1 feb 1859 anni - 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.
Aggiunto al nastro di tempo:
Data:
1 feb 1859 anni
Adesso
~ 165 years ago
