What is the content of the original text of relativity in Chinese .

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The theory of relativity is a basic theory about space-time and gravity, mainly founded by Alberteinstein, and is divided into special relativity (special relativity) and general relativity (general relativity). The basic assumption of relativity is the principle of relativity, that is, the laws of physics have nothing to do with the choice of frame of reference. The difference between special relativity and general relativity is that the former deals with the laws of physics between frames of reference (inertial frame of reference) that move in a uniform linear motion at a uniform speed, while the latter generalizes to frames of reference with acceleration (non-inertial frames) and is widely used in gravitational fields under the assumption of the equivalence principle.

Special theory of relativity: It is found that the speed of light measured in any two inertial frames (uniform straight line without rotation) is the same, if space and time are absolute, if the relative velocity of two inertial frames is not zero, it is absolutely impossible, either give up the conclusion that the speed of light is the same, or abandon the absolute view of space-time, Einstein chose to abandon the absolute view of space-time, and concluded that in any two inertial frames, the speed of light is the same (referring to the data tested by people in the inertial frame), but the space-time of the inertial frame itself has changed, The meaning of the change in space-time is that 1 second has passed in A, and 100 seconds have passed in B, both of which occur at the same time, and an object in A moves a distance of S, and it appears that it has moved S in B'distance, two inertial frames with relative velocity has a definite formula for space-time transformation. A and B each have a complete set of space-time, and the laws satisfied in the inertial frame A are also satisfied in B.

2.General relativity: Obviously, it is necessary to develop two arbitrary non-inertial frames, and the law satisfied in non-inertial frame A is also satisfied in non-inertial frame B, so that all the conclusions previously reached in physics are not useless.

Let a be an inertial frame, and if b is a non-inertial frame, then b is more distorted. Is there an inertial frame in this world? Albert Einstein said no, the universe in which we humans live is a non-inertial system.

Any object with mass distorts the space around it. Just like in a car that is doing acceleration motion, in this non-inertial frame, the balls suspended from the roof will float up like backwards, and from the perspective of the people in the car, it is undoubtedly the space on the car that has changed, and the balls on the roof are suspended vertically in the space inside the car, although in the eyes of people outside the car, the ball is not vertical (when examining this example, the space on the earth can be approximated as an inertial system). A ray of light is a straight line at a uniform speed in an inertial frame, but when it travels through the universe, humans detect that it is not a straight line at a uniform speed, for example, when passing a massive star such as the Sun, it will bend, in fact, because the space around the Sun is distorted.

Finally, after rigorous mathematical argumentation, the law satisfied in the non-inertial frame A is also satisfied in the non-inertial frame B, which makes the general theory of relativity really have great practical use.

Einstein's theory of relativity simply refers to the relationship between time, space, and moving matter! Einstein's theory of relativity proved the relationship between mass, velocity, gravity, and time in a formula! That is, the higher the velocity per unit of time, the greater the mass, and the greater its own gravitational attraction As for his mass-energy conversion equation, it simply explains how much energy it takes to accelerate something with mass to the speed of light!

Einstein used the formula in his theory of relativity to prove that the space-time we live in now is located in a continuous four-dimensional space-time (i.e., length, width, height, time), and that it does not involve quantum mechanics in itself, because quantum mechanics is very far away from the time of relativity! I will introduce you to some science fiction movies, "Through Time and Space Trilogy" and "Back to the Future", these two movies can be called classics, because the directors of these two movies can be said to have introduced the theories in "Relativity" and "Quantum Mechanics" when making this movie, so that they do not contradict reality!

Since we talked about the relationship between mass, velocity, gravity, and time, then because you continue to accelerate the molecules of the object itself, the molecular cycle will slow down, and in other objects, the period of the atom will also slow down, and the mass itself will increase, the half-life will be extended, and the energy consumption will become smaller, then this is microscopic, and these microscopic phenomena will be manifested on macroscopic objects, so we will push it up in turn, according to Einstein's theory of relativity, when it reaches the speed of light, all this will stop. By analogy, all microscopic motions beyond the speed of light will be reversed, and after being reflected in the macroscopic direction, it is not difficult to imagine that all this will begin to be reversed! Then the theory that complements it is the theory of multiple universes, because only the multiple universes can turn back your time, and will store your past!

is the Gamma parameter =1 (1-v 2 c 2) is the division sign is the root sign v is the actual velocity c is the speed of light is used for the shrinkage phenomenon and time dilation, and is used for the Lorentz transform.

The animated short provides a brief introduction to Einstein's general theory of relativity.

The theory of relativity is a theory about space-time and gravity, mainly founded by Albert Einstein, and can be divided into special relativity and general relativity according to his research object.

The theory of relativity and quantum mechanics revolutionized physics, and together they laid the foundations of modern physics.

The theory of relativity has greatly changed mankind's "common-sense" concept of the universe and nature, and has put forward new concepts such as "simultaneous relativity", "four-dimensional space-time", and "curved space-time". However, in recent years, there has been a new understanding of the classification of physical theories, which distinguishes classical and non-classical physics according to whether their theories are deterministic, that is, "non-classical = quantum". In this sense, the theory of relativity remains a classical theory.

The animated short provides a brief introduction to Einstein's general theory of relativity.