24 июл 1932 г. - James Chadwick
Описание:
The atom was believed to be composed of a positively charged nucleus surrounded by negatively charged electrons. James Chadwick bombarded beryllium atoms with alpha particle and then an unknown radiation was produced.Добавлено на ленту времени:
Дата:
24 июл 1932 г.
Сейчас
~ 93 г назад