Hopefully most of you know that the electricfield is a vector field that basically tells you what kind of force will be exerted on a charged particle that you put in it.
希望大多数人都知道电场是向量场，电场描述了，对场中的带电小颗粒的力的作用。
2
Maxwell's equations conserve certain properties-the magnetic field intensity, the electric displacement field and the Poynting vector that describes the electric flux of an electromagnetic field.
麦克斯韦方程中有某些特性是恒定不变的——磁场强度、电位移场以及描述电磁场电通量的坡印廷矢量。
3
When the end of the electricfieldvector travels in an ellipse, the light is elliptically polarized.