Chapter 302: The essence of science

Xu Mang didn't know what the professor's research team was researching. Since he was allowed to guide him, he would guide him. Anyway, he would not be responsible for anything.
Came to a laboratory,
Xu Mang saw a dozen students present, including men and women.
"Ahem!"
"I want to introduce you to everyone!" The professor coughed slightly and said to the students present: "This is a top theoretical physicist in China, a professor in the physics department of Fuda, and he is also a student."
what?
It's a student, a professor of physics, and a theoretical physicist...Who is he?
"Xu Mang!"
"You should know each other?" The professor said: "Two SCI papers in Zone 1 are both "Nature". Recently Xu Mang has two more papers to be published in "NaturePhysics", and both papers are about black holes. "
"You have earned it today. Ask any questions quickly and he will stay for half a day." The professor said with a smile, "It's better to ask him to death!"
Damn it!
It turned out to be Xu Mang Xu Great God!
The students present were shocked when they heard what the professor said.
Xu Mang,
The new generation of top scholars has almost monopolized all topics in colleges and universities on their own.
"Hello everyone!"
"My name is Xu Mang... I didn't bring any gifts when I first met. I have a treat for dinner in the evening!" Xu Mang said with a smile.
dinner,
It is the fastest way to draw in the emotions between people. Xu Mang has always believed in this principle.
as predicted,
Xu Mang's status rose rapidly, almost on par with the professor.
"professor?"
"What are you researching?" Xu Mang asked curiously, "Some people are simulating black hole collisions, and some people are calculating and don't know what the is it."
"Ok!"
"At present, we have two research directions to simulate the physical phenomena after the collision of two black holes. The second one is what their students thought out after class. When the light approaches the black hole, is there a situation where the light is not sucked in? "The professor said.
"Oh..."
"I seem to have heard the first one. Are you demonstrating gravitational waves in general relativity?" Xu Mang asked: "I heard that gravitational wave detectors have been established abroad. Does our country have any plans in this regard?"
"Have!"
"The gravitational wave research team composed of NTU, National Taiwan University, Peking University, Jiaotong University, Academy of Sciences, etc., plus various scientific research units, explores the gravitational waves of general relativity," said the professor.
Xu Mang was stunned for a moment, and asked curiously: "Where are we going?"
"..."
"You... lack research discourse power in astrophysics, so this research project didn't count you in the future." The professor said helplessly.
This...
So cheating?
Xu Mang was quite unconvinced, so why is it not counted here?
"Then we Fuda will do it ourselves!" Xu Mang said with a dissatisfaction: "After the professor, we will be competitors."
"..."
"Your kid... is it necessary?" the professor said helplessly: "By the way, you don't have the relevant equipment, how do you explore gravitational waves?"
Yeah!
No equipment.
So 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 smile on his face and couldn't help but asked curiously.
"No..."
"Nothing." Xu Mang shrank his head and asked: "Professor...how much does a gravitational wave detector cost?"
"Forget it."
"You don't have the strength and financial resources." The professor said seriously: "Do your research and don't think about unrealistic things."
"Oh..."
"Then start working!"
quickly,
Xu Mang, who was in the working state, stood behind a few students and watched them simulating a black hole. It seemed that the computer technology was not enough and his movements were very slow.
Ugh...
That's horrible.
I will pack you up later!
"Ahem!"
"Who is studying the problem of light and black holes?" Xu Mang coughed lightly, walked to a blackboard, and shouted: "Ms. Xu has started class. If you want to understand the problem of light and black holes, quickly get paper and pen. Sit down!"
Words fall,
There are 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 a matter of light, it almost includes the light not being absorbed. In the situation."
Xu Mang wrote a professional vocabulary on the blackboard—internal stable state orbit.
"First of all, there can be no absolute vacuum around the black hole. There will always be some gas. When these gases fall into the black hole, they will be converted into the kinetic energy of the gas by the gravitational potential energy, which will increase the temperature of the gas."
"High-temperature gas will emit light. You should know all this? Very basic things." Xu Mang asked.
Several people nodded, expressing understanding.
after that,
Xu Mang also said: "I just studied the most stable orbit of the black hole's radiation zone not long ago. Not far from the black hole's event horizon, there is a relatively stable and long-running orbit."
Xu Mang drew a relatively simple two-dimensional model.
"This is the mass-stable orbit space model of the Roentgen ray periodic oscillation signal. In the figure, we can see that the matter that produces the Roentgen ray has a stable orbit value in the innermost part of the black hole."
"Since the black hole has the innermost stable orbit, we will go back and think about the photon and black hole."
Xu Mang was about to continue speaking, but was interrupted by a curious student.
"Xu Dashen!"
"Does the photon enter the innermost stable orbit of the black hole and it will be infinitely surrounded, can we see it?" the student asked.
"It's not infinitely surrounding, 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 solemnly: "But these escaped photons, we cannot be observed either. It’s impossible with current technology."
"in conclusion."
"In the innermost stable orbit of a black hole, photons may be surrounded, but matter will affect the photons, which will cause interference. At this time, the photons have two choices, escape from the black hole or enter the black hole. We can't observe the photons that enter, and the photons that continue to stay in the innermost stable orbit."
Xu Mang paused and asked seriously, "Do you understand?"
"..."
"..."
"..."
I understand,
But why do you feel a little sad?
Has IQ been crushed?
Xu Mang glanced at several students and asked with a smile, "Is there anything else I need to ask? Any question is fine, and I can answer it for you."
Listen!
Is this human?
Mad.
Although several students were very angry, their mouths were very honest. One of them raised his hand and asked: "Xu Dashen, will all matter in the universe be swallowed by black holes?"
"..."
"Classmate, this question..." Xu Mang said helplessly: "You know that every galaxy in the universe contains one or two, even three super-large black holes. Have those galaxies been swallowed up?"
"The evolution of galaxies and the growth of black holes are coordinated with each other. In addition, if matter is to be swallowed by black holes, the angular momentum must first be extremely small." Xu Mang paused: "That is to say, you have to free fall into the black hole. Row."
"Unless...the entire universe stops all physical phenomena." Xu Mang said, "Of course...impossible."
"next!"
Words fall,
Another student asked a question.
"Xu Dashen... can you explain why the spacecraft passed the black hole in the movie and was able to accelerate?" the student asked.
"..."
"Hawking radiation should be known?" Xu Mang asked.
Several people present nodded.
"General black holes, also known as Kerr-Newman black holes, have spins. 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. The energy of a particle will become larger, the larger energy will run out of the energy horizon, and the smaller energy will enter the energy horizon."
"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: "In fact, there are negative energy particles in the energy layer, which are inverted from the black hole and fall into the black hole. Because the rotational angular momentum is conserved, a higher-energy particle and a slower rotating black hole are ejected. "
"Do you understand?"
"Energy comes from the rotation energy of the black hole!" Xu Mang said: "So why do some science fiction movie spacecraft speed up when passing over the black hole? This is to extract the rotation energy of the black hole."
"next!"
at the same time,
The professor standing by the side felt a little bad. It was not because Xu Mang’s explanation was not vivid enough. The problem was that he gave a simple and 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...
How to do?
The current situation is completely contrary to the professor's original intention. Originally, he planned to use Xu Mang as a free labor force to allow students to increase their learning enthusiasm and knowledge inventory, but the real situation is that the knowledge inventory has increased and the learning enthusiasm has decreased a lot.
No, no!
You can't keep asking, otherwise these students will withdraw from the research group.
"Alright, alright... let's stop here." The professor hurriedly stopped the questioning session, and said to Xu Mang: "Xu Mang...Would you like to guide the black hole collision model?"
"Your modeling skills are very strong, you can see from the paper." The professor said seriously: "How about... instruct them?"
"Oh..."
"That's right." Xu Mang said: "Don't study the problem of light and black holes, it's meaningless."
"do not worry."
"This is just the students' extracurricular research. Our main goal is to explore the existence of gravitational waves," the professor said.
Immediately after,
Xu Mang stood behind a student and watched as he was tinkering with the computer.
After watching for a few minutes, Xu Mang came behind another classmate, and after watching for a few minutes, he came behind the third classmate, and finally Xu Mang chose to ignore it.
Heartache!
If the guess is correct, this collision model is based on the gravitational wave of general relativity, which is proven.
however...
What Xu Mang saw were conservative, rigid, and unaware model experiments.
how to say,
Although these people are great, they are not suitable for astrophysics research.
Boldly conceive~EbookFREE.me~ carefully verify,
This is scientific research!
at this time,
Xu Mang is thinking about a problem. He plans to do a big one. Based on his daily death in front of Xiaoman, he has realized the true meaning of life. Then can he use this principle to let these students realize the true meaning of science?
Then...
Let them truly despair once, and only when they feel despair can they be reborn in Nirvana!
Thought of this,
Xu Mang found the professor.
"professor!"
"You don't have a heart attack?" Xu Mang asked sincerely.
......