Ever go back in time? Can you turn back time

Theoretically, there are drops:

1.Have you seen Stephen Chow's "Moonlight Treasure Box"? You can turn back time, you just need to pick up the Moonlight Treasure Box.

2.Have you read Albert Einstein's Theory of Relativity? When the velocity of an object is equal to the speed of light, space-time is at rest with respect to the object.

Time can be reversed: when the speed of an object is greater than the speed of light, space-time is reversed relative to the object.

The question now is how to get faster than the speed of light?!!

If you don't have this understanding, then this statement should be very simple:

According to the relativity of motion, if you are faster than the speed of light, then time is going backwards relative to you, of course, in that case, you can only see the past, but you cannot change it.

Please do not refute the question that the speed of light is the greatest in the Theory of Relativity, because the reason is ---

I don't know. However, our physics teacher (professor) said that it is theoretically impossible, and at most we can only reach the point where time stops. Unless the theory of relativity is not ......

Personally, I don't think it's very possible to go back in time. If we could go backwards, wouldn't there be people from thousands of years in the last few thousand years? Are there also tourists from the future around us?

The creation of wormholes requires matter with negative energy, but some scientists in China have proved that energy must be positive, which is strange.

Yes, such as wormholes in the universe.

Yes When the energy of the universe is consumed, it begins to shrink and time goes backwards.

Didn't you? If anything, I think it is impossible to see the past and not change it.

I also think when I'm fine, absolutely nothing, at most I can stop.

You can't turn back the clock.

Time reversal generally refers to the closed time-like curve in the theory of relativity, given a four-dimensional space, the distance between two points in the coordinate system is 0, in Euclidean space, the distance of two points coincides with 0, but in the four-dimensional space, it is generally believed that there is a time axis, that is, these two points overlap in space, but there is still a time distance, that is, two different times at the same change to bucket point, then a new space similar to a cone will be formed in the coordinate system, commonly known as "light cone", That is, two points that coincide in space can be transferred in time.

If we are in the "light cone", it is called "time-like", and vice versa, it is "space-like", the time machine is to construct a closed time-like curve to achieve reverse transmission on the time axis, which theoretically exists, but according to the calculation, at this time each coordinate is an irrational number, that is, there is a strong space-time oscillation, resulting in space-time instability, and the transmission is completed by the non-nuclear grinding method, so the time reversal cannot be realized.

For a scientific experiment to go back in time

The famous quantum physicist John Wheeler proposed a theoretical idea in 1978, known as the "delayed choice thought experiment". The "delayed choice thought experiment" is actually an improved version of the "double-slit experiment", in which light passes through a slit in the curtain wall.

When a beam of light shines through a slit onto the wall behind it, the photon appears to exhibit particle behavior. When a second slit is introduced, interference bands appear and the photons appear to be wave-like. John Wheeler suggested adding a second curtain wall with a slit behind the first curtain wall to see if the light would be stable as it passed through the two walls.

However, it seems unlikely that this experiment will be completed.

The Australian National University research team made the experiment possible with a slight alteration of John Wheeler's thinking. Instead of using photons, they took helium atoms and passed them through a grating formed by a laser beam instead of a physical curtain wall. This way, when the atom flying at high speed passes through the second barrier, researchers can see exactly what happened to it.

The researchers found that without a second grating, the atoms followed a single line and behaved like particles. But when both gratings are present, the atoms travel along multiple lines, somewhat like the way waves behave.

Before the introduction of the second grating, the researchers measured the lines of helium atoms traversing the first grating. Experiments have found that a second grating that has not yet been introduced, but which may have been introduced, has an effect on the state of the particles. This suggests that if the helium atoms do follow a particular route, the next future measurements will affect the atom's route.

Researchers believe that this suggests that future events are influencing the atom's past.

The above content reference: Encyclopedia - Time Lapse.

You can go back in time, and I want to go back to 20 years old. I made this choice because I was in college at that age, I was at the best age, I had a carefree life, and I had a bright vision for the future.

1. At the age of 20, I am at my best age, and I want to go back to that time.

20 years old is the best age for a person, and it is the age of gold. This is the main reason why I want to return to this age. If you can turn back time, you will definitely want to go back to your best years to be in your memory, every day at the age of 20 is happy and sunny, so I hope to be able to go back to this best age to enjoy the best time again.

2. I was in college at the age of 20, and it was the most carefree time.

When I was 20 years old, I was in college. At this time, I was in the most carefree state. In terms of study, I happily study various subjects and courses in the university, and every day is relaxed and happy; In life, with the help of my parents, I don't have to worry about food and clothing, and I don't need to worry about life.

Therefore, I have the best impression of this age, and if possible, I am of course willing to return to this age.

3. At the age of 20, I was full of the best vision for the future and full of hope for life.

A person's best state is not to enjoy the best life, but to be full of longing for the future and hope for life. When I was 20 years old, I was in such a state. At this age, I am studying in college, and I am in my prime and have a great future, so I am full of beautiful visions for the future and hope for life.

This state has left me with the best memories, and I really want to be able to experience that feeling again. Therefore, I want to go back to the age of 20 and relive the good feeling at that time.