| 释义 |
Bohr|bɔə(r)|
The name of Niels Henrik David Bohr (1885–1962), Danish physicist, used to designate certain theories, measurements, etc., formulated by him; as Bohr atom: the atom as described by the Bohr theory; Bohr('s) magneton: see magneton; Bohr model: a model of the structure of the hydrogen atom; Bohr radius: the radius of the smallest electron orbit in the Bohr model; Bohr('s) theory: a theory of the structure of the hydrogen atom (and hence of other atoms).
1923Kramers & Holst The Atom & the Bohr Theory of its Structure v. 119 The Bohr model of the hydrogen atom in the simplified form. Ibid. 120 In the Bohr atom, likewise, the frequency of revolution w of the electron in its stationary orbit has no direct connection with the frequency of the radiation emitted when the electron passes from this orbit. 1923H. L. Brose tr. Sommerfeld's Atomic Structure iv. 212 The times of revolution in the Bohr circles are proportional to the cubes of the quantum numbers. Ibid. 249 We shall call the value (15) the Bohr magneton. 1927[see magneton]. 1936Nature 1 Feb. 187/2 The Bohr formula for the Rydberg constant is not correct. 1938R. A. Houstoun Treat. Light (ed. 7) xviii. 335 Bohr's Theory of the Hydrogen Spectrum... Bohr supposed that the electron was circling round the proton, and that the centrifugal force was balanced by the electrostatic attraction. 1956Nature 4 Feb. 241/2 R is the Bohr radius, 0·529 A. 1958Chambers's Techn. Dict. 101/1 Bohr theory, a combination of the Rutherford conception of the atom as a central, positively-charged nucleus surrounded by planetary electrons, with the quantum theory, which restricts the permissible orbits in which the electrons can revolve. 1968J. J. C. Smart Betw. Sci. & Philos. iii. 74 The Bohr theory of the atom may appeal to us because it somehow reduces the behavior of atoms to the more familiar behavior of the solar system. |