may 1, 1932 - James Chadwick - October 20, 1891 - July 24, 1974
Description:
James Chadwick was an English physicist who made a fundamental discovery in nuclear science that proved the existence of neutrons. He made the electron cloud and added neutrons to the model of the atom.Added to timeline:
Date:
may 1, 1932
Now
~ 93 years ago