 128 years ago