4.1.1 The initial work made by Neumann

Referring the related records,Neumann`s creative work may be generally divided into twoparts. First,let us consider two closed current-carrying circles that are at electromagneticreaction on each other. One of them may be called as exciting circle while t ......（本文共 3216 字 , 7 张图）     [阅读本文] >>