| 单词 | bohr theory |
| 释义 | > as lemmasBohr('s) theory Used to designate certain theories, measurements, etc., formulated by Bohr; as Bohr atom: the atom as described by the Bohr theory; Bohr('s) magneton: a unit arising from Bohr's theory of the atom, equal to eh/4πm (where e and m are the charge and mass of the electron, and h is Planck's constant, in S.I. units), i.e. about 9·27 × 10−24 joule per tesla; 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). ΘΚΠ the world > matter > chemistry > chemistry as a science > chemical theories > [noun] binary theory1863 material theory1863 type-theory1868 Bohr model1923 the world > matter > physics > atomic physics > [noun] > theory or law of anomœomery1678 atomic theory1755 Dulong and Petit's law1863 Rutherford's formula1906 whole number rule1920 Bohr('s) theory1923 string theory1975 superstring theory1975 the world > matter > physics > atomic physics > [noun] > atomic structure > types of Rutherford atom1913 Bohr atom1923 shell structure1955 Rydberg atom1971 the world > matter > physics > quantum theory > quantum mechanics > quantum electrodynamics > [noun] > multipole moment > unit of measurement of magneton1911 Bohr('s) magneton1923 the world > matter > physics > quantum theory > [noun] > radius of smallest orbit Bohr radius1956 1923 Kramers & Holst Atom & Bohr Theory of its Structure v. 119 The Bohr model of the hydrogen atom in the simplified form. 1923 Kramers & Holst Atom & Bohr Theory of its Structure v. 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. 1923 H. L. Brose tr. A. J. W. Sommerfeld Atomic Struct. & Spectral Lines iv. 212 The times of revolution in the Bohr circles are proportional to the cubes of the quantum numbers. 1923 H. L. Brose tr. A. J. W. Sommerfeld Atomic Struct. & Spectral Lines iv. 249 We shall call the value (15) the Bohr magneton. 1927 N. V. Sidgwick Electronic Theory of Valency 208 The Bohr magneton..is almost exactly five (4·96) times the Weiss magneton. 1936 Nature 1 Feb. 187/2 The Bohr formula for the Rydberg constant is not correct. 1938 R. 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. 1956 Nature 4 Feb. 241/2 R is the Bohr radius, 0·529 A. 1958 Chambers'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. 1968 J. J. C. Smart Between 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. < as lemmas |
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