狭义相对论中与实际观测有关的两个问题

Two Questions Relating to Observation in Special Relativity

详细讨论了狭义相对论里面两个极具启发性的问题,即观看运动的时钟和从小角度观看高速运动物体.说明了前者与狭义相对论中通常所说的“时间膨胀”之间的区别与联系,给出了运动时钟和静止时钟的时间间隔之间的关系.对后者,修正了前人讨论中的一处疏漏,从而说明在狭义相对论中涉及观看某现象时如何考虑光信号的传输限制.

Two enlightening questions in special relativity are discussed, namely, to look moving clocks and fast-moving objects from a small angle. The difference and relation between the former and 'time inflation' (a conclusion generally mentioned in special relativity) is made clear, the formula about two time intervals measured by a moving clock and a stationary clock is presented. To the latter, a careless mistake appeared in the book edited by Weisskopf is amended, use these discusses we emphasize how to consider the transmission of light signal when we look an phenomena in special relativity.