The Science Fiction World of Xueba

Pang Xuelin said: "Sophon, can you observe the physical parameters of this space now?"

Sophon frowned and said, "It's a little troublesome. The space in the wormhole should belong to the five-dimensional space-time, and there is no way to accurately observe it."

"You mean, there is still a time dimension in this space?"

Sophon said: "That's right, in this space, the second law of thermodynamics is still valid, and there is no way to go back in time."

Pang Xuelin nodded. According to theoretical calculations, there should be a kind of wormhole that can travel through time.

But obviously, this wormhole they are in is not the case.

This is just a wormhole in the sense of four-dimensional space. An extra space dimension allows entities such as spaceships to travel faster than the speed of light across the limitation of space distance.

This is as if there are two points AB on a curved two-dimensional plane. If the two-dimensional plane passes through, the distance from point A to point B is one light-year.

But if the two points are connected by a straight line through three-dimensional space, the distance between point A and point B can definitely be greatly shortened.

The wormhole where Pang Xuelin is now connects two points in three-dimensional space on the scale of four-dimensional space.

Pang Xuelin looked at Sophon and tried to take a step in her direction.

But in the next second, he and Sophon were staggered by more than ten meters in an instant, and Sophon appeared behind him.

"interesting."

Pang Xuelin laughed.

The sense of direction in three-dimensional space obviously does not apply to four-dimensional space, and the orientation of the sophon he perceives is obviously not the real position of the sophon.

"Tomoko, can you come to me?"

"I'm afraid not. I'm trying to perceive the fourth dimension now, but it's hard to understand how this dimension exists."

Pang Xuelin pondered for a moment, then said: "Sophon, I remember that high-dimensional objects were described in this way in the three-body world. In three-dimensional space and time, an elementary particle is equivalent to a particle from a one-dimensional perspective. , the elementary particles begin to show the internal structure. From the three-dimensional perspective, the elementary particles have shown a macroscopic three-dimensional structure. From the four-dimensional perspective, the elementary particles are equivalent to a planet... The elementary particles from the seven-dimensional perspective,

Its complexity may already be comparable to that of the solar system in three-dimensional space; from an eight-dimensional perspective, the elementary particle is as grand and vast as the Milky Way; when the perspective reaches nine dimensions, the quantity and complexity of the internal structure of an elementary particle have already Equivalent to the entire universe..."

"So, if you expand the sophon into a four-dimensional structure now, what will it look like?"

Tomoko blinked and said, "Honey, I understand!"

Immediately afterwards, a strange mirror geometry appeared in Pang Xuelin's eyes.

It is called strange because although it is stationary, its overall shape is changing all the time.

Pang Xuelin knew that this was because his eyes and brain were unable to perceive and construct the fourth dimension.

"Sophon, can you measure some basic physical parameters of this space now?"

Pang Xuelin asked.

"Let me try!"

After a while, Tomoko's voice sounded again:

"The speed of light in a vacuum in four-dimensional space: =1.56*10^18m/s; the fine structure constant: α=1.6993*10^-15W/m^2/k^-4; Planck's constant..."

Before Sophon could finish speaking, he suddenly yelled, "Honey, it's too late, we're going out of the four-dimensional space soon!"

In the next second, Pang Xuelin felt the ship shake slightly, the colorful lights in his eyes instantly dissipated, and the objects in the spaceship that showed a sense of endless depth seemed to be controlled by some kind of force and instantly returned to their original shape.

Pang Xuelin slowly floated to the porthole, Saturn had disappeared, and in the distance, a giant red star was emitting a warm light.

According to the records of the shrimp civilization, this red giant star is probably the galaxy they hid after escaping from their parent star, and it was here that they discovered the entrance to the wormhole leading to the solar system.

This galaxy is almost 300 light-years away from the solar system.

Pang Xuelin checked the time again, from the time they entered the wormhole to the time they came out, less than five minutes had passed.

The distance of three hundred light years, in the four-dimensional space, only took less than five minutes.

And there are no relativistic effects.

If the basic physical parameters of this world are consistent with the real world, then in the real world in the future, the best way for human beings to travel between stars is to use this four-dimensional wormhole for long-distance crossing.

At this time, Sophon floated over from behind him and said, "Honey, there is an aircraft flying towards our location 20 million kilometers away."

Pang Xuelin was slightly taken aback, and said, "Is the shrimp people civilized?"

Sophon shook his head and said, "Probably not."

While talking, the two-dimensional screen unfolded, and Pang Xuelin saw a picture of a soft creature similar to a starfish.

Pang Xuelin frowned and said, "How is the wormhole now?"

Sophon said: "Maybe we have caused interference to the wormhole just now. The wormhole is very unstable at present. Even if our lifeboat wants to go back, it is very difficult. The other party is unlikely to allow large warships to go to the solar system through this wormhole."

Pang Xuelin nodded, pondered for a moment, and said, "Then let's go too!"

As he spoke, he waved his hand and took Sophon back into the system space.

Afterwards, Pang Xuelin said: "System, prepare to return!"

"clear!"

The next moment, Pang Xuelin opened his eyes and found that he had returned to the teacher's apartment of Jiang University.

It was still dark outside. Looking at the time, it was three thirty in the morning.

There is no systematic lottery for task rewards in this world, and Pang Xuelin doesn't have to stay in the system space for a while.

As soon as Pang Xuelin turned his head, he saw a bottle of blue liquid on his bedside table, with four words written on the bottle: genetic medicine.

At the same time, Pang Xuelin felt that in the system interface, the worlds he had traveled through before lit up one by one, and he could choose one of the worlds to return to at any time.

Pang Xuelin thought for a while, and put this matter aside, he wanted to try the effect of the genetic medicine.

Pang Xuelin waved his hand, and Sophon appeared in his room.

Pang Xuelin said: "Sophon, I want to use the genetic medicine, you can help me watch, if there is any problem, call 120 immediately."

"clear!"

Tomoko smiled sweetly.

Pang Xuelin picked up the genetic potion and smelled it, then took a sip, almost like a drink.

Pang Xuelin poured it down in one gulp, and in the next second, Pang Xuelin felt his eyes go dark, and he fell headfirst on the bed.

When Pang Xuelin woke up again, he found that he was lying on the bed with Hong Guoguo, the sheets and quilts had been changed, and Tomoko was sitting on the head of the bed.