不变性光速的定义及其应用

Before to apply the coordinate transformation on four-dimension, should raise a definition of time interval, space interval and light velocity of which possess the invariant scalar character in coordinate transformation. The time interval and space interval should be the basic invariant scalar in physics. The sense of Minkowski's Space and Lorent's Transformation should be understood anew. The direction of light to run accepted by receiver has a relation to the velocity of moving receiver. In current theory of Relativity, the narration of "in moving coordinate transformation, the clocks run on slower state and the rulers are shorted" are only the effect of coordinate transformation inducted by Lorent's Transformation; and they are not those real clocks run slower and those real rulers shorted. Therefore the question of those clocks run on slower state in moving coordinate system is eliminated thoroughly.