31 marzo 1911 anni - Ernest Rutherford

Descrizione:

- 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

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