length expansion

Previously, when interpreting a straight wire as a theory of length contraction, we looked at some problems. Below is a link to my last post. Today we will look at the circular wire. Origin of magnetic force   It is well known that electric and magnetic forces are the same force. But it is still not easy to qualitatively understand it. Today's magnetic force is interpreted as the 'relativistic effect of moving charge'. This field was pioneered by Purcell. When I talked about the last straight wire, I had a little explanation, but let's take a look at it again. Figure 1. Movement of charge from the lab point of view The test charge moves to the speed of v to the right, and the negative charge moves to the speed of v o to the right. From the point of view of the test charge, it is as follows. Figure 2. The movement of charge from the viewpoint of the test charge From the test charge's point of view, it is Purcell's calculation...

   Romeo and Juliet were passionately in love, but their tale eventually ended in tragedy. Occasionally, a first love may bear fruit, but Romeo and Juliet did not. In relativity, there is a pair with a similar fate. It is "length contraction and time dilation". These are fates that can never be achieved. Those who anticipate love that cannot be done Romeo and Juliet loved each other, but the "length contraction and time dilation" couples are a little different. Time dilation is certainly the existence of confirmed reality, but length contractions are merely hypotheses that have not been proven. Over a hundred years, there is not a single piece of experimental evidence. Below are people who point out these problems of length contraction. In fact, there are many who point out these problems. In the link below, Buenker in Germany is aware of the expansion of the length and is the one who claims that the expansion is correct. 1) The person on the left...

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...

   Today, let's look at the continuity in the nature of light. There are several important properties of light. The fact that the velocity in a vacuum must be constant, and that the speed is the same in all directions, can be explained by the term "constancy of the speed of light". But there is one thing more fundamental than this. The path of light should be ' continuous '. Can the photon disappear at some point while it is transmitting in space, and can it reappear at another point? In relativity, this never happens. This is an extraordinary science, beyond modern science. Therefore, these things cannot be accepted or recognized in the theory of relativity. This is a series of posts. It is better to read the following article first. Understanding the principle of invariant light speed 01 When we talk about light in relativity, there are a few things that we should basically assume. This is the constancy of speed of light proposed by Einstein, bu...