摘要
从库仑力和安培力的基本公式出发，引用电应力张量和磁应力张量的概念，导出计算电场力和磁场力的简单数学表示式．
From the basic formula of coulomb force and ampere force,together with the concept of electric stress tensor, the mathematic formula of electric force and magnetic force is deduced in this article.
关键词
电应力张量
磁应力张量
电场力
磁场力
electric stress tensor
magnetic stress tensor
electric field
magnetic field
