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31 Dez 1932 Jahr - Chadwick

Beschreibung:

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

Zugefügt zum Band der Zeit:

History of the Atom

ByMonica Orlandi

25 Nov 2017

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523

Datum:

31 Dez 1932 Jahr

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~ 92 years ago

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