I Don’t Want to Win Lying Down

Xu Mang didn't know what the professor's research team was researching. Since he asked him to guide him, he should guide him. He was not responsible for anything that happened anyway.

to a laboratory,

Xu Mang saw a dozen or so students present, both male and female.

Ahem!

Let me introduce you! The professor coughed lightly, and said to the students present, This is a top theoretical physicist in China, a professor of physics at Fuda University, and he is also a student.

What?

Another student, another physics professor, and a theoretical physicist... Who the hell is he?

Xu Mang!

You guys should know each other, right? said the professor, There are two SCI Zone 1 papers, and both are Nature. Recently, Xu Mang has two papers to be published in Nature Physics, and both papers are about black holes. .”

You've earned money today. If you have any questions, hurry up and ask him, he will stay for half a day. The professor said with a smile, It's best to ask him to death!

Fuck!

It turned out to be Xu Mang, Great God Xu!

The students present were shocked when they heard the professor's words.

Xu Mang,

The new generation of top academic gods almost monopolize all the topics in colleges and universities by themselves.

Hello everyone!

My name is Xu Mang... I didn't bring any presents when we met for the first time. I'll treat you to dinner tonight! Xu Mang said with a smile.

dinner,

It is the fastest way to draw in the emotions between people, and Xu Mang has always believed in this principle.

as expected,

Xu Mang's status rose rapidly, almost on an equal footing with the professor.

professor?

By the way, what are you studying? Xu Mang asked curiously: Some people are simulating black hole collisions,

Some people are calculating what the hell.

Um!

At present, we have two research directions, simulating the physical phenomenon after the collision of two black holes. The second is that their students came up with it after class. When light is close to the black hole, is there a situation that it will not be sucked in. said the professor.

oh...

I seem to have heard of the first one. Are you demonstrating the gravitational waves of general relativity? Xu Mang asked, I heard that gravitational wave detectors have been established abroad. Does our country have any plans for this?

have!

The gravitational wave research team composed of six universities including Nanjing University, Tsinghua University, Peking University, Jiaotong University, Academy of Sciences, etc., plus various scientific research institutes, is exploring the gravitational waves of general relativity, said the professor.

Xu Mang was stunned for a moment, and asked curiously, How about we re-university?

...

You... lack the right to speak in research in astrophysics, so this research project does not include your fuda. The professor said helplessly.

this...

So cheating?

Xu Mang was quite unconvinced. Why isn't Fuda counted here?

Then let's do it ourselves! Xu Mang said with dissatisfaction, Professor, we will be competitors from now on.

...

You kid...is it necessary? The professor said helplessly: You don't have the relevant equipment, how can you explore gravitational waves?

Yes!

There is no equipment.

How embarrassing... this equipment is not cheap.

At this time, Xiaoman's figure appeared in Xu Mang's mind. She was holding a sign that said'I have the ability to make money'.

What are you laughing at? The professor looked at Xu Mang with a wicked smile, and asked curiously.

without...

It's nothing. Xu Mang shrank his head and asked, Professor... how much does the gravitational wave detector cost?

Forget it.

You don't have the strength and financial resources. The professor said seriously: Do your research well and don't think about those unrealistic things.

oh...

Then get to work!

soon,

Xu Mang, who had entered the working state, stood behind several students and watched them simulate a black hole. It seemed that the movements were very slow because of insufficient computer technology.

well...

It's too awful.

I'll clean you up later!

Ahem!

Who are studying the problem of light and black holes? Xu Mang coughed lightly, walked to a blackboard, and shouted, Ms. Xu has started class, and if you want to understand the problem of light and black holes, hurry up and get a pen and paper. Sit down!

words fall,

There were five or six students sitting in front of Xu Mang.

Just a few of you? Xu Mang took a look and began to teach these students: Your research happens to be the content of one of my papers. Although the scope of the research is not about the problem of light, it almost includes the problem of not being absorbed by light. Going in.

Xu Mang wrote down a professional vocabulary on the blackboard - homeostasis orbit.

First of all, there cannot be an absolute vacuum around the black hole. There will always be some gas. After the gas falls into the black hole, the gravitational potential energy will be converted into the kinetic energy of the gas, thereby increasing the temperature of the gas.

High-temperature gas will emit light. You should know all of this, right? It's very basic. Xu Mang asked.

Several people nodded to express their understanding.

after,

Xu Mang added: Not long ago, I just studied the most stable orbit in the radiation region of the black hole. Not far from the event horizon event of the black hole, there is a relatively stable and long-running orbit.

Xu Mang drew a relatively simple two-dimensional model.

This is the mass-stable orbital space model of the periodic oscillation signal of Roentgen rays. In the figure, we can see the material that produces Roentgen rays, and the stable orbital value in the innermost part of the black hole.

Since the black hole has the innermost stable orbit, let's go back and think about the problem of photons and black holes.

Xu Mang was about to continue talking when he was interrupted by a curious student.

Master Xu!

Is it true that when a photon enters the innermost stable orbit of a black hole, it will be infinitely circled, so can we see it? the student asked.

It's not an infinite circle, because the matter around the black hole will interfere with the photons. Once the interference either falls into the black hole, or escapes from the black hole. Xu Mang said seriously: But these escaping photons cannot be observed by us. , which cannot be done with current technology.”

in conclusion.

In the innermost stable orbit of the black hole, the photon may be surrounded, but the matter will affect the photon, resulting in an interference phenomenon. At this time, the photon has two choices, escape from the black hole or enter the black hole, but no matter the escaped photon, it will fall The photons that go in, the photons that continue to stay in the innermost stable orbit, we cannot observe.

Xu Mang paused for a moment, and asked seriously, Do you understand?

...

...

...

I understand, I understand.

But why feel a little sad?

Has IQ been crushed?

Xu Mang glanced at the students, and asked with a smile, Is there anything else I need to ask? You can answer any questions, and I can answer them for you.

listen!

Is this human?

Mad.

Although several students were very angry, their mouths were very honest. One of the students raised his hand and asked, Master Xu, will all the matter in the universe be swallowed by black holes?

...

Student, your question... Xu Mang said helplessly, Do you know that there are one to two, or even three, supermassive black holes in every galaxy in the universe. Have those galaxies been swallowed up?

The evolution of galaxies and the growth of black holes are coordinated with each other. In addition, in order for matter to be swallowed by black holes, the angular momentum must first be extremely small. Xu Mang paused for a while: That means you have to fall freely into the black hole to get rid of it. OK.

Unless...the entire universe stops all physical phenomena. Xu Mang said, Of course...impossible.

Next!

words fall,

Another student asked a question.

Master Xu...can you explain why the spaceship speeds up when it flies past the black hole in the movie? the student asked.

...

You should know about Hawking radiation, right? Xu Mang asked.

Several people present nodded.

General black holes, that is, Kerr-Newman black holes, have spin. This kind of black hole has an energy layer. One particle falls into the energy layer and becomes two. One particle energy becomes negative energy. In addition, The energy of a particle will become larger, the one with higher energy will run out of the energy layer, and the one with lower energy will enter the energy layer.”

After all, energy is always conserved, so where does this energy come from? Xu Mang asked, Who can answer?

...

...

...

Several people shook their heads.

Xu Mang smiled bitterly: Actually, there are negative energy particles in the ergosphere, which are reversed from the black hole and fall into the black hole. Because of the conservation of rotational angular momentum, a higher energy particle and a slower rotating black hole are ejected.

Do you understand?

The energy comes from the rotational energy of the black hole! Xu Mang said, That's why the spaceships in some sci-fi movies speed up as they pass by the black hole. This is to extract the rotational energy of the black hole.

Next!

at the same time,

The professor standing next to him felt something was wrong. It wasn't because Xu Mang's explanation was not vivid enough. The problem was that he gave an easy-to-understand description of the doubts raised by the students. Although he could quickly understand the mystery, However...the students are all autistic.

this...

what to do?

The current situation is completely contrary to the original intention of the professor. He originally planned to use Xu Mang as a free labor force to increase the students' enthusiasm for learning and the stock of knowledge, but the real situation is that the stock of knowledge has increased and the enthusiasm for learning has dropped a lot.

No no no!

Can't continue to ask, otherwise these students will quit the research group.

Okay, okay...let's stop here. The professor hurriedly stopped the questioning session, and said to Xu Mang, Xu Mang...would you like to guide me on the black hole collision model?

Your modeling skills are very strong, as you can see from the paper. The professor said seriously: How about...guiding them?

oh...

That's right. Xu Mang said, Don't study the issue of light and black holes, it's meaningless.

Don't worry.

This is just an after-school research for students, and our main goal is to explore the existence of gravitational waves, said the professor.

Immediately afterwards,

Xu Mang stood behind a student, watching him tinkering with the computer.

After watching for a few minutes, Xu Mang came behind another classmate. After watching for a few more minutes, he came behind the third classmate. Finally, Xu Mang chose to ignore it.

Heartache!

If the guess is correct, this collision model is based on the gravitational waves of the general theory of relativity, as proven cases.

However...

What Xu Mang saw was a conservative, rigid, and inflexible model experiment.

how to say,

These are great people, but not for astrophysics.

imagine boldly,

Carefully ask for proof,

This is scientific research!

at this time,

Xu Mang was thinking about a question. He planned to do a big one. Based on the fact that he died in front of Xiaoman every day, he realized the true meaning of life. So can he use this principle to let these students realize the true meaning of science?

then...

Let them really despair once, only when they feel despair can they be reborn from nirvana!

Thinking of this,

Xu Mang found the professor.

professor!

You don't have a heart attack, do you? Xu Mang asked sincerely.

 …