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单词 Electric Displacement
释义

Electric Displacement

中文百科

电位移 Electric displacement field

(重定向自Electric Displacement)
平行板电容器的两片平板导体分别含有的正负自由电荷,会产生电位移。借着一个扁长方形盒子,可以用高斯定律来解释电位移与自由电荷的关系。
A parallel plate capacitor. Using an imaginary box, it is possible to use Gauss's law to explain the relationship between electric displacement and free charge.

在电磁学里,电位移是出现于马克士威方程组的一种矢量场,可以用来解释电介质内自由电荷所产生的效应。电位移\mathbf{D}以方程序定义为

\mathbf{D}\ \stackrel{\mathrm{def}}{=}\ \epsilon_{0} \mathbf{E} + \mathbf{P}

其中,\epsilon_{0}是电常数,\mathbf{E}是电场,\mathbf{P}是电极化强度。

英语百科

Electric displacement field 电位移

(重定向自Electric Displacement)
A parallel plate capacitor. Using an imaginary box, it is possible to use Gauss's law to explain the relationship between electric displacement and free charge.
平行板电容器的两片平板导体分别含有的正负自由电荷,会产生电位移。借着一个扁长方形盒子,可以用高斯定律来解释电位移与自由电荷的关系。

In physics, the electric displacement field, denoted by D, is a vector field that appears in Maxwell's equations. It accounts for the effects of free and bound charge within materials. "D" stands for "displacement", as in the related concept of displacement current in dielectrics. In free space, the electric displacement field is equivalent to flux density, a concept that lends understanding to Gauss's law. It has the SI units of coulomb per squared metre (C m).

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更新时间:2025/6/22 18:23:17