宋代超新星爆发事件与光速不变原理

Supernova explosion at Song Dynasty and the principle of constancy of light velocity

光速不变原理包含两点内容:1)光速与光源运动无关;2)光速不依赖于观察者所在参考系,文中讨论了这两点之间的区别.指出了宋代超新星爆发事件只能为证明“光速与光源运动无关”提供参考,而不能证明整个光速不变原理.澄清了对光速不变原理的一些不清晰的认识.

There are two main points in the principle of constancy of light velocity： （1）velocity of light is independent of movement of light source, （2）velocity of light is independent of which reference frame the observer is in. Difference between these two main points is discussed in this paper. It is indicated that explosion of the supernova at the Song Dynasty can only provide a reference to prove the conclusion that velocity of light is independent of movement of light source but is not able to prove the whole principle of constancy of light velocity. Some dim understanding about the principle of constancy of light velocity is clarified.