jan 1, 1913 - Niels Bohr
1913 AD
Description:
Niels Bohr worked off of Ernest Rutherford's work to prove that there were electron shells in which the electrons moved on around the nucleus. He also discovered things like when electrons move shells then they either emit energy (going down in shells) or absorb energy (going up in shells).
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The History of the Atom
History of the Atom
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