时间的膨胀光速是由观察者来决定的(不考虑他本人的运动状态),因此,光速不变性的这一规律似乎引起了人们的注意,但并未产生重大的影响。我们不可能从这一事实再进一步获得什么情况。例如:我们可以考虑下述的情况。一艘已经加速到某一最高速度的宇宙飞船已经离开了地球并脱离了地球的重力场,这时,它以脱离地球的速度离开了火箭,漂流在字宙空间。为了争辩起见,我 The speed of light is determined by the observer (irrespective of his own state of motion), so the law of light speed invariance seems to attract the attention of the people but does not have a significant impact. We can not get any further from this fact. For example: We can consider the following situation. A spacecraft that has accelerated to a certain maximum speed has left Earth and escaped Earth's gravitational field, at which point it has left the Rockets at an off-world speed and drifted in the cosmic space. To argue, I