On Earth, can you do an experiment on the bending of light rays, and if the head and tail of curved

It is perfectly possible to conduct experiments on the bending of light on the theory of general relativity on Earth. Theoretically, any non-inertial system can bend light. The gravitational acceleration of the Earth itself also bends light, but it is too small to measure.

But it takes a lot of angular velocity to close the curved ray, which I didn't calculate. But it feels like the linear speed may be close to the speed of light. This is basically not feasible.

But even if the head and tail of the ray are closed. Black holes also do not form. A black hole is defined as a celestial body with a defined enormous mass.

Obviously, it is impossible to "make" an object of this mass on Earth. And even if you build such a high-speed rotating platform, you can bend and close the light on it. It will also not affect the "passing" light going straight.

So it's fundamentally different from a black hole.

Do you mean to bend light with a fairly dense object? This kind of experiment is impossible to do on Earth! Because the earth can't provide that much mass! Unless the whole earth is crushed to the size of a sesame seed. In that case, it would really be a black hole.

How does centrifugal force work? I don't know too much! If the molecules are too close, they mainly exhibit repulsion! Without a huge external force, it is impossible for them to gather in a small area!

Suppose there is an airplane, with the engine turned off at high altitude, it will do a parabolic motion of high-speed descent. If a beam of light passes through it at this time, it will bend. However, due to the small g in the sky, it may be more difficult to observe the bending of light (but much easier than on the ground), requiring slightly more sophisticated instrumentation.

Regarding the second question, black holes are not possible because the Earth and the matter on it are not dense enough.

In principle, as long as one of the following two conditions is satisfied, the experiment of bending light can be carried out: 1. Create a measuring instrument with sufficient accuracy; 2. Create a large mass and small volume of material entities (such as neutrons or even a black hole), and at the same time find a way to safely place this entity so that it does not harm human beings. It's a pity:

Not only now, but also in the foreseeable future, it seems that humanity will not be able to do either of these two things. So, at least for now, the answer should be no!

In addition, if the light is really orbited in a circular orbit (where there is no reflection or refraction), then a black hole is definitely formed in the center of the orbit of the light.

Yes, have you ever heard of optical fibers? It is now commonly used to transmit signals.

It stands to reason that it can be done on Earth. But on Earth, the curved light is closed and it is impossible to form a black hole. A black hole is a special celestial body in the universe.

Yes. With a few mirrors, you can bend the light.

The latter sentence makes it completely impossible.

In the laboratory, you can use electric field + magnetic field.

But black holes cannot be formed.

Of course, it can reflect the particle nature of light.

Eddington's observations of a solar eclipse in 1919 confirmed that the sun's gravitational field could cause starlight to bend, let alone black holes. Scientists have now confirmed that the existence of black holes does distort the surrounding space. According to the general theory of relativity, light rays travel in a straight line in normal space, but when space is warped, the light rays are distorted with the direction of the space warp.

If we could take a picture of a beam of light coming into a black hole, we would see that the light spiraled toward the center of the black hole, because the black hole's massive mass has distorted the surrounding space into shape. The spiral of light pointing towards the center of the black hole fully reflects the particle nature of light.

Hope it helps!

Chinese research has found that black holes are formed by the gravitational rotation of light, which can reflect the particle nature of light, and light particles will trigger reversible nuclear reactions on the sun under the large gravitational force of black holes, nuclear fusion reactions of light particles, and fusion into hydrogen atoms.

There is an experimental model of the problem you mentioned, which is to fix 1 square meter of elastic checkered cloth around it, lay it flat, and pull down 50 mm at the middle point, which is regarded as the spatial curvature caused by the black hole, and use a small ball with a diameter of 10 mm, the weight should be very light, roll through the downward part from different directions, remove the deceleration caused by friction, and see if the number of squares rolled by the ball per unit time is the same. This model is available in some science and technology museums, you can take a look, although it is two-dimensional, but it is more vivid.

According to the general theory of relativity, gravity causes distortion of space, and if this is the case, then the deflection of light passing near the black hole is not due to a change in its velocity, but because the light passes through the distorted space, and it can be considered that the light travels the shortest distance between two points, or travels in a straight line.

From afar, the gravitational field slows down the speed of light. But when measured near light, the speed of light is still c, because the gravitational field also slows down time.

Time is relative. The closer an object is to the speed of light, the more time tends to be stationary and the mass is close to infinity. According to the current theory, time does not stand still, it can just become extremely slow.

Light is a quantum with energy, and in relativity, mass and energy can be converted, so light is bent by "gravity". The reason for this is that gravity is not a force, but a bending of space. So what is time?

Philosophy is not discussed here (it is difficult to discuss the results), scientifically, time is a measured measure, one of the seven basic physical quantities in physics, but unlike the measure of space, time is unidirectional. To speak of the curvature of time is to say that time slows down under certain circumstances, so slow that it can stand still. But it's all relative.

Everyone has heard of the theory of relativity, but in addition to showing that the curvature of space is the essence of "gravity", it also points out that time can change, which is related to the speed of motion. That is to say, the faster you move, the slower time passes on you, and the reason why we don't feel this change in the passage of time is because the speed of human motion is much lower than the speed of light, and the time effect can only be manifested when it is close to the speed of light.

For example, if you have an advanced spaceship, and the spaceship has a clock on it, and when the speed of the spaceship accelerates from v=0 to nearly the speed of light c, then the clock you see in the spaceship will move slower and slower? Or is it something else? The answer is that the clock you see in the spaceship is the same as you normally see, walking by second.

But for observers outside of the ship who are not following the ship (if any), they see a different clock, which may jump in "two seconds" or even "in a day" as the speed increases. As you approach the speed of light infinitely, an outside observer sees that both you and the clock are almost static. But you in the spaceship feel like everything is normal.

It's a bit like a day in the sky and a thousand years underground.

So to make time completely still, the only way to achieve the speed of light is to reach it, but this is not possible for matter with static mass. There is also the case of how time changes at absolute zero? This is not physically conclusive, since it is as impossible to reach absolute zero as it is to accelerate an object to the speed of light.

Do you guys have any ideas to discuss.

In short, the theory of relativity proposes that time, space, and matter cannot be explained separately, and that "time" is a description of the process of movement of matter, and "between" refers to artificial divisions. Time is the division and division of the process of material movement by thought. As far as today's physical theory is concerned, time is continuous, uninterrupted, and has no quantum properties.

However, some theories that have not yet been proven, such as quantum gravity theory, string theory, m-theory, etc., that try to combine the theory of relativity with quantum mechanics, predict that time is discontinuous and has quantum properties. Some theories speculate that Planck time may be the smallest unit of time.

I don't think it's impossible, it's possible that the light will bend in a particular situation and stop.

It's impossible to stop, it's just going through the black hole filament, a bend that happens in some cases, and light is moving at a very fast speed.

Time is relative, there is relative stillness and relative motion, and besides, everything is possible.

Yes, time is also a measurable abstract physical data, and this happens in some specific cases.

I think it's possible, after all, the world is so big that there are many secrets waiting to be discovered.

I think it's very likely that time will stop or settle down.

Black holes are so mysterious that they should be able to pause the warp of time.

Infinite redshift, and finally stays on the sub-interface.