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14 feb 1897 año - J.J. Thompson - 1897

Descripción:

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

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The History of the Atom

ByChinmay
10 oct 2017
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14 feb 1897 año
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~ 128 years ago
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