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1 янв 1897 г. - Cathode Ray Tube

Описание:

In 1897, 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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13 окт 2017
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1 янв 1897 г.
Сейчас
~ 128 г назад