4 апр 1897 г. - Discovery of the Electron
Описание:
Experimenting with cathode ray tubes, J. J. Thomson identifies that electonrs make up cathoder rays. He also calculated the mass of the electons and developed the plum pudding model.Добавлено на ленту времени:
Дата:
4 апр 1897 г.
Сейчас
~ 128 г назад