Addition theorem of speeds
Einstein and the absolute theory
You can always say and that remains the main reproach of my theory that it is incompatible with Einstein. Albert Einstein was very inclined to generalize. In the case of E = mc², he got it right. In the case of the addition theorem of velocities, however, not. His statements are by no means wrong, but nowadays it is taught in schools that, according to Einstein, there can be no faster, relative speed than c. This is derived from the special Theory of Relativity, although Einstein gave up the generalization of this idea in the general Theory of Relativity. The explanation of the theorem is simple and in no way overrides Newton's addition theorem. Newton's theorem is just absolute.
Einstein always starts from the Lorentz transformation. Even Wikipedia writes in the article that the Lorentz transformation only applies once, like the Galilean transformation, which it replaces, to the perception of a stationary observer with regard to the coordinates of a relatively moving object, i.e. in case of doubt an approaching or receding object. This is the premise for the Theory of Relativity. Einstein's and Lorentz's idea is much bigger, more beautiful and more magical than the current opinion makes it. Einstein says that if an object moves away from me at 20 km / h, the frequency and the measured speed that arrives at me is just as great as if it were at rest. This is Einstein's addition theorem of the velocities. The really fantastic thing about it is that the force of the movement of light experiences an opposing force as it moves away in the amount of speed. That's Newton's theorem. Nevertheless, space and time curve in such a way that for me as an observer, the force of the moving away is balanced, so that I perceive the frequency as if the object were at rest. From this it follows that the frequency must absolutely be lower, so that it is only made higher again through space curvature and time dilation. The speed of the light rays is absolutely lower but is made higher again by the curvature of space and time dilation, so that I, as an observer, measure a constant frequency and speed of light. This is much more magical than the usual explanations on the Internet, which are a bit wooden. In fact, the beam of light described moves at c - 20 km / h, the observer just doesn't notice it.
Einstein and the addition theorem of the velocities
I may be accused of not footing or referring to others. In the meantime, in the 25 years of my interest, I have read so much that I cannot possibly assign it to the individual. But here I am referring to an essay by Einstein, namely "On the electrodynamics of moving bodies" (Annalen der Physik 17 (1905), H. A. Lorentz "Das Relativitätsprinzip", p. 38ff.). Here Albert Einstein describes the addition theorem of velocities, and in school it is made out of this: Nothing can move relatively faster than light. Otherwise the space bends so that the highest relative speed of movement is c. Even Albert Einstein gave up this idea, but it stays that way in the training. In the article he finally proves that if two systems move along one axis (the X-axis), the relative speed between them is always less than c. The entire essay is based on the assumption of speed along one axis. In this article he tries to generalize for movements from the Z-axis, but these are also parallel movements and also considered from a system at rest. There is no answer to the question of what the maximum relative speed can be. He says succinctly that all movements form a group. It does not answer the question of the relative speed between two oppositely moving systems.
The absolute theory and the addition theorem of speeds
Ultimately, the absolute theory remains with simple vector addition or with the addition of the scalars. If a body rotates at the speed of light, it cannot move forward, like the black hole defined by Albert Einstein. However, if a body moves at the speed of light, it can only rotate minimally or even tremble in the sense of a frequency. This additional amount of vector addition cannot be lost. In fact, according to Einstein's equation, if the body were moving relatively at 2c, i.e. double the speed of light according to the absolute theory, the relative speed according to the special theory of relativity would be 4/5 c if one were to absolutize this relative thought. The Theory of Relativity only describes how an observer would then perceive the speed and not how the speed is in reality.
Twin paradox and relative speed
Had Albert Einstein himself been so convinced, the twin paradox would have been solved. The twin paradox assumes that two photons move symmetrically in opposite directions. Although no exchange of information is possible due to the maximum velocity of c inherent in relativity, both move symmetrically. If one turns left, the other turns left too. If one were to take Einstein's addition theorem absolutely, this problem would be solved, since the two photons could not move in opposite directions at all. The relative speed between the two would remain c, so that an exchange of information would be possible. According to Einstein, this connection could easily be checked nowadays by having two lasers beam in opposite directions. If one measures c at two points on the respective line, the absolute setting of Einstein's addition theorem would be refuted. According to the absolute theory, information in the form of virtual particles can also be exchanged at faster than light speed, even if this only had a spiritual effect.
I recommend the following books on Einstein's views and the history of the addition theorem of velocities: