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21 mayo 1897 año - Sir J.J Thomson

Descripción:

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 oct 2017
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21 mayo 1897 año
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~ 128 years ago
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