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jan 1, 1932 - James Chadwick

Description:

James Chadwick assaulted beryllium atoms with alpha particles. An unknown radiation was produced. Chadwick interpreted this radiation as being composed of particles with a neutral electrical charge and the approximate mass of a proton. This particle became known as the neutron.

Added to timeline:

Atomic history

ByKaden Anderson (student)
28 Sep 2018
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0
872

Date:

jan 1, 1932
Now
~ 94 years ago

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