1 févr. 1859 - 1897 AD: In 1897, J.J Thompson demonstrated that atoms were made up of even smaller particles called electrons, which gave the atom a (-) charge through electric field experiments. His model of an atom was known as a raisin bun model and was an improvement of Dalton’s model, with added electrons.
Ajouté au bande de temps:
Date:
1 févr. 1859
Maintenaint
~ Il y a 165 ans
