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31 déc. 1932 - Chadwick

Description:

The nucleus of an atom contains neutrons, electrically neutral particles with a mass similar to that of a proton

Ajouté au bande de temps:

History of the Atom

ByMonica Orlandi

25 nov. 2017

0

0

523

Date:

31 déc. 1932

Maintenaint

~ Il y a 92 ans

Les images:

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