Su Mei was listening carefully, but no matter how careful the girl was, she still couldn't figure it out.

Why is this behavior called the Light Tomb?

Isn’t it just a spacecraft that uses light speed to circle the earth and even the solar system? Why did it become a light tomb?

But Lu Yuan understood Su Mei's expression.

“This involves the theory assumed in that science fiction story.”

"First of all, we must first understand that the light-speed spacecraft. The light-speed spacecraft here is not like a rocket. We provide it with an acceleration, continuous acceleration, continuous acceleration, and ultimately accelerate to the speed of light."

"The light-speed spacecraft here uses a curvature engine, which will be very troublesome to explain. However, in metaphor, it is probably that you make the surrounding space and space move together with the spacecraft, not that you run on the earth, but that the earth itself becomes a light-speed conveyor belt, such a pattern."

Lu Yuan looked at Su Mei's expression that he had half understood, and could only shrugged: "Don't look at me, you can ask the Transportation Commission for details. This is the ultimate language ability, and please give up. We can't build such a curvature spacecraft, but I guess it can't build it until I die, although it is theoretically possible."

"Just like water?" Su Mei looked at Lu Yuan's desperate explanation expression and carefully expressed her opinion: "For example, if the density of the water flow ahead is small and the density of the water flow behind is large, the boat in the water will be automatically pushed forward by the water flow."

"And the so-called curvature spacecraft is to find a way to reduce the density of space-time ahead, so that it can be pushed forward by the power of space-time?" said the girl.

Lu Yuan hugged Su Mei excitedly at that moment. When the girl was struggling in Lu Yuan's arms, Lu Yuan realized that she couldn't help herself.

Yes, you can really use the words "Mr. Lu" now, please pay attention to what you are doing now.

After all, the two of them actually sleep on a big bed, with only two layers of quilts separated by the middle.

It has reached the point where you say nothing else will never listen to it.

Now let the way far away and explain to others that he and Su Mei slept in the same bed for almost half a month and nothing happened.

Then the long road will only evaluate whether the victim is good or not.

Lu Yuan let go of his hand.

Su Mei's face was so blushed.

But the moment I was hugged was not particularly annoying.

Just a little unaccustomed to it.

But Su Mei knew why Lu Yuan suddenly hugged her.

"I'm right, right?" Su Mei asked.

Lu Yuan nodded affirmatively: "Yes, this is the principle of the curvature spacecraft, but knowing the principle is very simple. However, how to reduce the density of space-time in front is probably the biggest problem with the curvature engine. Although my research field is also in science, I don't know the details of this aspect at all."

"But let's get back to the point."

"Because of the nature of a curvature spacecraft, when the curvature spacecraft runs, it will cause time and space interference, leaving traces that are very easy to sense. Therefore, in science fiction stories, every time this kind of spacecraft starts, it must first leave its home star far away before it can be started and fly."

"But the curvature spacecraft will also affect the speed of light because of the interference of space-time."

"According to Einstein's theory of relativity, light is the fastest speed in the world, and the speed of light remains constant."

"But with the use of the curvature spacecraft, the speed of light will change, and specifically, it will slow down."

"As the curvature spacecraft continues to fly around the earth, and its movement trajectory completely wraps the earth, it will form a light tomb around the earth, that is, once the light enters, it will never escape."

"At that time, the speed of light on the earth will be reduced to a very low speed. We know that the speed of light is about 300,000 meters per second. In that case, although I can't remember it clearly, this speed should be only a few hundred meters per second, or even less."

After Lu Yuan said so many things or not, he looked at Su Mei: "Do you know what this means?"

Su Mei really wants to say that you are the same as the four ways of writing fennel beans. How do I know what you mean?

But Su Mei felt something understand at that moment.

After all, Su Mei seems to have taken both psychology and law, but in fact, she is a great science student.

"The speed of light cannot be surpassed, right?" the girl said.

Lu Yuan gently patted Su Mei's head to express his praise.

"Yes, when the speed of light drops below the first cosmic speed, it means that light cannot escape the gravity of the earth."

"Of course, at this time, all the people on earth can no longer escape from the earth."

"This is equivalent to creating a cage to imprison myself, and at the cost of declaring me harmless to everyone, I will never go out of my own planet, and gaining the ignorance of others."

"Similarly, any weapon used on your planet will be protected by this light tomb, because under the premise of slow light speed, all attacks will appear very powerless, especially most cosmic ultra-long-range attack methods that use the speed of light as the standard."

"At the cost, human life will be very dull and will have a lot of troubles at slow speed of light, but compared to being able to survive in the universe, many people feel that it is worth it."

Lu Yuan said this.

"This is also a cage where you can never see the stars." The boy concluded.

"I don't want such a future." Su Mei said simply.

Yes, I don't want such a future, although essentially this is no different from those ridiculously retarded people, it is the ability to castrate oneself, and like a potential enemy, it shows that such an oneself is harmless.

Just like the eunuchs in the palace who proved themselves harmless.

And such castration can never be lifted.

This way, I can really survive.

But I really don't want it.

Don't want it, don't want it at all.

"So, what about the ending?" Su Mei still wanted to know.

Actually, most of the time today, the road is far away and telling stories one-sidedly.

But Su Mei is really.

I like this story very much.

"Is it the ending?" Lu Yuan looked at Su Mei.

"The ending is very simple." The boy looked at the darkness: "All human beings were destroyed."

"Why?" Su Mei asked.

Although in the future we see, human beings are almost completely destroyed because of the extinction of the sun.

But why does this happen?

At least the humans inside are much more powerful than in reality.

It is so powerful that it can create curvature spacecraft, and so powerful that it can conduct interstellar navigation.

These are things that humans cannot do.

Humans today.

"The reason is also very simple." Lu Yuan looked at Su Mei.

"Because I created a light tomb that proves that I am safe and harmless."
Chapter completed!