Xu Mang is not afraid of being barred, he is also a bar, and he is also a bar, and the object of his bar is his fiancée, others just use the keyboard to use the online bar, and Xu Mang is standing on the verge of death with the witch.

"Panic!" Xu Mang said with a smile: "Anyway, I'm in the physics department of Fudan University, they can come and confront me." ”

“...”

"You're not afraid of death. Brother Chuan Xiao said helplessly: "Forget the appearance of being devastated by online violence before? And this time it is on a global scale, plus you are a scientific research worker, in case of intimidation, your reputation will be damaged." ”

Xu Mang said indifferently: "It doesn't matter. ”

Brother Chuan Xiao glanced at Xu Mang: "It's worth it to live like you, you should eat, drink, and don't put anything in your heart." ”

"Wait a minute!"

"Isn't this a special manifestation of heartlessness?" Xu Mang said angrily: "I'm very upset about money now, don't look at the gravitational wave detection laboratory is no longer stressed, but this private research institute is still waiting for a lot of money, and no one has come to donate fundraising." ”

"You say..."

"Many foreign private research universities have so many donations, why don't they donate to me?" Xu Mang sighed: "It's too miserable... If we continue like this, we are probably going to end it, is it that we have chosen the wrong mode? Crossing the river with Eagle Sauce, touching the wrong place?"

Faced with this problem,

Brother Chuan Xiao, an Internet expert, didn't know how to answer Xu Mang, and said silently: "There are indeed some difficulties in the early stage, but it's good to get through it, after all, your news has not been made public." ”

Also

At present, others only know about the gravitational wave detection laboratory, but they don't know that there is a private research institute next to it.

But...

I guess some people are starting to stir again.

By noon,

Yang Xiaoman drove his own car and delivered lunch to Xu Mang and Sun Chuanxiao, five dishes, one soup, three meat and two vegetables, which were extremely standard and reasonable, but in front of outsiders, Yang Xiaoman was ashamed to buy it outside and say that it was made by himself.

"it!"

"It's... This is..."Brother Chuan Xiao said with a frightened face: "Xu Mang... What did you do in your last life? When you meet a woman like Yang Xiaoman in this life, the food cooked by my mother-in-law is unpalatable, I really don't know, I am shocked. ”

Yang Xiaoman was almost embarrassed to be praised, and Xu Mang was almost embarrassed to hear it.

soon

Xiao Man cleaned up the table, left the office with a bunch of lunch boxes, looking at the back of the departure, Xu Mang didn't know what to say for a while, she gradually leaned towards the image of Mrs. Xu.

Afternoon

Xu Mang and Brother Chuan Xiao still conducted a series of explorations and discussions on this black hole, and the current question is about how to make the audience distinguish, outside the event horizon of the black hole and in the event horizon, according to Xu Mang's idea, add a visible band of light at the edge of the horizon.

However, this idea was rejected by Brother Chuan Xiao, judging by the real photo of a black hole, there is no so-called bright band.

To get to the bottom of this,

Xu Mang and Chuan Xiao carried out a lot of research work, and finally figured out the basic situation of the bright band, the black hole above the photo, its accretion disk is physically very thick, but optically very thin, and the radiation can basically pass through unhindered.

Then when designing the black hole in the movie, you can take the opposite structure, the accretion disk is physically very thin, but optically very thick, and the radiation cannot pass through it, so this problem is solved.

Of course

A lot of everything is just in the mind and in the computer, and it needs real examples for reference, a black hole with a mass equivalent to 100 million times the sun.

Xu Mang and Chuan Xiao's eyes were on M31, the Andromeda galaxy about 2.54 million light-years away from Earth.

According to astronomers, there is a supermassive black hole in the middle of the Andromeda Galaxy, with a mass of 100 million times the mass of the sun, which basically meets the requirements in the movie, but this is only in terms of quality.

The data study of this large black hole in Andromeda finally determined the type of black hole in the movie, in short, it was moved unchanged.

"Brother Chuanxiao?"

"Since black holes are capable of influencing time, then... If a person stands on the edge of a black hole for a year, how will he calculate the time after he returns to Earth?" Xu Mang asked with a grin.

“...”

"This... I really don't know, maybe the galaxy is gone. Brother Chuan Xiao smiled.

"Actually, this script is pretty good. ”

"I guess I found a scientist to be a scientific advisor. Xu Mang said seriously: "The universe is divided into two independent time and space, outside the horizon and in the horizon, I have no objection to this. ”

"And when you're close to beyond the horizon, there's no need to doubt it... It must be slower than in Earth time, and how much slower it depends on the screenwriter's own ability to make up. Xu Mang said seriously: "However, the time inside the black hole, this scientific consultant has a problem with his fantasy ability, and he should not use the time dilation effect, but the time visualization effect." ”

Visible effects?

This...

Is there a concept?

Brother Chuan Xiao looked confused, it was the first time he had heard of this time visual effect.

Followed by

Brother Chuan Xiao heard the most absurd thing in life, in the black hole of Xu Mang's fantasy, time can be observed, that is, the past, present and future can be seen, and even gravity can be used to change the future.

According to Xu Mang's meaning, anyway, everyone can't understand the definition of black hole time, so they go directly to the bold assumption.

However, according to the general theory of relativity, a time is chosen inside the black hole to enter, and this time can only be the corresponding time point after entering the event horizon, which is to prevent the grandmother paradox.

So as not to let the timing go wrong.

"Xu Mang?"

"Yes!" Brother Chuan Xiao smiled: "Your sci-fi ability is very strong!"

Xu Mang smiled and said indifferently: "Actually, it's all nonsense, you and I both know that entering a black hole is only one death, so it's better for us to imagine the inside of this black hole a little more wonderful." ”

"So how do you get around?"

“...”

Xu Mang's burning soul of pretending to be forced just now was extinguished by Brother Chuan Xiao in a moment.

"It's all come to this... Just forcibly press a wormhole, it's a science fiction movie anyway... The screenwriter will try his best to rationalize. Xu Mang smiled: "And I looked at the previous plot, which also involves using wormholes to travel through time and space." ”

Furthermore, Einstein defined it as instantaneous space transfer or time travel. Xu Mang said seriously: "This matter doesn't need to be discussed, listen to me!"

Brother Chuan Xiao was stunned for a moment, and asked curiously, "Have you been watching "Boss Huang's Restaurant" recently?"

"How do you know?" Xu Mang was stunned for a moment: "Xiao Man has been crazy lately... I was forced to watch with her. ”

"My wife is too, so I also accompany it. ”

“...”

“...”

is the same person who has fallen to the end of the world, why should we have known each other when we meet.

Miserable!

Regarding this black hole problem, the two solved half of it, and the rest didn't seem to be a big problem, but at this time, it was already half past four in the afternoon, and the two cleaned up and prepared to go home for dinner.

"Xu Mang..."

"You're much happier than I am. Brother Chuan Xiao sighed, and complained to Xu Mang: "I can only eat egg fried rice made by my wife when I go home, I have been eating it for almost several years, and she doesn't even change her tricks, and you... But it's a hot meal. ”

Looking at the back of Brother Chuan Xiao's departure, Xu Mang's heart was mixed, brother... Egg fried rice is at least hot!

Fuda,

Teachers' apartments.

Xu Mang sat at the dining table, looked at the two sandwiches with only lettuce on the plate, and a glass of freshly squeezed orange juice on the side, and stretched out his hand to touch the sandwich... Hot!

Looking up at the pile of vegetable and fruit salad in Xiao Man's bowl, I felt that this kind of life was familiar, could it be that my mother was back?

"Don't look at me..."

"This is all commanded by my mother-in-law. Yang Xiaoman knew what Xu Mang wanted to say, and said helplessly: "Mother-in-law called me a few days ago and asked me to pay attention to your healthy diet, eat more vegetables and fruits, and eat as little meat as possible." ”

Words fall,

Yang Xiaoman turned on his mobile phone and put back what Xu's mother said on WeChat.

"Xiao Manna, you and Xu Mang usually eat more vegetables and fruits, eat less takeaway, vegetables are good for your health, and you must put less salt, and try to use extra virgin olive oil for oil, and your mother will send you two health articles later, you read them carefully." ”

At this point,

Xu Mang and Xiao Man didn't speak, sitting quietly at the dining table, looking at each other.

"Are you going to eat hot pot?" Xu Mang suggested, "Choose the bottom of the spicy butter pot." ”

"Let's go!"

...

Following

After Xu Mang finished teaching the students, he came to the Modu Observatory and began to ponder the black hole in more detail, such as simulating the basic structure of the black hole, and observing the black hole from a certain perspective, whether the star source in the cosmic background exists, etc.

Until three o'clock in the afternoon,

The two basically solved all the problems of black holes, among which Xu Mang knew the concept of the so-called five-dimensional space, which, in Randall's words, is a four-dimensional supercube, and from a geometric point of view, it is the representation of a cube in a three-dimensional world in a four-dimensional world, just like a cube relative to a square.

In the five dimensions, we can see the different life trajectories of a person, but superimposed together, projected in a mental space, the probability wave collapses into a specific state, that is, a certain kind of his life experience.

This is exactly the same as the inside of a black hole that Xu Mang imagined.

After that, Xu Mang sent the plan to Nolan's younger brother.

meanwhile

New York

The second half of the night.

Jonathan Nolan, the younger brother of the great director Nolan, is revising his own movie script, he and his brother are working on a movie together, and as the screenwriter of this movie, he is the most serious one.

With his brother's pursuit of truth, Jonathan Nolan invited two fairly well-known experts as scientific advisors to co-create the script for the film, and so far everything is good, but... There are some details that need to be revised.

Especially with black holes.

His brother felt that this was not shocking enough, and finally reluctantly contacted the authority in the field of black holes, Professor Xu Mangxu to solve this problem, of course... It was not known to the two scientific advisors.

Then

Jonathan Nolan noticed an email coming from his mailbox, and clicked on it to see that it was from Xu Mang.

"This..."

"So fast?!" Jonathan Nolan looked at the content, and was suddenly a little surprised, it took the two scientific advisors a week at the beginning, but Xu Mang took less than two days, is there a quality problem?

......