Chapter 569

Of course, Xu mang knows what these people are doing. He just wants to see the strength of these people. Let alone... It's really not so good. It's full of a row of formulas, but in the end it's empty.

It doesn't seem to go on.

"What you don't understand..."

"it's a matter of relativistic cosmology." Tong Min said with a smile, "have you helped me spread cumin?"

"That's necessary!"

"The soul of barbecue is cumin and iced fat water." Xu mang said with a smile: "wait a moment... Help you get some bottles of fat boy happy water. Do you need sugar happy water or sugar free happy water?"

"..."

"..."

"

this guy is very humorous, and he is very popular with women.

"Zero coke!"

"I want it too!"

Two returned girls said to Xu mang with a smile.

However...

this caused a little alertness of Yang Xiaoman. I was sitting on the side, and this big idiot was courteous to others. What do you mean?

"Cough!"

"It's hot... I'm thirsty." Yang Xiaoman coughed gently and said to Xu mang intentionally or unintentionally, "I want to drink zero coke... I don't know who is willing to help me take it."

Xu mang walks to Xiaoman and glances at Yang Xiaoman with a trace of expectation. He says angrily, "the cold box is on your side. You don't want to take it even if you bend over. Tell me about yourself... Lazy or not?"

Yang Xiaoman: @ ා￥%!

I was...

ouch,

pissed off!

However, Xu Mang's mouth is not forgiving, but his body is particularly honest. He picked out a bottle of not very cold cola among many cold drinks, handed it to Yang Xiaoman's hand, and seriously said: "drink less cold, and later it will accumulate into illness, and then you will not die of pain."

Yang Xiaoman was also kind and warm. He gave a vicious white eye, and then opened the bottle cap happily, not to mention... The temperature is just right, this is the temperature of love.

"Coming, coming!"

"Here comes the iced coke!" Xu mang ran to the four overseas students with a smile and began to distribute things seriously.

Thank you

"Thank you very much."

"..."

thanks to the four, especially the two girls. They have a good feeling for Xu mang. Sometimes, it's like Xu Mang and Yang Xiaoman. Because of the meat juice in the steamed buns, they walk together and sleep with each other every night.

Although Xu mang at this time with a hat and a pair of polarizing glasses, but from the outline, you can feel the handsome.

"Ah?"

"What's your name?" Liu Yan asked.

"Me?"

"Call me Xiao Xu." Xu mang said with a smile, "can you show me your calculation process? I like the universe very much. I'm an astronomer, so I chose the physics department and majored in theoretical physics

“？？？”

“？？？”

“？？？”

I can't see it!

Is this guy doing physics or theoretical physics!

Wait a minute,

isn't that just good?

"Xiao Xu?"

"I can't believe you're still studying theoretical physics, so you should understand relativity very well?" Tong min asked.

"Not bad."

"Let me have a look first?" Xu mang is really curious about their calculation content. If these four people do not pass the calculation, they will not be able to solve the problem of extrasolar oxygen fugacity. The oxygen fugacity of extrasolar planets needs a lot of comparative calculation, and the intensity is very high.

"Here you are

Liu Yan generously handed over all the manuscripts to Xu mang. However, Lu Bo was a little dissatisfied with this. He gave such important things as he said, but they were all his own knowledge achievements. This is too much of a joke.

However, it is too late for him to refuse. Xu mang is reading their calculation.

At first,

thought it was just a calculation problem, but it turned out that there was not only a problem in the calculation, but also a problem in the whole direction of thinking. They took the function relationship between the ability to calculate the expansion universe, momentum and time that they needed to solve, and they used the wrong formula!

Xu mang disappointed to return the manuscript to them, indifferent to say: "you... Use the wrong formula."

"This problem needs to be described in terms of Robertson Walker metric." Xu mang helplessly said: "get the non-zero component from the formula, and then use the geodesic equation to calculate, and finally get the thinking momentum and basic momentum, including energy."

The words fell,

several people present were surprised and looked at Xu Mang in disbelief."You..."

"did you analyze it so quickly?" Tong min asked in horror: "just... Just take a look at our calculation process?"

"Yes

"It's a simple question." Xu mang said with a smile: "after all, I study theoretical physics, relativity and quantum mechanics are my major, and it is not difficult to get the results."

"Here you are

Xu mang submitted this manuscript to the girl Liu Yan.

No!

This is not the case!

This theory of relativity is not the same as relativistic cosmology. If this guy is only engaged in theoretical physics, he can not be exposed to such profound problems, including Robertson Walker metric. How did he know?

Looking at the back of Xu Mang's leaving, two astrophysics students, with a confused look on their faces, feel that they have seen a monster.

"He..."

"different!"

"It's not like a normal college student." Liu Yan said seriously: "it is absolutely impossible for ordinary students to analyze the cause of the problem in such a short time. Have you ever seen such a person?"

Tong min and Lu Bo shake their heads.

"Forget it..."

"maybe it's luck." Tong Min said with a wry smile: "well... The second question the professor set us is that the early universe is composed of non interacting, zero mass particle gases, and they are only affected by gravity..."

at this time,

Xu mang walked to Xiaoman with a disappointed face and sat quietly on the chair without saying a word.

"Ah?"

"What's the matter?" Yang Xiaoman asked with concern: "originally or elated appearance, how suddenly... Wilt?"

"Alas..."

"I originally wanted to ask these four people to help me solve the problem of oxygen fugacity outside the Department, but the ability of these people is not good." Xu mang helplessly said: "the ability to calculate is urgent, there are also problems in professional ability, of course... Only limited to the two boys."

"Don't count those two girls?" Yang Xiaoman a white eye, said in a hurry: "I want to eat corn... Put some seafood sauce on it."

"Oh..."

Xu mang ran to the barbecue stove and roasted corn for the queen.

At this time,

the four people are solving the hypothesis that the temperature dependence of thermal equilibrium in the universe is time-dependent, while Professor Tong min and Lu Bo need to ask them to calculate the dependence.

It's crazy...

totally confused!

Fortunately, the four people have successfully worked out the number of photons with frequencies between V and V + DV in volume V (T) according to Planck's blackbody radiation theory when the photon gas is in thermal equilibrium at time t.

However...

because the frequency will move, the volume will expand, and how to calculate this process is basically difficult to reach the four people present.

"It's over..."

"it's completely lost." Tong min helplessly said: "I found that the professor deliberately in the whole us... This problem is too sharp."

"I feel the same way..."

"this calculation is very large. To be honest, I am a graduate student in mathematics department, and I can't even calculate it." Liu Yan said with a wry smile: "well, I said that you two have offended the professor at ordinary times, which may embarrass you?"

"Don't bullshit!"

"We are usually very honest, I think... This is the son of a bitch Professor deliberately bad, I said... Why we called the two of us to the office alone, the reason is here!" Tong Min said angrily: "this is deliberately not to let us graduate!"

"No way?"

"They... Have no grievances with you, why don't you two graduate?" Zhao pengpeng asked.

At this time,

the silent Lu Bo said: "because... This professor discriminates against Chinese people."

As a result,

the two girls stopped talking. There are a lot of discrimination in the United States, especially in the field of higher education. Many professors in famous universities discriminate against Chinese students and Asian students. Many schools prefer to recruit black and white students rather than Asian students, especially from China.

Therefore, Chinese students who want to be admitted to Ivy League schools basically have to surpass all the students in scores.

However, in this way,

is often ignored by professors.

"Alas..."

"in fact, I regret studying abroad." Liu Yan said helplessly: "I knew that I had stayed in China, but my parents didn't agree. I had to let me go abroad. I wonder... Is it so important to go abroad?"

"I remember... Professor Xu has never studied abroad, and he has not become a top scientist in the world, although..." Liu Yan thought that her professor was stamped by Xu Mang, showing a helpless and funny expression: "although infamous, they are really powerful!"Xu Mang,

Professor Xu,

indeed, his reputation in American academic circles is not very good. It is said that he specializes in murdering European and American people, but others have such strength.

"Ah?"

"Or... Ask Xiao Xu for help?" Tong Min said, "maybe Xiao Xu has this ability?"

"..."

"..."

"..."

"..."

not to mention,

there is a chance!

I don't know how that guy solved the first problem, but his strength doesn't need to be explained.

"I'll find him!"

Liu Yan has a good feeling for Xu Mangting, mainly because he is more careful and gentle to people. The most important thing is that he is very handsome. He is almost like a white cat who writes online novels. He is a good-looking guy!

Liu Yan got up in a hurry and ran to Xu Mang's side under the gaze of Yang Xiaoman.

"Hello?"

"Handsome man... Are you free?" Liu Yan asked.

"What's the matter?" Xu mang is baking corn, a confused face asked: "looking for handsome boy, I have something to do?"

"Er..."

"can you help us solve some problems?" Liu Yan said with a smile, "it's those questions about relativistic cosmology."

"Oh..."

"when I finish baking these corn." Xu Mang's mind now is all on the corn, just now... He faintly noticed a trace of murderous spirit, secretly glanced at Xiaoman, and found that her face was full of jealous words.

For a moment,

Xu handed the corn coated with seafood sauce to Xiaoman's hand, then leaned over her face and kissed her. He said gently, "I'll help some young people answer the questions."

"Well!"

"Go and come back." Yang Xiaoman said shyly.

However,

on the other hand, Liu Yan and Zhao pengpeng are very sad. It's a pity that famous grass has its own owner.

"Come on, come on!"

"Let me see if I have a problem." Xu mang came to the four with a smile and asked curiously, "what's the problem?"

"Here you are

Liu Yan hands the tablet computer to Xu mang.

For a moment,

after getting the manuscript, Xu mang read it carefully, and his eyebrows gradually twisted together.

"..."

"..."

"..."

"..."

looking at Xu Mang's expression, Tong min and Lu Bo can't help getting nervous. This guy is their last hope... Don't say no!

......

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