20 mar 1897 año - J.J. Thomson discovered the electron and created the plum pudding model.
Descripción:
Thomson discovered the electron by experimenting with a Crooks. The plum pudding had first shown that atoms had a positive and negative charge. These were named 'Proton and Electron.'Añadido al timeline:
fecha:
20 mar 1897 año
Ahora mismo
~ 128 years ago