查询词典 constant field

E is photonic energy; h is Planck constant, this represents the characteristic of particle;υ is the frequency of photon, this represents the characteristic of wave.

"E"为光能；"h"为普朗克常数，表示光的粒子特征；"υ"为光的频率，表示了光的波的特征。

It can be shown that the wavelength is equal to h/p, where h is Planck's constant and p is the momentum of the eigenstate.

波长可以表示为h/p，这里h 是普朗克常数而p是特征态动量。

There are four basic constants in natural units system: Planck constant , speed of light in the vacuum c, the quality of any particle and electron's electric quantity e. Other units can be educed by the four basic units.

自然单位制有四个基本常数：普朗克常数、真空中的光速c、任意粒子的质量和电子的电量e，其它单位都可以由这四个基本单位导出来。

According to the uncertainty principle, the mathematical product of the combined uncertainties of simultaneous measurements of position and momentum in a given direction cannot be less than Planck's constant h divided by 4π.

根据不确定性原理，同时测量位置和给定方向的动量时，合成不确定度之积，不能小于普朗克常数除以4π。

The time evolution of expectation values of the basic dynamic variables in a quantum system under different effective Planck constant were compared with the exact values of the basic dynamic variables in classical system. It is found, for the regular motion, the difference comes from the quantum effect; for the chaotic motion, it comes from the dynamical effect and the destruction of the dynamical system.

通过引入等效普朗克常数，将量子系统中基本动力学变量的期望值和经典系统中基本动力学变量的精确值的时间演化行为相比较，分析了两者产生差异的因素，规则运动主要是和量子效应有关，而混沌运动则是和动力学效应有关，即与系统的动力学对称性破坏相联系。

Planck constant; light-speed; quantum theory ; relativism ; mass ; speed ; time ; space

普朗克常量；光速；量子论；相对论；质量；速度；时间；空间

Quantum chaos ; quantum classical correspondence ; effective Planck constant ; quantum heterogeneity

量子混沌；量子经典对应；等效普朗克常数；量子相空间不均匀度

Taking advantageof the correspondence between self-adjoint pseudo-differential operator and real-valuedWeyl symbol of its own,we obtain that the critical phase volume charactertistic for thenon-localness of uncertainty principle is the first-order term of h and the higher-orderones of h are all omitted,where h is the Planck constant.

利用拟微分算子和实值的Weyl象征的对应关系，我们得到"测不准"的关键值是h的一阶项，其余项为〓。

The text used a circular motion model with charged particle to explain the photoelectric effect.Keywords: Planck constant, photoelectric effect, point charge, quantum mechanics, charge group

文中还用以电荷群的作用力为向心力做圆周运动的带电粒子模型解释了光电效应。

1 Pan Pearl River Delta Physics Olympiad 2009 2009 年泛珠三角及中华名校物理竞赛 Q2 Spin Torque (16 points)题 2 自旋力矩(16 分) An electron has permanent angular momentum called spin that is fixed in amplitude h / 4π, where h is the Planck Constant, while its direction can be changed by external interactions.

电子具有固有的角动量 S ，叫做自旋，其方向可在与外界的相互作用下改变，其大小为固定的 h / 4π，其中 h 为普朗克常数。一导线载有电流 I，导线的下半部分由磁化了的导体组成，上半部分由非磁性导体组成。

Liapunov—Schmidt method is one of the most important method in the bifurcation theory.

Liapunov—Schmidt方法是分叉理论的最重要方法之一。

Be courteous -- even when people are most discourteous to you .

要有礼貌──即使当別人对你最不礼貌的时候。