20 март 1897 г. - J.J. Thomson discovered the electron and created the plum pudding model.
Описание:
Thomson discovered the electron by experimenting with a Crooks. The plum pudding had first shown that atoms had a positive and negative charge. These were named 'Proton and Electron.'Добавлено на ленту времени:
Дата:
20 март 1897 г.
Сейчас
~ 128 г назад