1 janv. 1897 - J.J. Thomson
Description:
J.J. Thomson discovered the electron. He did this by using a negatively-charged cathode-ray tube. He concluded from the experiment that there was a particle smaller than the atom that had a negative charge.Ajouté au bande de temps:
Date:
1 janv. 1897
Maintenaint
~ Il y a 128 ans