Write a quote from Einstein on the first page of the book Einstein s Theory of Relativity 5

Just write: Is the theory of relativity really correct?

Einstein's theory of relativity revealed: the special theory of relativity revealed the connection between space, time, mass, and the motion of matter; The general theory of relativity established the theory that space and time change with the distribution of matter and the speed of motion. Einstein's theory of relativity is a basic theory about space-time and the force of incendiary power, mainly founded by Albert Einstein, and is divided into special relativity (special relativity) and general relativity (general relativity).

Applications of the theory of relativity.

The theory of relativity is needed whenever we study objects that are (a) moving in a strong gravitational field or (b) moving at close to the speed of light.

If (b) is true, but (a) is not, we can use a simpler version of the theory that calls the knower a special theory of relativity;

Historically, this was first developed by Einstein, while the broader theory of general relativity came later.

Neither (a) nor (b) is true in everyday life on Earth, so we usually don't have to worry about relativity at all.

Still, its effectiveness is important when extreme precision is required.

For example, one of the most important applications of the theory of relativity involves the Global Positioning System (GPS), which simply cannot work if we do not consider the relativistic effect.

Einstein's theory of relativity revealed the relativity of time and space.

The relativity of space-time refers to the fact that the specific space-time of each specific thing is temporary, conditional, and relative, and the specific characteristics of time-regret and space-time change with the change of the state of material motion. Einstein's theory of relativity reveals this philosophical connotation from a scientific point of view.

It is generally accepted that the difference between special and general relativity lies in whether the problem under discussion involves gravity (bending space-time), i.e., special relativity only deals with those problems where there is no gravitational force or the gravitational effect can be ignored, while general relativity deals with physics when gravity is involved.

In the language of relativity, the background space-time of the special theory of relativity is straight, that is, the four-dimensional trivial manifold is matched with the Min's gauge, and its curvature tensor is zero, also known as the Min's space-time; The background space-time of general relativity, on the other hand, is curved, and its curvature tensor is non-zero.

Applications of the theory of relativity.

1. The atomic clock on the satellite of the Global Positioning System (GPS) is very important for accurate positioning. These clocks are affected by both the slowing down of time due to the high speed of motion due to special relativity and the faster time effect of general relativity due to the weaker gravitational field (day).

The net effect of relativity is that those clocks run faster than terrestrial clocks. As a result, the software of these satellites needs to calculate and cancel out all relativistic effects to ensure accurate positioning.

2. The algorithm of the global positioning system itself is based on the principle of invariance of the speed of light, if the principle of invariance of the speed of light is not true, then the global positioning system needs to be replaced by a different algorithm to be accurately positioned.

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.

A long time has passed since the establishment of the special and general theories of relativity, which have withstood the test of practice and history, and are universally recognized truths. The theory of relativity has had a tremendous impact on the development of modern physics and the development of modern human thought. The theory of relativity unifies classical physics logically and makes classical physics a perfect scientific system.

On the basis of the principle of special relativity, the special theory of relativity unifies the two systems of Newtonian mechanics and Maxwell's electrodynamics, and points out that they both obey the principle of special relativity and are covariant to the Lorentz transform, and Newtonian mechanics is just a good approximation of the law of objects moving at low speeds. On the basis of the generalized covariance, the general theory of relativity establishes the relationship between the local inertia length and the universal reference coefficient through the equivalence principle, obtains the generalized covariant form of all physical laws, and establishes the gravitational theory of the generalized covariance, while Newton's gravitational theory is only its first-order approximation. This fundamentally solves the problem that physics was limited to the coefficient of inertia in the past, and it is logically and rationally arranged.

The theory of relativity rigorously examines the basic concepts of physics, such as time, space, matter, and motion, and gives a scientific and systematic view of space-time and matter, so that physics becomes a perfect scientific system logically.

The special theory of relativity gives the law of motion of an object at high speed, suggests that mass and energy are comparable, and gives the mass-energy relation. These two results are not obvious for low-speed moving macroscopic objects, but they show extreme importance in the study of microscopic particles. Because the speed of microscopic particles is generally relatively fast, some close to or even reaching the speed of light, the physics of particles is inseparable from the theory of relativity.

The mass-energy relationship not only creates the necessary conditions for the establishment and development of quantum theory, but also provides a basis for the development and application of nuclear physics.

The general theory of relativity establishes a well-developed theory of gravitation, which mainly deals with celestial bodies. Up to now, relativistic cosmology has been further developed, and gravitational wave physics, compact astrophysics, and black hole physics, which belong to the sub-disciplines of relativistic astrophysics, have made some progress, attracting many scientists to conduct research.

A French physicist once said of Albert Einstein: "Among the physicists of our time, Albert Einstein will be at the forefront." He is, and will be, one of the most brilliant stars in the universe of mankind", and "in my opinion, he may be greater than Newton, because his contribution to science has penetrated more deeply into the structure of the basic essentials of human thought." ”

The quality will change with speed.

The speed of light cannot be surpassed.

Time is not absolute.

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

There are two sides to everything.

There are good things compared to bad aspects.

"On the Electrodynamics of Moving Bodies" in the narrow sense, "Fundamentals of General Relativity" in the broad sense

If you're referring to the article on the electrodynamics of moving bodies, you can find it by the name Google... Of course this is only special relativity...

There is no English, no German, and Chinese has been seen in Xinhua Bookstore.