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James Chadwick
Sir James Chadwick dies July 24 at the age of 83
James Chadwick was born October 2o
in Cheshire, England.
Found the neutron by shooting alpha particles at beryllium with a peice of parafin behind it. He noticed that protons were knocked off of the parafin on a geiger counter which proves their were other particles in the atoms. Further investigation proves it was a neutral particle.