12 magg 1904 anni - -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.
Aggiunto al nastro di tempo:
Data:
12 magg 1904 anni
Adesso
~ 121 years ago