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4 янв 1932 г. - James Chadwick

Описание:

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

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Hailee and Katie hr 3

ByHailee Ketola

26 сен 2017

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4 янв 1932 г.

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~ 93 г назад

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