1 янв 1898 г. - Marie Curie's discovery of Radium
Описание:
She discovered that the element radium gave off rays of radiation that apparently came from within the atom itself. Atoms contained subatomic particles as electrons and protons.Добавлено на ленту времени:
Дата:
1 янв 1898 г.
Сейчас
~ 127 г назад