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Birth
Niels Henrik David Bohr was born in Copenhagen, Denmark, the second of three children. -
The Rutherford-Bohr Model
Niels Bohr published three papers taking Ernest Rutherford's nuclear model and Max Planck's quantum theory to assert the notion that electrons followed a fixed orbit around the nucleus of an atom and, given a change in electromagnetic radiation, those electrons can jump between orbits. [https://youtu.be/fm2C0ovz-3M] -
Nobel Prize in Physics
In 1922, he was awarded the ‘Noble Prize in Physics’ in recognition “for his services in the investigation of the structure of atoms and of the radiation emanating from them”. -
Correspondence Principle
As part of his Nobel lecture, Bohr explained his correspondence principle. The principle states that when you are looking at the rotation frequency and radiation frequency of electrons that would normally be separated, when given cases where atoms were stretched in size to extremes, the frequencies merged and that atoms acted like they would under classical laws of physics. (Cropper, 247) -
Nuclear Cooperation
Bohr spent a lot of time traveling back and forth to Los Alamos, but rather than working on the atomic bomb, he had more political motivations. His belief was that the way to avoid a deadly nuclear arms race was to share the information that an atomic bomb was imminent with the Soviet Union and give Stalin a share in its control. His views were not popular with either President Roosevelt or Winston Churchill (Cropper, 254) -
Open Letter to the UN
In June of 1950, Bohr addressed an 'Open Letter' to the United Nations calling for international cooperation on nuclear energy. The International Atomic Energy Agency was created along the lines of Bohr's suggestions.