大学物理 ›› 2005, Vol. 24 ›› Issue (11): 27-27.

• 著者文摘 • 上一篇    下一篇

评“相对论的质心运动定理”

关洪   

  1. 中山大学物理系,广州510275
  • 出版日期:2005-11-25 发布日期:2005-11-20

Comments on "relativistic theorem for the motion of center of mass"

  • Online:2005-11-25 Published:2005-11-20

摘要: 在相对论情况下,质点系统的质心是一个不确定的概念.在相对论力学中,质心系(质量中心参照系)亦被有确切定义的动量中心系(系统总动量为零的参照系)所代替.本文对<相对论的质心运动定理与质量亏损>一文的论证和结果作出了评论.

关键词: 质心, 动量中心参照系, 相对论力学

Abstract: The center of mass is not a certain concept in relativity theory. In relativistic mechanics, center of mass system is replaced by center of momentum system(the reference system in which the total momentum of a physical system equals zero). The arguments and conclusions in the paper“Relativistic theorem for the motion of center of mass and the mass defect”are commented.

Key words: center of mass, center of momentum system, relativistic mechanics

中图分类号: 

  • O412