"Lord Hantaro Nagaoka:

"Seeing the words is like the face.

"It's been a long time since I've been in touch with the teacher, so I don't know how the teacher is doing?

"By the time you received this letter, I would have left the Institute of Theoretical Physics at the University of Copenhagen and arrived at Leiden University in Helan.

"I was thinking about whether I should change my research direction and move away from purely theoretical physics and return to experiments.

"The reason why I came up with this idea was that I met Chen Muwu, a genius in Chinese physics, at the Institute of Theoretical Physics.

"Although I am very embarrassed, I have to admit that on the road of theoretical physics research, I think I can't compare with this young Chinese man in the slightest.

"In one conversation, I asked him about the mainstream direction of the future development of physics, and unexpectedly, the answer he gave was not the theory of relativity or the atomic nucleus, which is very popular in physics today, but the superconductivity effect.

"During the chat, I carefully observed the expression and demeanor of this Chinese man, and his logic in answering questions was clear, and the examples were detailed, and I could feel that these were the results of his careful consideration, and they should not be improvised.

"So after thinking about it for a long time, I planned to go to the low-temperature physics laboratory of Helanleiden University to find out if the study of superconductivity is a way out for the future physics community.

"I think that Imperial University should also develop its own or buy a set of cryogenic refrigeration equipment from the West, and our research on low-temperature physics and superconductivity should also be established as soon as possible.

"When I get to Leiden University, I'll take a field trip to see what the cryogenic technology is there, and then I'll write a letter to you.

"If you need to purchase relevant equipment, you can ask the teacher to write a letter to inform you that the student will buy it on your behalf.

"Please advise.

"Yoshio Nishina Tribute Tool"

……

As Yoshio Nishina said in a letter to Tokyo Imperial University professor Hantaro Nagaoka, at the dance that night, he was still suspicious of Chen Muwu at first, thinking that this cunning person would not say what he wanted.

But as the conversation deepened, Yoshio Nishina felt more and more moved by the "sincerity" that Chen Muwu revealed in his words.

Especially when Chen Muwu said that as an Asian, he himself was struggling in Europe, and he was bullied everywhere, which made Yoshio Nishina feel the same way.

These Omi ghost animals are really too deceitful.

Heisenberg in Copenhagen is even one of the better of these people.

The most excessive is the Pauli I met when I was studying in Germany, he is something!

He was young, and he had no one in his sights, but he was just relying on himself to be a European.

Did he contribute anything to the development of physics?

On the other hand, Chen Muwu, who is a few years younger than Pauli, has made countless achievements in physics, but he is very humble in the world, in an idiom, that is, humble and humble.

So before the dance ended, Yoshio Nishina almost completely accepted the very pertinent advice of Chen Muwu, who was suffering from the same illness as himself.

He plans to leave Copenhagen and go to the Netherlands to see what is going on at Leiden University before making his next decision.

However, even though he has completely trusted the Chinese man in front of him, Yoshio Nishina still has not been completely honest.

After hearing Chen Muwu say that he was going to be an exchange visit at the Institute of Theoretical Physics in Copenhagen for at least two months, Yoshio Nishina made a small calculation in his heart.

If he can successfully find the superconducting properties of thallium metal in the two-month time gap, then he will be able to successfully cut off Chen Muwu's next achievement in advance!

Non-toxic is not a husband, not to mention the results of the Chinese people, and there is no burden and pressure in Renna Fangxiong's heart.

However, Chen Muwu didn't tell the truth completely with Nishina Yoshio.

Before he arrived in the UK, he had already gained a firm foothold in the European and American physics circles with two papers.

After arriving at Cambridge University, everyone loved and blossomed, not only Rutherford and Old Tomson, who guarded the calf, but also Eddington, who had always been polite and gentlemanly, beat people because of him.

Moreover, Chen Muwu's height and appearance are completely incomparable to Yoshio Renna.

If you tell him that there are many beautiful girls in Europe who have a good impression of him, I wonder if this short, round-faced little fat man will cry bitterly, break down in his heart, and even commit suicide after hearing this?

……

"Okay, Dr. Chen, you just arrived in Copenhagen, and you poached one of my students. I thought you were both Far Easterners and should have a lot in common with each other, but I didn't expect you to be so unkind to him. ”

After a few days of sightseeing in Copenhagen, Chen Muwu met his brother Bohr again in the office of the Institute of Theoretical Physics.

As soon as they met this time, Bohr gave him a "dismount".

But seeing that he still had a smile on his face, Chen Muwu could guess that what he said was mostly a joke.

"Professor Bohr, you're really good at telling jokes. I have more common topics with a pig than with a person.

"Do you have anything in common with the Germans who invaded Schleswig, Denmark?"

As soon as he finished speaking, Chen Muwu felt that this last sentence was a little out of place.

Bohr, who was sitting behind the desk, also kept signaling Chen Muwu with his eyes, not only the two of them in this office, but also Bohr's close assistant, the German Heisenberg, sat on the sofa.

"Uh," Chen Muwu hurriedly went back to make up for it, "Werner, I'm just making an analogy. Forget it, I'll put it another way of saying it is more acceptable to you.

"Faced with the French who invaded Alsace and Lorraine, and the Poles who invaded Danzig, would you, as a German, speak to them without any waves in your heart?"

Heisenberg, who had thought for a moment, gave his answer: "Well, how to put it, I hate French and Polish people, but if I only talk about science, I don't think I should care about their nationality." My teachers, Professor Sommerfeld, Professor Planck in Berlin, and Professor Albert Einstein all had many good friends in the French physics community. ”

"Werner, you're not right, science knows no borders, but scientists have nationalities.

"And most people in this world don't think like you do. The fact that two consecutive International Congresses of Mathematicians and two consecutive Solvay Conferences did not allow the Central Powers led by Germany to participate in the conference is the best example of refuting your naïve thinking.

"But I still have to apologize for my behavior, I didn't want to meet someone in Copenhagen who made me feel unpleasant, so I took it upon myself to find a reason to send him to the Netherlands.

"Professor Bohr, I hope to get your forgiveness."

Chen Muwu's attitude of admitting his mistake was very sincere.

But people have been "sent" away by him, no matter how good the attitude is, what is the use?

"Chen, you don't have to blame yourself too much, Renke is a visiting scholar, of course he has his freedom to come and go,"

Bohr paused as he said this, and tried to reach out his pipe and light a tube,

But he also remembered that Heisenberg had told him that Chen Muwu didn't like the taste of tobacco very much, and Bohr, who hoped to make a good impression on him, fought in his brain for a while, and finally gave up his intention to smoke.

"If it were possible, I'd rather send away ten or even a hundred Nishina in exchange for you staying in Copenhagen."

"Uh...... Professor, you think so highly of me. ”

Chen Muwu didn't expect that Bohr could forcibly turn to this topic in such a place.

"It's okay, it's going to be a long time, I think I have time to keep you here." Bohr squeezed a smile out of his face.

"But then again, Chen, do you really think that the study of superconductivity is the mainstream development direction of physics in the future?"

This Yoshio Nishina's mouth is really looser than the waist of the old lady's cotton pants.

He got it quietly by himself, why do you have to tell the world? No wonder Oppenheimer's mood is not very high these days.

Could it be that after listening to the message, he also felt that superconductivity was the mainstream of physics in the future, and then thought that he was hiding his teacher?

Alas, I'm going to have to go back to Oppenheimer and explain it well.

But now, he still has to deal with Bohr and Heisenberg in front of him.

"Well, Professor Bohr, it is undeniable that physicists still know too little about low temperatures.

"I don't know if you've ever seen it, but in my second paper on Chen's statistics last year, I discussed the existence of a condensed matter.

"I've always been interested in whether this condensed matter exists, and maybe when I'm done with this quantum mechanics battle, I'll go back and study low-temperature physics.

"Of course, it is not excluded that we will study the phenomenon of superconductivity by the way."

In the first half, it is complete nonsense to talk about condensed matter or something.

But in the second half of the matter, Chen Muwu told the truth.

He really wanted to, and at the same time had to study the problem of superconductivity.

If he doesn't make a few achievements in superconductivity, then it will be a matter of time before Yoshio Nishina realizes that he has been deceived.

Now that you have drawn a flatbread, you have to cook this cake, so that it is called a beginning and an end!

Bohr did not delve into Chen's words, and anyway, as a purely theoretical physicist, he was not very interested in any experiments.

"Well, Chen, if you think there is a need for research on the superconductivity effect, of course I support you in trying. But as you said, the top priority at the moment is to win the battle of quantum mechanics. I've heard that you're on Einstein's side, and there's a lot of resistance? ”

Chen Muwu nodded: "That's true." It seems that Dr. Einstein's philosophy made him attach great importance to the law of cause and effect. ”

"He's really become a bit stubborn lately, and he's starting to be cautious about physics. But, Chen, I personally agree with you, and so does Timo Werner. ”

Bohr looked at Heisenberg, who nodded in acquiescence.

"The entire Institute of Theoretical Physics agrees with you."

"Professor Bohr, I feel very honored for this."

"Chen, I'm wondering if you can take the opportunity of your visit to Copenhagen to give some public lectures to young people at the Institute of Theoretical Physics. Tell them about your quantum mechanics?

"I think that if there is a real war, it is not enough to have one general, if the general has no soldiers under him, then he will become a nominal commander of the light pole.

"These guys in Copenhagen are very enthusiastic about physics, especially your quantum mechanics, and if you can train them a little, then this is definitely a very effective new force that can help you win the battle of quantum.

"Chen, don't worry, the labor fee for this course will definitely be indispensable to you."

"Professor Bohr, you are so polite. Being able to lecture at the Institute of Theoretical Physics is also a matter of great pride. I'm just afraid that my level is not enough, and I will laugh at me and be generous, and mislead people's children. ”

Lectures, especially quantum mechanics, Chen Muwu is already familiar with it.

Previously, he had already tried the water once at the Capitsa Club organized by Kapitsa.

Then he followed Rutherford's arrangement and gave a series of lectures to the young and old in the Cavendish laboratory.

Chen Muwu can now stand on the podium, no matter how many people are sitting below, he will not have stage fright.

But as for how much the audience understood, he couldn't guarantee it.

This is not because he is too obscure and difficult, but because the steps are too big, and the content is a bit ahead of the time for people today.

……

After agreeing to Bohr's invitation to give a lecture and pretending to prepare for two or three days, Chen Muwu began to lecture on quantum mechanics "founded" by him to a group of young people in their twenties and thirties in the lecture hall of the Institute of Theoretical Physics.

Oppenheimer, who had already heard the similar content twice, was promoted to teaching assistant for the course.

He is a bachelor's degree graduate and knows quantum mechanics better than the PhDs here, which makes him very proud.

Regarding the superconductivity incident that he and Renna Yoshio said before, Chen Muwu spent a long time talking and finally explained it to him.

After hearing that it was similar to what he had imagined when he left the table, that the teacher had deceived the unpleasant person with false news, Oppenheimer was happy again.

He knew that the teacher would not lie to him.

……

Compared with the old Cambridge University, Copenhagen, which is full of young people, can really be described as a "youth storm" that is always blowing.

These peers may have a lot of respect for Chen Muwu, who imparted knowledge to them, in the classroom.

But in their spare time, in addition to asking questions, many people come to Chen Muwu and Oppenheimer and invite them to do all sorts of activities: go to the cinema in the city center to see a new movie, go to the opera house to listen to an opera, continue the dance party before the lecture hall statue, or go to the bar for an all-night drink.

There is only one last activity, which will be rejected by Chen Muwu mercilessly.

Because Chen Muwu is the Olympic swimming champion, he is naturally indispensable for sports.

On more than one occasion, Bohr invited Chen to take a walk in the beech woods of the Karamburg Forest outside Copenhagen during his breaks, which was Bohr's favorite form of exercise.

In the Institute of Theoretical Physics, one of the most popular sports among young people made Chen Muwu unthinkable.

Ping pong.

Table tennis, which was popular for some time in the early 20th century, suddenly disappeared from much of Europe.

It is only in a few countries in Eastern Europe that it has continued.

However, in the twenties, perhaps because of the end of the First World War, table tennis began to gradually revive again.

During breaks, no one in the reading room of the Institute of Theoretical Physics is left to love learning.

They occupied the long tables in the reading room, set up homemade nets, took out celluloid balls and wooden rackets, and played table tennis with a clang.

The early ball-making technology was not perfect, so the shape of the table tennis ball is the same as that of a basketball, which is spliced together with eight-petal celluloid pieces to form a ball.

Rackets are also very simple, they are all cut into round wooden boards with handles, and only a few people will cover the boards with a layer of rubber.

As for ball skills......

All of these people who play well use chipping balls.

And because the score rule completely inherits the 21-point system of tennis, this results in a stinky, long, and unentertaining game.

Seeing the table tennis ball, the Chinese genes in Chen Muwu's body moved again.

He also had a few addictions, just a simple fast break and smash, and even before he used the curveball, he beat these Bohr students to the point where they couldn't fight back.

Where have people seen this kind of skill now, they are amazed that Chen Muwu not only swims well, but even plays table tennis remarkably.

Some were not convinced, and they also came to challenge and asked Chen Muwu to point out.

After a few rounds, there was no arrogance, and only the excited Oppenheimer was left shouting on the sidelines.

In the end, the young people of the Institute of Theoretical Physics had to reach a consensus in private.

That is, before playing table tennis every time again, one or two people from among the participating athletes were sent in turn to ask Chen Muwu for physics problems.

We can't let this sports boss come back to the reading room to ruin their only fun in their spare time.

……

During these days of lecturing, Chen Muwu's impression of Heisenberg was mixed.

In the beginning, Heisenberg would always come to the classroom early and sit in the middle of the first row for the good students.

Not only did he listen carefully, but he also took notes in his notebook meticulously.

However, Bohr, the owner of the institute, only occasionally came to the lecture hall to walk around and inspect it a few times.

Chen Muwu had never seen his senior brother sit on a bench and listen to a lecture in its entirety.

He also thought that this was because Bohr was a Nobel laureate in physics after all, and he should have figured out what he was trying to express from his previous published papers.

But the truth of the matter is that Bohr is a little embarrassed, and he does not want to sit in the audience and listen to a lecture by a young man who is nearly twenty years younger than himself.

That's why Bohr sent his henchman Heisenberg, asking him to listen carefully in class, take good notes, and repeat it to himself when he returns.

Chen Muwu didn't know the twists and turns behind this, and he couldn't stop praising Heisenberg in his heart.

It's no wonder that he was able to go from undergraduate admission to doctoral graduation in three years, but he didn't expect to love learning so much.

It's just that this good impression of peers who love learning doesn't last long.

One morning, Heisenberg suddenly disappeared from the first row.

Chen Muwu's first reaction was, could it be that he was sick?

In his memory, it seems that Heisenberg had symptoms of pollen allergies.

But on second thought, it's already the end of October, and even the chrysanthemums have already bloomed.

And where are the flowers in full bloom that produce pollen that make Heisenberg allergic?

Chen Muwu and the other students inquired, Heisenberg was not sick, but since this morning, no one has seen him in the institute.

This made Chen Muwu, who was standing on the podium, secretly slander himself: It seems that this German's patience is only like this!

I couldn't hold on for a few days!

……

However, Heisenberg reappeared that afternoon, making Chen Muwu understand that he had misunderstood him in the morning.

Because after opening the door of the guest room on the third floor where he lived, Chen Muwu found that it was not only Heisenberg who knocked on the door standing outside the door, but also another person standing behind him.

"Mr. Chen, I didn't disturb your rest, did I?"

"No, no, please come in."

"Let me introduce you to another student of my teacher, Professor Sommerfeld and now a lecturer at the University of Hamburg, Wolfgang Pauli.

"When he learned that you had come to Denmark from England, he came from Germany to meet you. I just picked him up from the train station. ”

"Wolfgang, this is what you've always wanted to see, Dr. Chen Muwu of Cambridge University."

Before Heisenberg was introduced, Chen Muwu had already recognized him as Pauli through those very recognizable eyes.

Why did he come too? Copenhagen is the Institute of Theoretical Physics, and there are no experiments to do.

And looking at his face and expression, he looks like a bad comer.

Pauli is now a little dissatisfied with his junior brother Heisenberg, first introducing himself to Chen Muwu.

Because in his opinion, this is a manifestation of Heisenberg's belief that his status and reputation are inferior to Chen Muwu.

"Hello, Dr. Pauli."

Chen Muwu took the lead in stretching out his hand.

This made Pauli even angrier.

He stretched out his hand very perfunctorily and touched Chen Muwu.

Pauli's brow furrowed from the moment he entered the door, and he didn't even say a word of "hello" in his mouth.

After putting down his hand, he got straight to the point: "Mr. Chen, I have recently carefully studied several papers that you published this summer. Now I regret to inform you that I have found a very ridiculous error in your paper. ”

Chen Muwu felt that this sentence was familiar.

Not long ago at Cambridge University, he heard it from Dirac, who had broken into a lecture at the Kapitsa Club.

And today in Copenhagen, it was Pauli who broke into his room, and repeated it again.

Why are the first words of your gang so disappointing?

(End of chapter)