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7 h 25 m, 2 ene 1919 año - Francis Aston pioneers the mass spectrometer and uses it to discover many isotopes
Añadido al timeline:
20th Century
By
Rafelle Marie Timog Allego
10 feb 2018
0
0
654
fecha:
7 h 25 m, 2 ene 1919 año
Ahora mismo
~ 105 years ago
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