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14 ene 1932 año - James Chadwick discovers the Neutron

Descripción:

A neutron is a positively charged electron.

Añadido al timeline:

Atomic timeline - Noah Turnquist and Trent Oberreit

ByNoah Turnquist

7 nov 2017

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fecha:

14 ene 1932 año

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~ 93 years ago

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