Electric flux density and magnetic field intensity are defined in term s of two thought experiments . Physical meanings of the two vectors can be realized .The relationships between electric flux density and electric field intensity , magnetic field intensity and magnetic induction intensity can be found from Gauss 's law and Am père law in virtue of Coulomb's law and Biot - Savart law on experimentation .%通过思想实验定义电通量密度和磁场强度两个电磁场矢量，认识其物理意义。由高斯定律和安培定律并借助实验上的库仑定律和毕奥萨伐尔定律，找出电通量密度与电场强度以及磁场强度与磁感应强度之间所必须满足的关系。
展开▼
