相对论中的一个矛盾问题及分析

A contradiction and analysis in theory of relativity

在由洛仑兹变换推证动量守恒定律在不同惯性系中具有相同的数学形式过程中,提出了一个推导中的矛盾,通过对这一矛盾的分析,说明同一物体不仅运动时的质量与静止时的质量不同,而且不同情况下的静止质量也是不同的。进而对几种情况下物体的静止质量做了说明,强调在相对论中,对静质量的处理,不能一概而论,必须具体问题具体分析。

A contradiction is raised in the process of deducing, based on Lorentz transformation, that the law of conservation of momentum has identical mathematical forms in different inertial reference frames .Through the analysis of the contradiction, it is illustrated that the same object in motion doesn抰 have the same mass with its mass while resting and that it抯 rest mass differs under various situations . Explanation is given to an object抯 rest mass in different cases . It抯 stressed that in the theory of relativity, an attitude of dealing with concrete problems in corresponding approaches instead of generalization should be taken in view of rest mass.