摘要
在相对论情况下,为了利用质点系的静质量中心描写质点系的整体运动,需要引入一个反映质点系内部质点运动激烈程度的量纲为一的参数α.由此推导出含参数α的相对论的质心运动定理.研究表明,核反应的质量亏损是复合粒子内部能量变化的结果;核反应释放的能量来自复合粒子的内部能量,质量亏损可以用质点系参数α变化来进行解释.
On the condition of relativity, for using the center of rest mass of compound particle to represent its motion,it is necessary to introduce a dimensionless parameter α that describes the activity of internal particles in a compound particle. Thus, the law of relativistic motion of the center of mass of a particle system is derived with the parameter α. It is found that the change in internal energies of compound particles leads to the mass defect in nuclear reaction;the charged energy comes from the internal energies, the mass defect can be explained in terms of the parameter α.
出处
《大学物理》
北大核心
2004年第11期17-18,65,共3页
College Physics
关键词
质心
相对论质量
质量亏损
center of mass
relativistic mass
mass defect
