Danish physicist who studied atomic structure and radiations; the Bohr theory of the atom accounted for the spectrum of hydrogen (1885-1962)

One atomic unit of distance, equal to 0.5292 Å.

Bohr is a lunar crater that is located near the western lunar limb, in the area that is affected by librations. It is attached to the southwestern rim of the larger Vasco da Gama crater formation, and to the southeast of Einstein crater, the latter being named after a fellow physicist.