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Birth
On October 7th, 1885 Niels Bohr is born in Copenhagen. This is the beginning of a long career in the field of physics and science in general. -
Bohr Model
In 1913 Bohr proposed what is now called the Bohr model of an atom, in which electrons orbit the nucleus of an atom. Despite some problems with it, the Bohr model is still used today. -
Institute of Theoretical Physics
In 1921, Bohr founded the Institute of Theoretical Physics. It is here that he develops the principle of complementarity. This principle states that particles can have properties that are contradictory to each other, such as light where it can behave either as a particle or a wave. -
Death
Niels Bohr dies at the age of 77, bringing an end to a lifetime of scientific achievement.