光速参考系及两种惯性系与两种理论

First of all, let's ask a few practical questions；According to the principle of "invariable speed of light", the observers in each reference frame have different views on the unique event, and the existing theory cannot be judged or inoperable.Then it is clarified that the electromagnetic field reference system is the reference system of the theoretical speed of light c；At the same time, so far, all measured speed of light c have been carried out in the stationary gravitational field of the earth.The gravitational field electromagnetic field reference system is the Space-time reference system.Therefore, the current speed of light c is the speed of light c in the Earth's space-time reference frame.It is recommended to measure the speed of light in the motion reference system such as “the space station”, which may be different.Because objects formed by atomic (molecules) are similar, the speed of light should be basically the same in various independent spacetime composed of ordinary matter. "The speed of light remains unchanged in the Space-time reference system".After confirming that the space-time reference system is the reference frame of the speed of light c, the practical problems can be solved.The "inertial system" should be divided into "space-time inertial system" and "non-space-time inertial system".Only in the same reference frame can it be equal and relativistic.Space-time inertia systems have space-time relativity, corresponding to relative space-time theory, Lorentz transformation and special relativity.The non-time-space inertia system does not have independent space-time and exists in the local space-time; the local space-time is superior in the local area and has the property of local absolute space-time; the absolute space-time theory is the local space-time theory;Therefore, the non-space-time inertial system only has Galileo relativity, corresponding to local space-time theory, Galilean transformation and Newtonian theory.Local space-time theory is the foundation, and special relativity is the development and improvement. The relationship between the two is like national law and international law.