1 янв 1897 г. - J.J. Thomson
Описание:
J.J. Thomson discovered the electron. He did this by using a negatively-charged cathode-ray tube. He concluded from the experiment that there was a particle smaller than the atom that had a negative charge.Добавлено на ленту времени:
Дата:
1 янв 1897 г.
Сейчас
~ 128 г назад