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单词 bohr theory
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bohr theory

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玻尔理论,玻尔学说

Bohr theory

玻尔理论;玻尔学说;波尔理论
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    Bohr theory 玻尔理论; 波尔理论; 波耳学说;
    Bohr tneory 玻尔理论
    The Bohr Theory 玻尔理论
    Mohr theory of failure 莫尔强度理论
bohr theory 玻尔理论,玻尔学说
英语百科

Bohr model

The Rutherford–Bohr model of the hydrogen atom (Z = 1) or a hydrogen-like ion (Z > 1), where the negatively charged electron confined to an atomic shell encircles a small, positively charged atomic nucleus and where an electron jump between orbits is accompanied by an emitted or absorbed amount of electromagnetic energy (hν).[1]  The orbits in which the electron may travel are shown as grey circles; their radius increases as n2, where n is the principal quantum number.  The 3 → 2 transition depicted here produces the first line of the Balmer series, and for hydrogen (Z = 1) it results in a photon of wavelength 656 nm (red light).
Bohr model showing maximum electrons per shell with shells labeled in X-ray notation
Models depicting electron energy levels in hydrogen, helium, lithium, and neon
Elliptical orbits with the same energy and quantized angular momentum

In atomic physics, the Rutherford–Bohr model or Bohr model, introduced by Niels Bohr in 1913, depicts the atom as a small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleussimilar in structure to the solar system, but with attraction provided by electrostatic forces rather than gravity. After the cubic model (1902), the plum-pudding model (1904), the Saturnian model (1904), and the Rutherford model (1911) came the Rutherford–Bohr model or just Bohr model for short (1913). The improvement to the Rutherford model is mostly a quantum physical interpretation of it. The Bohr model has been superseded, but the quantum theory remains sound.

近义、反义、联想词
近义词
n.
atomic theory

英英词典
bohr theory n.
  1. (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 another
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