Bohr theory — n. a theory, proposed by Niels Bohr in 1913, stating that electrons revolve in definite orbits around a nucleus, and that radiation is absorbed or emitted only when an electron is transferred from one orbit to another … English World dictionary
Bohr theory — Bohr′ the ory n. phs a quantum theory in which electrons move around an atomic nucleus in distinct circular orbits corresponding to quantized energy levels • Etymology: 1920–25; after N. Bohr … From formal English to slang
Bohr theory — Physics. a theory of atomic structure in which the hydrogen atom (Bohr atom) is assumed to consist of a proton as nucleus, with a single electron moving in distinct circular orbits around it, each orbit corresponding to a specific quantized… … Universalium
Bohr theory — noun Etymology: Niels Bohr Date: 1923 a theory in early quantum physics: an atom consists of a positively charged nucleus about which revolves one or more electrons of quantized energy … New Collegiate Dictionary
Bohr theory — noun (physics) a theory of atomic structure that combined Rutherford s model with the quantum theory; electrons orbiting a nucleus can only be in certain stationary energy states and light is emitted when electrons jump from one energy state to… … Useful english dictionary
Bohr theory — /ˈbɔ ˌθɪəri/ (say baw .thearree) noun a theory of atomic structure in which the electrons are described as moving in individual orbits about a central nucleus. {See bohrium} …
Bohr, Niels — ▪ Danish physicist Introduction in full Niels Henrik David Bohr born Oct. 7, 1885, Copenhagen, Den. died Nov. 18, 1962, Copenhagen Danish physicist who was the first to apply the quantum theory, which restricts the energy of a system to… … Universalium
Bohr , Niels Hendrik David — (1885–1962) Danish physicist Niels Bohr came from a very distinguished scientific family in Copenhagen, Denmark. His father, Christian, was professor of physiology at Copenhagen and his brother Harald was a mathematician of great distinction.… … Scientists
Bohr — noun Danish physicist who studied atomic structure and radiations; the Bohr theory of the atom accounted for the spectrum of hydrogen (1885 1962) • Syn: ↑Niels Bohr, ↑Niels Henrik David Bohr • Instance Hypernyms: ↑nuclear physicist … Useful english dictionary
bohr radius — noun Usage: usually capitalized B : the radius of the smallest or ground state electron orbit in the hydrogen atom, equal to about 5.29×10 9 centimeter compare bohr theory * * * Physics. (in the Bohr atom) the radius of the electron orbit having… … Useful english dictionary
