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Bohr Model
Bohr's model of the atom presented the idea of layers that an electron is maintained in for different elements, this is also known as an atomic shell. While later proposals refined this idea, the main idea still stands, and is often how early students of Chemistry are taught how electrons behave and how elements interact with one another. https://www.youtube.com/watch?v=GhAn8xZQ-d8 -
Nobel Prize
Niels Bohr received the Nobel prize in Physics in 1922 for his work on the structure of the atom. This was notable due to the committee's previous lack of priority on quantum physics. -
Complementarity
Niels Bohr was key in the concept of complementarity, which relates to quantum mechanics in that objects have complementary properties that can only be viewed separately, such as an electron's position and it's speed. However, both are necessary for full understanding of the phenomena. This idea was a large philosophical leap that also related to Heisenberg's Uncertainty Principle. -
Sweden Offers Asylum
During World War II Niels Bohr, after suspicion that we would be arrested by members of the Nazi Party, fled to Sweden. After his arrival he made an appeal to the Swedish King to offer asylum to Danish Jews fleeing the country. In October 1943 Sweden opened its borders to these refugees.