“phase space”的概念、定义、习题解题方法及翻译-物理辞典

单词	phase space
释义	phase space For a system with n degrees of freedom, the 2n-dimensional space with coordinates (q₁, q₂, …, q_n, p₁, p₂, …, p_n), where the qs describe the degrees of freedom of the system and the ps are the corresponding momenta. Each point represents a state of the system. In a gas of N point particles, each particle has three positional coordinates and three corresponding momentum coordinates, so that the phase space has 6N-dimensions. If the particles have internal degrees of freedom, such as the vibrations and rotations of molecules, then these must be included in the phase space, which is consequently of higher dimension than that for point particles. As the system changes with time the representative points trace out a curve in phase space known as a trajectory. See also attractor; configuration space; statistical mechanics
随便看	SI units sideband sidereal day sidereal period siemens sievert sigma particle sign convention signal signal-to-noise ratio significant figures silicon chip simple harmonic motion simulation simultaneity sine wave single-sideband modulation sintering sinusoidal oscillator sinusoidal wave siphon skip distance sky wave slepton slow neutron

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。