3 jun 1909 ano - 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)
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Data:
3 jun 1909 ano
Agora
~ 115 years ago
