length expansion

   A black hole is a very gravitational star. So black holes devour the surrounding matter, and even light cannot escape them. There is a singular point in the very center of a black hole. When an object is sucked into this singularity, its appearance is very strange.    As the object is sucked into the black hole, it is sucked into the singular point as the length increases infinitely by tidal gravity in the vicinity of the horizon. This part is very characteristic. In the theory of length contraction, however, this is a little bit different. In length contraction theory, when the speed of an object reaches a relativistic speed, the length approaches zero. It means that it gets very short. This part collides head-on with the explanation that the length of the black hole is increased by tidal gravity to infinity. So, now I will ask you a question. When an object falls into a black hole, Does the length of the object shrink to zero? Or is it stretchin...

Hello    Today, I would like to take a look at the questions posted at https://physics.stackexchange.com/. The contents are as follows. There is an iron bridge. This bridge cannot withstand the weight of the entire train, but if it only has to support part of the train as shown in Figure 1 below, it can do it. Figure 1. Non-relativistic consideration, if only a part of the train is on the iron bridge, the iron bridge will not collapse Therefore, when the train runs slowly, it is placed only on a part of the bridge, so the bridge does not collapse. (Click below to see the original.) However, if the length contraction is correct, it will be as shown in Figure 2 below. The train is contracted, the entire train is placed on the bridge, and the bridge must collapse. Figure 2. When the observer on the ground sees it, the entire train has come up and the iron bridge must collapse (Length contraction) However, from the standpoint of the perso...

   Hello. Today, I'm going to take a look at what's registered on physics.stackexchange.com. This also corresponds to the paradox of relativity, which does not appear in any form of book. If the current theory of relativity does not have any logical deficiencies, this paradox should not occur. But the reality is not so. The contents are as follows. https://physics.stackexchange.com/questions/16180/is-there-a-contradiction-of-the-theory-of-relativity-here-length-contraction Suppose there is a laser beam powerful enough to burn through iron aimed at a piece of iron. You observe this event while you are in the same frame as the piece of iron and the laser-beam generator. In this frame, there is a certain part of space that you know that the light is traveling through. Fig. 1 Electromagnetic wave  © helder100, 출처 Pixabay Now say that you get in a rocket that travels a few meters away from the laser beam in a direction perpendicular to eventually at a co...