摘要
由带电体与电磁场相互作用时角动量守恒推导出电磁场角动量及角动量流的具体表达式,讨论了电磁角动量对于深入理解电磁场基本属性的作用以及它在微观物理学研究中的应用.
Expressions of angular momentum and angular momentum flow of electromagnetic field are deduced from the angular momentum conservation of interaction of charged mass and electromagnetic field.The function of electromagnetic angular momentum for deepening one’s comprehension of basic properties of electromagnetic field and for studying microphysics are discussed.
出处
《大学物理》
2000年第1期10-12,18,共4页
College Physics
关键词
电磁场角动量
静场
能流
动量
光子自旋
angular momentum of electromagnetic field
energy flow and momentum of static field
photon spin
