Niels Bohr


Niels Henrik David Bohr

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Niels Henrik David Bohr
The Nobel Prize in Physics 1922

Born: 7 October 1885, Copenhagen, Denmark

Died: 18 November 1962, Copenhagen, Denmark

Affiliation at the time of the award: Copenhagen University, Copenhagen, Denmark

Prize motivation: "for his services in the investigation of the structure of atoms and of the radiation emanating from them."

Prize share: 1/1


The discoveries of the electron and radioactivity at the end of the 19th century led to different models for the structure of the atom. In 1913, Niels Bohr proposed a theory for the hydrogen atom based on quantum theory that energy is transferred only in certain well defined quantities. Electrons should move around the nucleus but only in prescribed orbits. When jumping from one orbit to another with lower energy, a light quantum is emitted. Bohr's theory could explain why atoms emitted light in fixed wavelengths.

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