1 янв 1852 г. - Henri Becquerel
Описание:
Becquerel's main contribution to the atomic theory was his discovery of radioactivity. His discovery allowed later scientists to show how the atom wasn't just a solid sphere, which was a big step in the development of the theory and model.Добавлено на ленту времени:
Дата:
1 янв 1852 г.
Сейчас
~ 172 г назад
