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1. At present, the four-dimensional space referred to by physics is length, width, height and time.

2. Human beings are located in three-dimensional space, four-dimensional space-time. The so-called three-dimensional space is what we refer to as length, width and height. Four-dimensional space-time is to add time to the three-dimensional space of length, width and height.

To put it bluntly, four-dimensional creatures can travel to different times at will. It's like we're moving forward and backward.

3. In physics, the number of space-time coordinates is described by dimensions, and the four dimensions are four dimensions, which are composed of countless three-dimensional dimensions, and three-dimensional is composed of countless two-dimensional dimensions. Other high-dimensional compositions are so on. Dimensions above three dimensions are collectively referred to as high dimensions.

What we can see is a "distorted object" as we understand it, showing the confusion of time and space. Friends who often read science fiction and science fiction movies know that the existence of human beings actually exists under the conditions of a "three-dimensional space". Three-dimensional, is a means used by scientists to divide the space of objects, in plain language, a line, is one-dimensional, and three lines can form a three-dimensional, such as the cuboid we see everywhere, the cube; Human beings live under such spatial conditions.

Since there are three dimensions, there must also be four dimensions. What can we see in the fourth dimension?

The significance of the four-dimensional space is to break the boundaries of our existence and achieve the effect of "transcending time". We all know that according to the theory of "space-time collapse" proposed by Albert Einstein in his later years, the existence of the phenomenon of "cosmic travel" was confirmed. Entering the four-dimensional space is actually such a process of cosmic travel.

Human beings know space and things through the three-dimensional world, so any object seems to us to be complete and coordinated three-dimensional. However, because the four-dimensional space breaks the time and space in our habitual thinking, visually, it is very likely to bring about the effect of "distortion" in the usual sense.

We can even see the past and the future through the four-dimensional space. Those who are familiar with religious theology may know that in Buddhism, the Buddha has a supernatural power called "karma", which says that the Dharma eye of the Buddha can transcend time and see the future and past development of all things. This is really not complete "nonsense".If we really live under the four-dimensional space, we can indeed trace back through a point in the four-dimensional space, and see time and space in a linear sense from a point and a line.

To sum up, in the four-dimensional space, we can see everything that has been "distorted", as well as time and space.

With the development of science, our understanding of things is more and more abundant, in physics and mathematics, we can understand the sequence of n numbers as a position in an n-dimensional space, when n is equal to 4, the set of all such positions is called four-dimensional space, because we are in the three-dimensional world, so everything in the four-dimensional space is beyond our cognition, and we can't really see things in the four-dimensional space.

Four-dimensional space. When people talk about "four-dimensional space", they often mistakenly refer to the four-dimensional space-time mentioned by Einstein in his general and special theories of relativity. This widespread misuse is due to the popularity of popular science and literary works related to the theory of relativity.

A true four-dimensional space is a space with four spatial dimensions, or four orthogonal directions of motion. This is the kind of space that mathematicians use to study four-dimensional geometric objects.

Looking at the low-dimensional space from the high-dimensional space.

We are in three-dimensional space, it is easy to see the shape of matter in low-dimensional space, for example, a point is something in zero-dimensional space, we don't need any vector to measure it, in one-dimensional space, it is a straight line with only length, and two-dimensional space is space with width added to one-dimensional space, and it seems that the thing inside is a two-dimensional figure.

And the space we are in is the three-dimensional space, that is, the height is added to the two-dimensional space, so in the three-dimensional space, the objects are three-dimensional.

Looking at the high-dimensional space from the low-latitude space.

Due to the limitations of low-dimensional space, it is difficult to imagine things in high-dimensional space in low-dimensional space. In the zero-dimensional space, all cognition stays at the understanding of a point, and when something in the high-dimensional space falls into the zero-dimensional space, in their opinion, it is a point.

And the same is true of one-dimensional space, in one-dimensional space, staying in the understanding that everything is a straight line, even if the higher-dimensional space falls into the one-dimensional space, it is still a straight line in the eyes of the things in the one-dimensional space.

Similarly, the same is true for two-dimensional space, if a person in three-dimensional space falls into two-dimensional space, the creature in two-dimensional space can only see that person is two-dimensional, which is equivalent to a paper man.

Look at the four-dimensional space from the three-dimensional space.

To find out what we can see in four-dimensional space, we need to first understand a concept, imagine the process of stacking pieces of paper side by side. If one doesn't stack them one by one, the papers won't extend into three-dimensional space. In the same way, in order to enter the four-dimensional space, one must move in a new direction, and that direction must be outside the three-dimensional space.

To reach each point in the four-dimensional space, one needs to move not only forward and backward, left and right, up and down, but also along a pair of new directions.

In summary, matter in four-dimensional space moves in four directions, and judging from the three-dimensional projection, this is probably the case.

Of course, this is just to look at the things in the four-dimensional space with our three-dimensional cognition, and we know from the above-mentioned things in the high-dimensional space from the low-dimensional space, and we know that this is just our current speculation, and we don't know the real things in the four-dimensional space.

What do you see in 4 dimensions?

The four-dimensional space may be as dreamy as in a science fiction movie, and if we want to see the four-dimensional space, we may have to transcend time, and this may be difficult for us to survive, and to survive may be to look at the four-dimensional world from God's perspective.

Because there is no mental space at all, everything we see in the mental space is just a kind of conjecture and assumption of all of us, and it is not real at all.

In four-dimensional space, we may see the past or even the future. Because in four-dimensional space, time does not proceed in a normal order.

You may see some dream worlds, which are particularly mysterious. Even you wouldn't expect such a scenario, and there are many things that have not been realized.

In the four-dimensional space, there is no fixed form, only the mind, which can see all the changes in the dimension of time. The three-dimensional dimension we live in now does not have the dimension of time, and time is only the rate of change of space set by human beings. The true four-dimensional space has the dimension of time.

So there is no time in the world we live in now, and the past, present, and future are not available. The fourth dimension is a telepathic invisible world.

We can see the past and the future, different dimensions, parallel space, but as three-dimensional creatures, we may not be able to see them, and four-dimensional creatures can see us, which is too sci-fi.

Four-dimensional space has one more dimension than three-dimensional space, which is the time dimension. Entering the four-dimensional space and looking at the three-dimensional world, we human beings are like a kind of paper people who cannot understand their existence and cannot see them, but we have no privacy in front of them, and let them change themselves.

The four-dimensional space is based on the three-dimensional, with the time dimension, we can see ourselves at different time nodes, as well as the development and changes of history.

What is Four-Dimensional Space? What: Is it a four-dimensional space, and what could be in a four-dimensional space?

According to the superposition of space, space is a space where countless three-dimensional spaces are superimposed together. Of course, the purely spatial nature of this is not enough to explain it. It should also have the nature of time, because space and time are inextricably linked, but humans have never seen what a higher level of space is like, so it is difficult to say what it is.

First of all, the superposition of space in space is relatively easy to understand. For example, our current three-dimensional space is superimposed on countless planes, but if we want to separate these countless planes, then this is not a three-dimensional space, but a two-dimensional space model one after another. This involves some collections, some extreme thinking.

Perhaps differential equations in higher mathematics have such an idea to cut an irregular object. It becomes an infinite number of planes and then superimposed, but this superposition is still coherent.

The second is the change of time. It is said that time and space are inseparable. What is the difference between our three-dimensional space and two-dimensional space?

What's the difference between us and high-rise space? It should be said that the wider the dimension of space, the greater the possibility of using time. We're just on a timeline and it's not fluctuating.

When we reach the four-dimensional space, it may have an impact under a certain force. When time comes to local changes, people reach six dimensions, even six dimensions, or even seven dimensions, and a time plane can be formed. When they reach the ninth dimension, they form a body of time.

Time is something that cannot be seen or touched. But the higher the level of space, the more you know about it.

Time and space are the most essential things in the universe, and they are also the most magical things. Albert Einstein and some of the great physics scientists who came after were working on this thing, both macroscopic and microscopic, but no one could say exactly how time came about, and time would eventually go, because our current technological development may still be at a very high level. Very early start-ups.

If you could walk into a four-dimensional space, what would you see? First of all, let's take a look at what happens to a flat person in a two-dimensional space when he comes to a three-dimensional space. Because the flat man lacks the latitude support of the z-axis, he will not be able to stand in three-dimensional space and will fall.

In the same way, if you enter the four-dimensional space from the three-dimensional space, you will also fall because of the lack of the fourth dimension, which will cause you to be unable to stand in the four-dimensional space, and it is also possible that the atoms that make up your body will be pulled by the fourth-dimensional force and break and disintegrate. Now let's assume that you can stand up in a four-dimensional world and still be alive, will you see four-dimensional objects?

Objects in four-dimensional space are called superbodies for the time being, such as a cube in three-dimensional space, and in four-dimensional space we call them hypercubes. We know that the surface of a cube in three-dimensional space is composed of six two-dimensional planes, and the surface of a hypercube in four-dimensional space is composed of eight three-dimensional cubes. The front cube is blue, the back cube is yellow, and then there are 6 flattened cubes that make up the surface of the hypercube.

We also use the flat man in the two-dimensional world as an example, the flat man never sees the face in the two-dimensional world, only sees the dots and lines, when he comes to the three-dimensional world, because he lacks the help of the z-axis, his perspective is still two-dimensional, so the scene that the flat man sees is still the two-dimensional world, unless he becomes a three-dimensional human.

In the same way, if you enter a four-dimensional space from a three-dimensional space, even if a four-dimensional hypercube is placed in front of you, because you lack the help of the fourth dimension, you will still see a three-dimensional picture, unless you have a third eye, which is in the fourth dimension, so that you can see the four-dimensional objects of the four-dimensional world.

Four-dimensional space, also called"Euclidean four-dimensional space"is a standard Euclidean space. It is a mathematical concept that can be extended to the n-dimension; The fourth dimension of four-dimensional space refers to the dimension of space with the same properties as x, y, and z.

In physics and mathematics, a sequence of n numbers can be understood as positions in an n-dimensional space. When n = 4, the set of all such positions is called a four-dimensional space. The four-dimensional space is different from the three-dimensional space that people live in because there is one more dimension.

Through the evolution of one-dimensional, two-dimensional, and three-dimensional space, some conjectures about four-dimensional space have been proposed. Although these conjectures cannot be proven correct now, many scientific theories are started by conjectures. Nowadays, scientific theories are generally based on the summary of phenomena, and there is no accurate and clear understanding of the phenomena in the four-dimensional space, or the phenomena are seen but do not think that the phenomena are caused by the four-dimensional space.

Of course, it is also possible to define the topological space of the point, line and surface as the fourth dimension, the fifth dimension, the sixth dimension and even the nth dimension. This is easy to achieve in mathematical formula reasoning and derivation, but it is difficult to correspond and imagine reality.

But the general person mentions"Four-dimensional space. ", but it is often mentioned in Einstein's theory of relativity"Four-dimensional space-time"(It's called.)"Minkowski space") to be confused.

The four-dimensional space is based on a dimension on top of the three-dimensional space, in which human beings can obtain extraordinary abilities; Four-dimensional space is that people think that a surface has countless lines, and a line has countless points, and the combination of these points, lines, and surfaces will form a four-dimensional space.