Portions of this entry contributed by Leonardo Motta

Danish physicist born in Copenhagen on June 19, 1922 as the fourth son of Margarethe and Niels Bohr. He entered the Copenhagen University in 1940, following the steps of his father. By that time, Aage was already assisting his father with mail and writing papers.

During World War II, the Bohr family fled to Sweden to avoid the Nazis. Shortly afterwards, Aage and his father went to England. During this time, Aage was acting as his father's assistant and secretary, sharing his father's research. In August 1945, they both returned to Denmark, and Aage resumed his studies, obtaining a master's degree in the following year with a thesis on some aspects of atomic stopping problems.

In 1948, Aage joined the Institute for Advanced Study at Princeton University, and from there went to Columbia University, where he discussed a newly discovered effect in the hyperfine structure of deuterium with I. I. Rabi. He then returned to Copenhagen as a fellow of Niels Bohr Institute, and became professor of Copenhagen University in 1956. After the death of his father in 1962, Aage followed him as the director of the Institute until 1970.

Working with Mottelson in Copenhagen, Aage Bohr summarized current knowledge of nuclear structure in a monograph, of which the first volume, Single-Particle Motion, appeared in 1969, and the second volume, Nuclear Deformations, in 1975. Their efforts on this project and their collaboration on nuclear theory led them both to receive the 1975 Nobel Prize in Physics, which they shared with Rainwater, for research on the quantum mechanical description of nucleons orbiting inside a wobbly rotating droplet.

Bohr (Harald), Bohr (Niels), Mottelson, Rainwater