What exactly was Einstein s theory of relativity?

How physics went from Newton's time to Einstein's time.

Why did Albert Einstein say that faster than the speed of light can slow down time, and even make it seem like time is passing? Before we get into this, let's introduce the concept that the speed of light does not change. That is to say, the speed of light in any frame of reference is c, which means that light does not become v+c because of the speed v of the train, and the speed of light is always c

Explain in layman's terms what the theory of relativity is about.

The theory of relativity is marked by Einstein's lifelong career. In his 1905 book entitled "On the Electrodynamics of Moving Bodies", he completely put forward the special theory of relativity, which solved the crisis of classical physics at the end of the 19th century to a large extent and promoted the revolution of the entire theory of physics. The end of the 19th century was a period of change in physics, and new experimental results hit Galileo, I

The classical system of physics established since Newton. The old physicists, represented by Lorenz, tried to solve the contradiction between the old theory and the new thing on the basis of the original theoretical framework. Albert Einstein believed that the way out lay in a fundamental change in the entire theoretical foundation.

According to the two generalizations of universal significance, the relativity of the inertial frame of reference and the invariance of the speed of light, he transformed the basic concepts of time, space and motion in classical physics, and denied the existence of absolutely stationary space and the absoluteness of the concept of simultaneity. In this system, the ruler of motion is shortened and the clock of motion is slowed down. One of the most brilliant achievements of the special theory of relativity is the revelation of the connection between energy and mass, the equivalence of mass (m) and energy (e).

e mc2, is a corollary of the theory of relativity. This can explain why radioactive elements such as radium can emit a large amount of energy. Mass-energy equivalence is the theoretical basis of atomic physics and particle physics, and satisfactorily explains the long-standing difficult problem of stellar energy.

The special theory of relativity has become a fundamental theoretical tool for later explaining high-energy astrophysical phenomena.

After the establishment of the special theory of relativity, Einstein tried to extend the application of the principle of relativity to non-inertial frames. In 1907, he proposed the principle of equivalence, based on Galileo's discovery of the experimental fact that all objects in the gravitational field have the same acceleration (i.e., the inertial mass is equal to the gravitational mass): "The gravitational field is physically equivalent to the equivalent acceleration of the reference frame."

And it follows from this that in the gravitational field, the clock must go fast, the wavelength of the light wave will change, and the light will bend.

At the same time, he deduced that light emitted by distant stars would bend as it passed near the Sun (see Gravitational Deflection of Light), a prediction confirmed by Edin in 1919 through his observations of a solar eclipse. In 1916, he predicted the existence of gravitational waves. After four years of continuous observation of the periodic changes of the radio pulse binary PSR1913 16 discovered in 1974, the existence of gravitational waves was indirectly confirmed by the announcement in 1979, which is another powerful proof of general relativity.

After the establishment of the general theory of relativity, Einstein tried to extend the general theory of relativity to include not only the gravitational field, but also the electromagnetic field, that is, to seek a unified field theory, using the concept of field to explain the structure of matter and quantum phenomena. Since this was a difficult problem that he was not in a position to solve at the time, he worked for 25 years and remained unfinished until his death. In the 70s and 80s, a series of experiments strongly supported the electroweak unified theory, and the idea of unified field theory began to be active again in a new form.

Einstein discovered the theory of relativity when he thought about what happens when the speed of motion is close to the speed of light, and how it can be matched with the measured Logonz result, and he used the equation to derive the Logonz result.

Really, I can't think about it for myself when I always encounter copying

The theory of relativity is an explanation of the operation of the universe, which will be continuously enriched in the future, but it cannot be said that it is the truth of the universe, because the theory of relativity also has problems that cannot be explained, but from the current observations, the theory of relativity is correct.

The theory of relativity is also the product of the development of human science to a certain stage, which is based on scientists' understanding of the operation of the world, expressed in a mathematical way, and then confirmed or falsified in the process of long-term observation. Like Newton's three laws in history, they are only explanations of one aspect of the universe.

Einstein's theory of relativity and the theory of relativity-based phenomena in the universe have been proven in the past, such as the discovery of gravitational waves. However, there are many things in this universe that cannot be directly observed by humans, such as black holes, although the existence of black holes can be speculated through the movement of stars, but no one knows what is inside the black hole, only speculation; Another example is dark energy, the universe is expanding at an accelerated pace but the total amount of matter has not increased, so the universe must be expanding so rapidly that there must be something at work, that kind of thing is dark energy, at present, science believes that dark energy accounts for 73% of the universe, but what dark energy is is currently unknown.

The theory of relativity also needs to be continuously verified and enriched in a broader universe, such as the influence of dark matter and dark energy, which is probably impossible to overturn, because current observations have proved that the theory of relativity is correct. It can be said that the theory of relativity is a theory that fits perfectly with experimental and observational phenomena, which is why it is accepted by the entire scientific community. But this alone is not enough, it is also backward compatible with Newtonian mechanics, which can be said to be an approximate solution of relativity theory at macroscopic low velocities.

The assumption that the speed of light does not change, the cow, the cow is not really understood by few people, and many of the conclusions that the cow is overturned with this assumption have been confirmed by the facts. Therefore, whether the theory of relativity is correct or not, only the facts have the most say.

The theory of relativity is essentially a theory about the structure of space-time, mathematically the geometry of straight and curved space, and when combined with other physical contents, it becomes a physical theory. Since the geometric theory is a strict system theory established by mathematicians, and the space-time structure of reality is conformed a priori, the theory of relativity is a correct theory that conforms to reality, and no matter how it is tested, it is correct.

I think the theory of relativity is true and has been proven to be correct under the current scientific system, and many scientific theories are also built on the basis of the theory of relativity.

I feel that Einstein's theory of relativity is true, and that the laws of nature are the same in any inertial frame of reference.

It's true. Because Eistin's theory of relativity has a certain scientific basis and has been confirmed by many parties, I think it is true.

Einstein's theory of relativity ended the domination of Newton's classical physics and ushered in a new era of modern physics. It has fundamentally changed people's understanding of space, time, and the universe. The theory of relativity has become one of the two cornerstones of modern physics and has had a huge impact on the development of modern science.

How physics went from Newton's time to Einstein's time.