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Birth
Niels Bohr, a Danish physicist, is born in Copenhagen, Denmark. The son of Christian Bohr, Professor of Physiology at Copenhagen University, and his wife Ellen, née Adler. Niels, together with his younger brother Harald a mathematician. His environment and family were favorable for his growth of knowledge. -
Bohr's atomic model
Bohr's atomic model is Niels Bohr's first significant contribution to the emerging science of quantum physics. That the electron would move orbits as it would have more energy. It was radical and unacceptable to most physicists then, but the Bohr atomic model could account for an ever-increasing number of experimental data.
"I. On the Constitution of Atoms and Molecules." Taylor & Francis, https://www.tandfonline.com/doi/abs/10.1080/14786441308634955.
https://www.youtube.com/watch?v=1b9UKTbjj7I -
Correspondence Principle
Bohr's correspondence principle is a guideline for the selection of new theories in science, requiring that to explain all the situations for which a preceding theory was verified.
Bokulich, Alisa, and Peter Bokulich. “Bohr's Correspondence Principle.” Stanford Encyclopedia of Philosophy, Stanford University, 13 Aug. 2020, https://plato.stanford.edu/entries/bohr-correspondence/.
https://www.youtube.com/watch?v=5NPEm0nabRY -
Complementarity Principle
Bohr found that if you were to measure an electron with one apparatus, it would predictably behave like a particle. However, it made the exact measurement with another device, and it suddenly behaved like a wave. The observer must decide how to observe it and accept that doing so foreclosed the possibility of watching it differently.
“Complementarity Principle.” Encyclopædia Britannica, Encyclopædia Britannica, Inc., https://www.britannica.com/science/complementarity-principle. -
Free Choice
Bohr's "free choice' was a response to Albert Einstein's challenge of completeness. It states that "freedom of choice" of the experimenter includes the freedom of which specific property to measure for. If the position is measured accurately.
Niels Bohr, https://www.informationphilosopher.com/solutions/scientists/bohr/. -
Death
Niels Bohr died in, Carlsberg Byen Ejendomme P/S, Copenhagen, Denmark