31 mars 1911 - Ernest Rutherford
Description:
- Experimented with the Gold-Foil experiment.- Noticed that ‘alpha’ particles were sometime deflected by something in the air
- Concluded that atoms are mostly empty space.
- Proposed a dense positively charged nucleus was in every atom.
- The positively charged particles in the nuelus were called Protons
- Atoms stay together because of the pos. Neg. charge attraction.
- Small positively charged particles in the nucleus called protons
Ajouté au bande de temps:
Date:
31 mars 1911
Maintenaint
~ Il y a 114 ans