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apr 15, 1932 - James Chadwick - Discovery of Neutron (1932)

Description:

Chadwick found an unknown radiation when experimenting with beryllium atoms and alpha particles which was made up of neutral particles. These particles are called electrons and have approximately the same mass as protons.

Added to timeline:

9 Oct 2018
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60
Atomic Theory Timeline

Date:

apr 15, 1932
Now
~ 87 years ago
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