1 janv. 1932 - James Chadwick's discovery of the neutron [7]
Description:
James Chadwick’s discovered neutrons in an experiment where he put beryllium in a chamber with polonium and when the beryllium was struck with alpha rays, the beryllium emitted neutral waves. Chadwick came to the conclusion that this was a neutron and that they have roughly the same mass as protons. There had been talk and belief about a neutral particle but Chadwick's discovery made it official. This discovery helped the creation of the James Chadwick model which has become one of the main models we use todayAjouté au bande de temps:
Date:
1 janv. 1932
Maintenaint
~ Il y a 93 ans