15 фев 1897 г. - J. J. Thomson discovers the electron
Описание:
J. J. Tomson is a british scientist. He was born in 1856 and died in 1940. He discovered the electron by the cathode ray experiment. He also proposed the plum pudding atom.Добавлено на ленту времени:
Дата:
15 фев 1897 г.
Сейчас
~ 128 г назад