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9 ene 1997 año - 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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caleb

ByCaleb Luttrell
13 feb 2020
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fecha:

9 ene 1997 año
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~ 28 years ago
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