12 maio 1904 ano - -J.J Thomson was responsible for the discovery of the electron in 1897 using a cathode ray tube, and proposed the ‘Plum Pudding’ atomic model in 1904. The Plum Pudding atomic model consisted of electrons within a positive atom.
Adicionado na linha do tempo:
Data:
12 maio 1904 ano
Agora
~ 120 years ago
