Chapter 90 Four-dimensional Concept

Liu Qing repeatedly said what Duan Fei said: "God's guidance? What is God's guidance?" She still hasn't figured out the problem.

"People can't come back to life after death, don't they..."

"Of course, people can't come back to life," Duan Fei took over the topic and said, "but they are not dead. The so-called death includes two meanings. The first meaning is easier to understand. The body is dead. Specifically, all the functions of the whole body stop moving and become inactive, but it does not mean that these functions are not It will start again. For example, vegetative people can still operate the body with the help of machines, but there is no consciousness and no thought. From a medical point of view, the definition of death actually refers to brain death, which is a large area of brain cells in the human central nervous system. According to the current medical theory, the necrosis of brain cells It is irreversible, that is to say, when a large area of brain cells are necrotic, the nerve function cannot be restored, and people's consciousness and thoughts will never be restored, and rise to the rough elephant level. Another meaning of death is that the soul disappears. Everything has a material basis, and the soul is based on the body as the material basis. When the body dies, the soul will naturally disappear without any support, but some senior priests in ancient Egypt have their own opinions. They think that there is a place in the world where the souls of the dead can be stored, that is, the fourth space. As long as they get God's permission, the fourth space will open.

"The soul? The fourth space? What are they?" Liu Qing has been a good child who loves learning since she was a child, and it is naturally her style to break the casserole.

"I also want to know what the soul is, whether it is white or black, but--" Duan Fei spread his hands and said helplessly, "In fact, this question has always puzzled me. I always thought it was just a concept, and the material basis of this concept should be hidden in the brain nervous system. Some corner, but now it seems that things seem to be more complicated. Some ancient legends mention that the soul can drift outside the human body. This is a very profound problem. I don't know whether this is a philosophical problem or a scientific problem.

"Well, let's put aside the problem of the soul," Liu Qing is also a highly understanding person. She is very interested in the fourth space: "Let's talk about the fourth space."

Some people say that the theoretical basis of the fourth space is the famous Einstein's theory of relativity. According to the theory of this legendary scientific giant, cosmic space is a four-dimensional space composed of three axes X, Y and Z plus a timeline. It is very difficult to understand four-dimensional space. I have also spent on this theory. After some time to study it.

"Okay, let's talk about your research results." Liu Qing sat down with a smile. She planned to listen to this theory about the fourth space.

"Actually, this theory may not be correct, it's just a guess." Duan Fei stressed that he didn't want to mislead Liu Qing because of this.

"I understand that the existence of the fourth space is a problem in itself."

"Okay," Duan Fei also sat down. How can we explain these things that are more difficult to understand than philosophy? Duan Fei thought for a moment and said, "Let's start with one-dimensional space. One-dimensional space is a straight line, and there is no beginning and no end. Suppose there is a person standing on this straight line. He can walk arbitrarily in two opposite directions. If we set his life to be 60 years old and can only walk 500,000 kilometers on this line, then his life is this straight line of 500,000 kilometers long. This is his one-dimensional space, a straight line of 500,000 kilometers.

"Well, let's talk about two-dimensional space. If someone teaches this person the theory of two-dimensional space and tell him that the world is actually two-dimensional, not only the X-axis, but also the Y-axis, the X-axis and Y-axis form a plane. No matter which axis has no starting point or end, then this A plane has no shape. You can't say that it is square or round. It is an infinite plane, so that the person just now is lucky to live in a two-dimensional world. In the same plane, he has countless straight lines to choose from. The range of activities in his life is no longer a simple straight line, and It's a plane, maybe round, maybe square, maybe there is no shape at all.

"It is easier to understand from one-dimensional space to two-dimensional space, so it is a little difficult to understand from two-dimensional space to three-dimensional space. On the original plane, add a Z axis to form a three-dimensional space. The simplest three-dimensional figure is the ball. Just now, that person can only walk on one plane. Now he has more choices, facing up and down, and there are countless planes for him to choose from. His life trajectory has increased countless times. He can fly to the sky or drill underground. In the same size, the point he has on a sphere is an astronomical multiple compared with any of its cross-section. Of course, the point on a plane with a diameter of 500,000 kilometers is also an astronomical multiple compared with the point of a straight line with a diameter of 500,000 kilometers.

"Well, the most difficult thing to understand is the fourth space. On the basis of the original X-axis, Y-axis and Z-axis, add a timeline T. First of all, we need to understand a problem. This timeline is a dynamic variable. Take the story just now as an example to illustrate the meaning of four-dimensional space. We called that person A, next There is also B looking at him. If they are on the same timeline, that is, the timeline T is 12 noon, then B and A stand alone and walk on the ground alone. B can see A walking on the ground. The reason why people can see things is that the light shines on A's body and reflects into B's eyes. After the reflected light was processed by B's optic nerve, he got the information and knew that there was a A walking there. This is that B saw A walking. Well, the most difficult part came out. If A moves faster than the speed of light and has the same problem just now, can B still see A? I can't see, because the human optic nerve must go through a correction process to determine that information, that is, the shape and color of the object can only be obtained after continuous data are processed. Because A's movement speed is faster than light, he left before the light reflected on his body reaches B's eyes. B's vision What is obtained is some incoherent garbled codes. His optic nerve may treat these garble codes as a virtual image, just like ghosts that people often say. Obviously, the nervous system can't really know what's going on. At this time, A and B are not standing on the same timeline T. For example, if someone What will happen if you run forward for two days at twice the speed of light and then stop? He will see people and things a day ago. What does it mean? Time goes back? Wrong, it's not going back in time. What has happened in the world can never come back. It's just that this person runs into another timeline. The time difference between the two people is one day. This is the fourth space. What happens on different timelines cannot overlap. Standing on the same point, even if two people are there After ten years and eight years, because of different timelines, two people will never collide. This is the concept of four-dimensional space. Countless three-dimensional spaces form a four-dimensional space. A four-dimensional space is actually a collection of countless three-dimensional spaces, even if there are two three-dimensional spaces with exactly the same parameters, in a four-dimensional space. They will not overlap, just like in a two-dimensional space, even if the parameters are exactly the same, they will not cross no matter how long they go.

"One-dimensional space is composed of countless points, and two-dimensional space is composed of countless × countless one-dimensional spaces. The three-dimensional space includes countless × countless two-dimensional spaces, so the four-dimensional space also contains countless × countless × countless × countless three-dimensional spaces. When it comes to four-dimensional space, the number that will not overlap is quite large.

After listening to this, Liu Qing's remaining reaction was to open his eyes and look at him. However, Duan Fei's words were not finished. He continued: "It is said that the fourth space is under the control of the gods. Fei An imitated the king pharaoh of ancient Egypt and obtained the pass of the fourth space. At the moment of his death, his soul When he came to the fourth space, because the technology was too backward at that time, his soul had to travel for a long time in the fourth space to distinguish between southeast and northwest, and then the empty soul had to gradually find the memory. When it understood that its owner had left a corpse waiting bitterly, then the soul that had recovered the memory would find some way to find it. When it came to breaking through the door of the fourth space, things developed here and problems appeared.

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