“spin”的概念、定义、习题解题方法及翻译-物理辞典

单词	spin
释义	spin(intrinsic angular momentum) Symbol s. The part of the total angular momentum of a particle, atom, nucleus, etc., that is distinct from its orbital angular momentum. A molecule, atom, or nucleus in a specified energy level, or a particular elementary particle, has a particular spin, just as it has a particular charge or mass. According to quantum theory, this is quantized and is restricted to multiples of h/2π, where h is the Planck constant. Spin is characterized by a quantum number s. For example, for an electron s = ±½ , implying a spin of + h/4π when it is spinning in one direction and -h/4π when it is spinning in the other. Because of their spin, particles also have their own intrinsic magnetic moments and in a magnetic field the spin of the particles lines up at an angle to the direction of the field, processing around this direction. See nuclear magnetic resonance
随便看	GUT GWS model gyrocompass gyromagnetic ratio gyroscope habit hadron Hahn, Otto half cell half-life half-thickness half-wave plate half-wave rectifier half-width Hall effect Halley's comet Halley, Edmund halo Hamiltonian hard ferromagnetic materials hard radiation hardware harmonic harmonic motion harmonic oscillator

物理辞典收录了3346条物理词条，基本涵盖了常用物理知识及物理英语单词词组的翻译及用法，是物理学习的有利工具。