1 янв 1896 г. - Henri Becquerel
Описание:
He discovered that uranium salts spontaneously emit a penetrating radiation. Further studies made it clear that this radiation was not X-ray radiation and that he had discovered radioactivity.Добавлено на ленту времени:
Дата:
1 янв 1896 г.
Сейчас
~ 129 г назад