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Niels Bohr (7 October 1885 – 18 November 1962)
Bohr's earliest work began in 1912, where he did his post-doctoral research at a university in England known as the University of Manchester. He conducted his research under a physicist named Ernest Rutherford who had just experimentally established that the atom consisted of a heavier positively charged nucleus and lighter negatively charged electrons around it. Educational Video:
(https://www.youtube.com/watch?v=do3r1dKEogA) -
Niels Bohr (7 October 1885 – 18 November 1962)
In 1913 Bohr published several articles in The Philosophical Magazine that postulated electrons could only occupy particular orbits and that electromagnetic radiation from an atom occurred only when an electron jumped to a lower-energy orbit. This work published by Bohr was mostly rejected at first until it began accounting for more and more experimental data, more famously, hydrogen's spectral lines. -
Niels Bohr (7 October 1885 – 18 November 1962)
Beginning in 1916, Bohr was offered a professorship at the University of Copenhagen. Not long after he proposed the opening of an Institute of Theoretical Physics at the university. By 1921 he was giving his inaugural speech at the Institute where he expressed his desire to inspire the next generation of physicists. Bibliography Bohr, Niels (1922). The Theory of Spectra and Atomic Constitution; three essays. Cambridge: Cambridge University Press. -
Niels Bohr (7 October 1885 – 18 November 1962)
Going back to 1912, Bohr had already done extensive work on the periodic table. But in the early 1920's he expanded on that work. By adding one electron at a time to the atom in order to systematically build a larger periodic table, he earned himself the Nobel Prize in 1922. Shortly after that in 1923, several of his colleagues at his Institute of Theoretical Physics experimentally proved the behavior of atomic element 72, reinforcing his vision for the institute.