Absoluteness of Velocity Caused by Accelerating Process and Absolute Space-time Theory with Variable Scales —-The third logically consistent and really rational space-time theory
s It is proved by means of the dynamical effects of special relativity that the velocity caused by accelerating process is not a relative concept. It is an absolute physical quantity that can be determined by experiments. Therefore, the influence of accelerating process must be considered in space-time theory. Besides the Newtonian absolute theory with invariable space-time scales and the Einsteins relative theory with variable space-time scales, there exists the third space-time theory, i.e., the absolute space-time theory with variable space-time scales. At present, special relativity is divided into two parts, kinematics and dynamics. In kinematics force and acceleration are not considered so that space and time becomes relative concepts. This division is completely artificial and irrational. The space-time theory should be established on the foundation of dynamics consistently. As the three most fundamental physical quantities, the changing rules of space, time and mass with speed are dependent of accelerating processes and absolute. The real meaning of the invariability principle of high speed should be that we can not make the speed of an object with rest mass reach and exceed the sped of light in vacuum by the method of accelerating it. But if velocity is not caused by accelerating process, it is allowed to exceed lights speed in vacuum. For example, apparent tangent velocities of all fixed stars in sky are over lights speed. It is proved from the angle of symmetry that the absolutely resting reference frame exists. In order to eliminate multifarious space-time paradoxes in special relativity, and coincide with Big-bang cosmology, the absolutely resting frame is necessary. A method is put forward to look for absolutely resting reference frame. The isotropy reference frame of cosmic microwave background radiation can be regarded as the absolutely resting reference frame actually at present. This absolute space-time theory with variable space-time scales is logically consistent without contradicting any physical experiment and astronomical observation, so it can be considered as a really rational space-time theory to describe real physics world. 1. Possibility and necessity of the third space-time theory As we known that according to the Newtonian theory, the scales of space-time are absolute and invari-ableindependent of the selection of reference frames. The absolutely resting reference frame was considered to exist, though Newton did not know how to determine it. According the Einsteins theory, reversely, the scales of space-time are relative and variable, dependent of the selection of reference frames. …