Niels Bohr

Niels Bohr was a Danish physicist who fundamentally shaped our understanding of atomic structure and quantum mechanics in the early twentieth century.

His model of the atom—electrons orbiting a nucleus in discrete energy levels—revolutionized physics and earned him the 1922 Nobel Prize.

Bohr later contributed to nuclear fission research and helped scientists flee Nazi-occupied Europe.

His name appears in scientific terminology: the element bohrium, the Bohr model, the Bohr radius.