电荷守恒和电流守恒  

Conservation of Charge and Conservation of Current

作　　者：梁昌洪[1] 陈曦[1] 

机构地区：[1]西安电子科技大学天线与微波技术国防重点实验室,陕西西安710071

出　　处：《电气电子教学学报》2009年第3期1-3,16,共4页Journal of Electrical and Electronic Education

基　　金：教育部"创新教学团队"资助

摘　　要：守恒定律是构成电磁理论大厦的重要支柱之一。在文中引入了扩展全空间概念,由此得到电荷守恒和电流守恒的一般形式。电荷守恒对应于时间对称性,而电流守恒则对应于空间的对称性。在不同的惯性系中,电流和电荷联合起来,构成四维矢量,它们具有Lorentz时间-空间对称性。文中最后还给出了应用实例。As the third reading notes about instructional electromagnetic theory, conservation law is the one of important mainstay in electromagnetic theory. This paper introduces the concept of extended total space, and then we extend conservation of charge and conservation of current to general case. The conservation of charge corresponds to time symmetry, while conservation of current corresponds to space symmetry. Under different inertial frames, charge and current which have the property of Lorentz time-space symmetry composes four-dimensional vector. Some examples are shown at last.

关 键 词：电荷守恒 时间对称性 电流守恒 空间对称性 

分 类 号：TM15[电气工程—电工理论与新技术]