1 янв 1932 г. - James Chadwick
Описание:
Discovered the nutron when he attacked beryllium atoms with alpha particles. The result lead Chadwick to beleive the particles had a neutral electrical charge and the approximate mass of a proton.Добавлено на ленту времени:
Дата:
1 янв 1932 г.
Сейчас
~ 92 г назад
