15 juill. 1897 - Cathode Ray Tube
Description:
J.J. Thompson discovered the electron, the first of the subatomic particles, using the cathode ray tube experiment. He found that many different metals release cathode rays, and that cathode rays were made of electrons, very small negatively charged particles.Ajouté au bande de temps:
Date:
15 juill. 1897
Maintenaint
~ Il y a 128 ans