Theory of Relativity
Albert Einstein first developed the special theory of relativity (SRT) and then the general theory of relativity (GTR) from the principle of relativity. The principle of relativity is relatively simple. If at point B an event occurs, e.g. an explosion and the two points A and C are equidistant from this point B, so when the system is at rest, the event at points A and C is perceived simultaneously. However, if points A and C are accelerated (example: you are lying on a passing train), and that in direction A to C, the light event at A before C is perceived. This is due to the finiteness of the speed of light with c.
== The absolute theory and the theory of relativity ==
I have already mentioned in this wiki that absolute and relative approaches do not have to be mutually exclusive. even if Einstein rejected a preferred coordinate system. He also assumed a 4-dimensional space-time continuum. This idea is supported by the equivalence of space and time in absolute theory. Without space there is no time and without time there is no space. Space and time are closely linked and according to the world formula that I have proposed, this also applies to the mass. Without space there is no mass, but just as without mass there is no space! The absolute theory assumes two preferred coordinate systems, which strictly speaking do not stand still, but only stand still with regard to their kind of speed. The center of the universe rotates with the speed of light and therefore cannot move, because otherwise the speed would be greater c. It is the reference point for locomotion. Light quanta, on the other hand, move with speed of light and accordingly cannot rotate, because then their speed would also be greater c. Accordingly, they can be used as a reference system with regard to the rotation.
Einstein and the absolute theory versus modern physics
Like Max Planck, Einstein was a fan of conservation theorems. In particular, he postulated the mass conservation law. This can also easily be derived from Conservation of energy and the equivalence of mass and energy. Unfortunately, modern physics rejects it. One should assume that at least the basic quantities of physics will always be retained. The opinion of the absolute theory can be read in the chapter Conservation Laws. In particular, the mass conservation law, but also from division by zero mass and momentum of a photon.
Extended Theory of Relativity
It used to be said that there are at most four to five people in the world who have understood the theory of relativity. Today everyone wants to understand them. In the apartment where I used to live with my father, you had a good view of the skyscrapers of Deutsche Welle and Deutschlandfunk. I could always imagine the theory of relativity: the house is just as big as the distance between my fingers in the field of vision when I aim at the top and bottom of the high-rise buildings. One sees relativity has a lot to do with ray theorems and accordingly Einstein bases his theory on the Lorenz transformations, a refinement of the Galileo transformations. You can also see relativity earlier in game programming. At the time of the C64 the parralax scrolling became known, here you could achieve a depth effect by simply moving the objects that should appear on the horizon more slowly than those in the foreground, a proof of the time diletation.
Equations of the theory of relativity and the absolute theory
As already mentioned, the absolute theory is a part of the relativity theory, namely primarily relative to the origin. Einstein's E = mc² always applies from an absolute point of view according to the equivalence of space and time. I have been accused of only applying in the Cartesian coordinate system, or that the @quantenwelt uses a damping factor for E = mc². In absolute terms, every mass has a correlating energy, just as Einstein basically said. But besides E = mc² there are other interesting formulas of the theory of relativity.
For example the already frequently mentioned mass - rest mass relationship. The mass m is equal to the rest mass m (0) divided by the relativistic root. This equation is also valid in absolute theory. However, according to the equivalence of space and time absolutely everything moves with the speed of light c. Accordingly, it is absolutely true for every object that the rest mass m (0) = 0, and the relativistic root is also 0. Nevertheless, due to the defined division by zero, you can get meaningful results with regard to the mass. For example, an electron moves absolutely with speed of light because it rotates away the small amount that it lacks in speed of movement. Strictly speaking, from an absolute point of view, the rest mass of an electron is also 0. My own rest mass is also 0, because I also move through the universe at the speed of light. But since the relativistic root also becomes zero, I can still have a mass of 120 kg. Ultimately, everything has the rest mass zero and would not exist in absolute rest. Einstein saw it that way too and made the concept of rest mass a theoretical one. But ultimately only the mass 0, to which the rest mass would become in absolute rest, can explain why this case does not exist.
Einstein's momentum equation also applies in absolute theory: It reads E² = E (0) ² + c²p². From an absolute point of view, this is the same: E² = 0 + c² * m² * c² <=> E² = m² * c ^ 4 <=> E = mc² due to p = mc. However, I would have to check Einstein's derivation again, because normally I now assume that 0 * 0 = -1. That still needs to be checked. Presumably the rest energy E (0) is a square root of the 0 expression and not the 0 itself.
Theory of relativity and energy of rest in the perspective of absolute theory
Speaking of rest energy: Albert Einstein also saw that energy is a term made up of mass and speed. Accordingly, he was still in a mess to assume energy, even if v = 0, his so-called rest energy. Here, too, the advantage of the absolute theory becomes apparent, as it includes all speeds under v, not just movement. With this newly defined overall speed one can also better explain the energy and the difference between energy and work. According to the new v, at v = 0 the energy is also 0. A rest energy in the sense of the absolute theory would not only exist if there was no movement, but also if there was no rotation, no frequency, etc ... Here it is naive to grasp that this rest energy is always equal to 0, because the total speed is equal to 0, and accordingly there is no work and no energy.
Einstein had to think in a more complicated way, and at v = 0 still assume a total energy different from 0.