2 янв 1932 г. - Chadwick discovers a neutral atomic particle.

Описание:

James Chadwick was an English physicist who was born in Cheshire, England. He went to school studying physics. Chadwick discovered a neutral atomic particle that was very close to proton. This was then discovered as the neutron. Chadwick played a vital role in discovering the parts of the atom because discovered the neutron.

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