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8 дек 1897 г. - J. J. Thomson

Описание:

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

Добавлено на ленту времени:

27 сен 2018
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Дата:

8 дек 1897 г.
Сейчас
~ 128 г назад