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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.

Añadido al timeline:

Atomic Theory Timeline

ByRachel
11 oct 2017

fecha:

21 mayo 1897 año
Ahora mismo
~ 127 years ago
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