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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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24 feb 1932 anni - James Chadwick discovered neutrons, particles whose mass was close to that of a proton.
Aggiunto al nastro di tempo:
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By
Tommy Worcester
27 set 2017
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0
737
Data:
24 feb 1932 anni
Adesso
~ 93 years ago
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