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18 апр 1897 г. - Discovery
Описание:
By using cathode ray tubes, J.J. Thompson identifies the electron and determines the ratio of mass of an electron to its electronic charge
Добавлено на ленту времени:
4 окт 2017
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Chem
Дата:
18 апр 1897 г.
Сейчас
~ 127 г назад