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jan 4, 1932 - James Chadwick

Description:

Discovered neutron
Shot beryllium atoms with alpha particles and discovered a radiation with a neutral charge but mass of proton.

Added to timeline:

Hailee and Katie hr 3

ByHailee Ketola

26 Sep 2017

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Date:

jan 4, 1932

Now

~ 94 years ago

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