3 giug 1909 anni - 1909 - Ernest Rutherford Discovered, through testing with alpha particles through thin gold foil, that most of the matter in a atom is in the middle and that matter has a positive charge. In 1913, his theory was modified to include eletron shells (Niels Bohr)
Aggiunto al nastro di tempo:
Data:
3 giug 1909 anni
Adesso
~ 115 years ago
