jun 3, 1913 - Niels Bohr (1913 AD)
Description:
Niels Henrik David Bohr (AD 1885-1962) was a Danish Physicist. He worked with Ernest Rutherford at the University of Manchester. Rutherford's theory of a small, dense proton nucleus with several light electron orbits would have been unstable, according to classical physics. Bohr felt the need to investigate this, and in 1913, he published an article trilogy in "The Philosophical Magazine" that stated that there were specific orbits that electrons could have around an atom, which were determined by the quantum of action. The article also stated that electromagnetic radiation could only occur when an electron went into a low-energy orbit. The orbits in the Bohr model are known as electron shells. Many physicists of the day saw Bohr as somewhat of a Maverick, they would not accept his theory. However, Bohr's model accounted for a lot of experimental data, more of which was always being collected at the time. He was awarded the Nobel Prize in 1922.
Throughout his career, Bohr's handwritting was attrocious, and he even had to have his mother write up his reports!
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History of atomic theory
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