12 mai 1904 - -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.
Ajouté au bande de temps:
Date:
12 mai 1904
Maintenaint
~ Il y a 121 ans