对称性与守恒律  

The Symmetry and Law of Conservation

作　　者：颜振珏[1] 

机构地区：[1]黔南民族师范学院物理系,贵州都匀558000

出　　处：《黔南民族师范学院学报》2003年第3期13-16,共4页Journal of Qiannan Normal University for Nationalities

摘　　要：本文从对称性入手 ,阐述了物理操作的对称性的实质即为守恒律 ,并从系统的机械能对坐标的平移、旋转及时间平移的对称性出发 ,推导出动量、角动量及机械能守恒律。同时进一步阐述了“对称性破缺”The paper starts with the analysis of symmetry,setting forth that the essentiality of the physical manipulation in symmetry is just the law of conservation,along with the derivation of momentum,angular momentum and mechanical energy law of conservation,all based on the symmetry in which systematic mechanical energies cause the plane motion and circumrotation of space coordinates,as well as the change of time.Simultaneously,the broking of symmetry is also expounded in the paper.

关 键 词：物理操作 时称性 守恒律 对称性破缺 

分 类 号：O369[理学—流体力学]