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24 jul 1932 año - James Chadwick

Descripción:

The atom was believed to be composed of a positively charged nucleus surrounded by negatively charged electrons. James Chadwick bombarded beryllium atoms with alpha particle and then an unknown radiation was produced.

Añadido al timeline:

Atomic Timeline

ByTrinity Johnson
27 sep 2018

fecha:

24 jul 1932 año
Ahora mismo
~ 91 years ago
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