12 ч 16 мин, 25 янв 1932 г. - Chadwick
Описание:
Chadwick discovered the neutron, and how they are located in the center of the atom with the protons. Concluded that neutrons neither have a positive nor negative charge but contribute to the atomic weight with the same effect as the protons.Добавлено на ленту времени:
Дата:
12 ч 16 мин, 25 янв 1932 г.
Сейчас
~ 93 г назад