Original: Niels Henrik David Bohr (; 7 October 1885 â "18 November 1962) was a Danish physicist who made fundamental contributions to understanding atomic structure and quantum mechanics, for which he received the Nobel Prize in Physics in 1922.
Simplified: Niels Bohr (October 7, 1885 - November 18, 1962) was a famous Danish physicist who helped discover quantum physics, the structure of the atom, and the atomic bomb. Bohr was awarded the Nobel Prize in 1922 for, in short, discovering the quantization of atomic energy levels.