may 1, 1932 - Discovery of the Neutron
Description:
James Chadwick- Manchester England
- University of Manchester
- the core also contained a new uncharged particle, which he called the neutron
- bombarding beryllium with alpha particles from a polonium source and studying the radiation emitted by the beryllium as a result
- became convinced that the radiation ejected by the beryllium was in fact a neutral particle about the mass of a proton
Added to timeline:
Date:
may 1, 1932
Now
~ 93 years ago