那时因为光是以一种电磁辐射的形式存在的——换句话说，光就是一种波，在这种波里，电场与磁场不断地相互进行着交替作用。
That is because light is a form of electromagnetic radiation—in other words, a wave in which electric and magnetic fields continuously leapfrog each other.
我们所涉及的根植(接地)，是新磁场的变迁形式。
This grounding we speak of above is a transitional form of new magnetism.
本文运用叠加原理，从麦克斯韦方程的积分形式出发推导出在交变电磁场中储藏在电容器中的电场能量，并且指出了决定电容器电容数值的因素。
The energy of electric field stored in the capacitor placed in an alternating electromagnatic field is concluded by using the principle of superposition and by starting with Maxwell equations.
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