反映哈密顿量的动力对称性的李代数和李群
回答: 电磁场什么都不是,它的全部意义就是去改变测试电荷运动方式,观察到这种改变,就是观察到电磁场。好了什么叫做电磁场是U(1)的
由 marketreflections
于 2011-04-15 16:45:33
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