1 gen 1906 anni - 1906 - Discovery of "radioactinium" Hahn discovers "radioactinium", which is now known as actinium-x, an isotope of actinium. This discovery was made while working alongside Ernest Rutherford, the leading chemist at the time.
Aggiunto al nastro di tempo:
Data:
1 gen 1906 anni
Adesso
~ 119 years ago