In 1962, Danish physicist Niels Bohr died at the age of 77.
Neils Bohr is best known for his model of the atom. With his model, Bohr explained how electrons could jump from one orbit to another only by emitting or absorbing energy in fixed quanta.
Learn more at http://www.pbs.org/wgbh/aso/databank/entries/bpbohr.html.