Nborh+Neils+Bohr

Contributions to Physics and Chemistry

 * The bohr model of the atom, the theory that electrons travel in discrete orbits around the atom's nucleus.
 * The shell model of the atom, where the chemical properties of an element are determined by the electrons in the outermost orbit.
 * The correspondence unit was the basic tool of old quantum theory.
 * The liquid drop model of the atomic nucleus
 * Identified the isotope of uranium that was responsible for slow-neutron fission
 * Much work on the copenhangin operation of quantum mechanics.
 * The principle of complementary that items could be separately analyzed as having several contradictory properties.