1. Space-Time Concepts and Basic Principles of Relativity
The concept of time and space is the core basic concept of classical physics and relativity, and also the most essential difference between these two theoretical systems.
Classical physic holds that space and time are universally absolute, and that their spatial reference systems are universally absolutely stationary. And relativity says that there is no absolute space-time, there are no absolutely stationary spatial reference frames, and all (inertial) reference frames are relative and equal rights. And, due to the difference in velocity (acceleration) and gravity between inertial reference frames produces a spatio-temporal transformation effect. Such as time timing and space size measurement different and so on, and bring a series of physical law adjustment and new physical interpretation.
According to relativity, space-time is one. Therefore, this paper takes the time transformation effect as the main line, and makes a brief analysis of the basic principle of relativity.
1.1. Basic Principles of the Time Transformation Effect of Special Relativity
The basic principle of the time transformation effect of special relativity can be simply described as: An inertial reference frame that moves uniformly in a straight line than one that is relatively stationary reference frame, the time delay effect will occur, that is, the time measure will slow down. Its basis mathematical expression is:
Where: t0 is the relatively static clock time; t is the clock time of relative motion; v is the relative linear uniform speed of the moving clock relative to the stationary clock; C is the speed of light. There's always dt<dt0, Its time meaning and logical relationship are, If the relative motion clock time is go by one second, the relative stationary clock time will go by more than one second; That is, clock time in relative motion runs slower than clock time at relative rest.
1.2. Basic Principles of the Time Transformation Effect of General Relativity
The basic principle of the time transformation effect of general relativity can be simply described as: Due to the change of static gravity of the reference frame; And according to the equivalence principle of general relativity, the "equivalent gravity" caused by the accelerated motion of the reference frame (hereafter referred to as “equivalent gravity”) will produce a change in the speed of time measurement.
In order to facilitate the analysis, this paper simplifies the time transformation effect problem of general relativity to the clock problem moving around the earth's equator as a specific analysis object. The mathematical theoretical analysis adopts the results of Professor Duan Yishi’s book General Relativity and Gauge Theory of Gravitation [
1]. There are two basic formulas for mathematical:
In the formula, t1 is the time of the ground relatively stationary clock on the equator; t2 is the time of a clock moving in a constant circle around the Earth, high above the equator h; t is the coordinate time difference from the beginning to the end of the event; G is the universal gravitation constant; M is the mass of the Earth; R is the radius of the Earth; g = GM/R2; ω is the angular speed of the earth's rotation; C is the speed of light. v is the speed of the moving clock relative to a reference object on the Earth's surface, moving east takes a positive number and moving west takes a negative number.
Formulas (2) and (3) are understood from basic principles and contain three time transformation relationships.
First is the coordinate time difference t from the beginning to the end of the event, and its time transformation relation is 1.
The second is the time effect produced by the change of static gravity. In Formula (2), the time effect relationship is the term 2GM/C2R in the root sign; In Formula (3), the time effect relationship is GM/C2R + gh/C2 in the root sign.
The third is the time effect caused by the equivalent gravity caused by centripetal acceleration when doing uniform circular motion. In Formula (2), the time effect relationship is the R2 − ω2/C2 term in the root sign; In Formula (3), the time effect relationship is R2ω2/2C2 − R2ω2h/C2R + v(v + 2(R+h)ω)/2C2 in the square root.
1.3. Differences in Basic Principles between the Time Transformation Effects of Special Relativity and General Relativity
The first is that the clock movement mode that produces the time transformation is different; The condition for special relativity is that clocks move uniformly in a straight line; The equivalent gravity of general relativity holds only if the clock is accelerating.
Second, the basic principle of producing time transformation is different; Special relativity is based on two basic principles, using mathematical geometry to derive the time effect transformation relationship, But it is quite certain that uniform motion in a straight line does not produce an equivalent gravitational effect. The fundamental physical principle behind the time effect of general relativity is the variation of static and equivalent gravitation.
Third, Formulas (2) and (3) derived according to general relativity, there is obviously space-time anisotropy caused by the rotation of the earth. That is, clocks with the same other parameters have different timing speeds due to different directions of movement or latitudes. Formula (1) of special relativity is completely free of the anisotropy of Earth’s space-time.
In other words, there is a principled contradiction between general relativity and special relativity when it comes to clocks moving around the Earth's equator. It means that one of them must be wrong.