106 Superconductivity is the mainstream in the future

Style: Historical Author: Zhao ShixiongWords: 6615Update Time: 24/02/20 15:38:28
After another piece of music ended, Heisenberg, who was a little over-exercised, finally sat on the bench in the corner of the room.

Seeing Chen Muwu, who had been here since the beginning of the dance, Heisenberg finally remembered his responsibility as the initiator of the dance, and also remembered who the dance was for.

He was so excited about dancing on the dance floor that he even forgot to tell the Danish girls to take good care of the master of tonight's dance.

"Mr. Chen, why don't you go dance? The young girls in Copenhagen are really nice and enthusiastic. Dancing with good girls is a very happy thing."

This statement from Heisenberg sounds familiar.

If there were no Chen Wu in this world, then these words would have appeared on the Chunyang Maru from San Francisco to Yokohama in 1929, and the target of his words would have become the taciturn Dirac.

Like Chen Muwu, Dirac also disliked and was not good at dancing.

When he refuted Heisenberg's "fallacy", he cleverly used the "uncertainty principle" to "attack the shield with the spear of the son": "Werner, how do you know before you measure it? Are they good girls?"

But now, the uncertainty principle has been snatched away by Chen Muwu. If he said the same thing to Heisenberg again, it would feel almost meaningless, and it might even make people think that he was bragging.

So after thinking for a while, Chen Muwu decided to tell the truth: "Mr. Heisenberg, to be honest, I am not good at dancing. I had to attend a dance in Paris before, and my dance steps were even more random than Brownian motion. If I dance rashly, Get on the dance floor and it will probably lead to a disaster very quickly.”

"Mr. Chen, what you said is really interesting."

After all, Heisenberg was also a physics genius, and he was not as dull as the stereotype left by his fellow Germans.

Oppenheimer, who had retreated from the dance floor, also came to Chen Muwu and Heisenberg.

After a night of carnival, he had become so close to the latter that he even changed his name from last name to first name: "Werner, your dancing skills are really good."

"Robert, yours is great too. It's the first time I've seen an American dance."

Just when the two of them were exchanging business blows here, Chen Muwu saw Oppenheimer, and for no reason he was reminded of the person they saw outside the gate of the Institute of Theoretical Physics when they first arrived this morning.

"Mr. Heisenberg, when Robert and I first arrived this morning, we saw a Far Eastern man at the gate. Is this man a student at the Institute of Theoretical Physics? If so, what is his name?"

"You mean Nishina Yoshio? He is indeed a student of Professor Bohr. By the way, you are both from the Far East, so you must have many topics in common. Hey, Nishina, come here!"

As he spoke, Heisenberg waved to the other side of the dance floor and shouted loudly.

Just now, he praised Heisenberg's brain circuitry as not as weird as ordinary Germans. In the blink of an eye, Chen Muwu was slapped in the face.

Why do people from the Far East always have something in common?

Listening to the name, Chen Muwu knew that it was indeed the same person.

But if you ask him if he knows who this person is, the answer will definitely be no.

If the name were written in Chinese characters, Chen Muwu might still have some impression.

But Heisenberg was speaking in Roman accent. He couldn't even recognize the beautiful teacher Kaede Karen, let alone Nishina Yoshio.

Hearing someone shouting, the short, round-faced man who met Chen Muwu and Oppenheimer that morning ran across the crowd from the other side of the dance floor and ran over.

Chen Muwu observed a little out of the corner of his eye. Judging from his age, he should be in his thirties.

A middle-aged man in his thirties was yelled at by the twenty-year-old Heisenberg. He asked himself that he would never be so angry.

"Mr. Chen, this is an oversight on my part. I should have introduced you to him a long time ago.

"Mr. Chen, this is Nishina Yoshio, who is now studying and working at the Institute of Theoretical Physics.

"Nishina, this is Dr. Chen Muwu from Cambridge University, now the most famous Chinese physicist in the world."

It stands to reason that at this time, Chen Muwu, as the higher-status person introduced later, should reach out first.

But he didn't want to shake hands with me at all, so he just pretended to be stupid in his position.

But the next operation of the person in front of him really opened his eyes.

Seeing that Chen Muwu had no intention of shaking hands, his expression did not change at all.

There was still a smile on his face, but his hands were placed on both sides of his thighs. Then he faced Chen Muwu directly and bowed to him.

"Dr. Chen, nice to meet you, I am Nishina Yoshio."

This nation is really capable of bending and stretching.

Chen Muwu was still unhappy. He knew this person was Nishina, but he still didn't know who he was.

"Sit down, Werner said you are me. I wonder if you can write Chinese characters?" He deliberately emphasized the pronunciation of the word "China". "You yourself insist on inventing a strange pronunciation for Chinese characters. I want to know what your Chinese name is. Robert, did you bring a pen and paper?"

"No need to bother," I quickly took out a notebook and pen from my clothes, wrote my name, and handed it over respectfully.

The sharp-eyed Oppenheimer was the first to point to a Chinese character on the notebook and said: "I know this character, it's called 'ren', which means benevolence!"

His words were somewhat showy, and Chen Muwu was actually a little surprised. Why did Oppenheim learn Chinese so quietly?

But what surprised him even more was the four vertical Chinese characters written on the notebook.

Yoshio Nishina.

Oppenheimer did get the first one right.

Chen Muwu never expected that he would actually meet the person in charge of this "Benevolence Project" at the Institute of Theoretical Physics at the University of Copenhagen, Denmark.

The so-called "Plan Nishina" refers to Japan's atomic bomb plan, which is named after the first character of the name of the person in charge, Yoshio Nishina.

So now, sitting next to Chen Muwu, is someone who will build an atomic bomb for the United States in the future. Sitting next to him is someone who will build an atomic bomb for Germany in the future. Standing in front of him is someone who will build an atomic bomb for Japan in the future.



Yoshio Nishina should be regarded as the person who admires Chen Muwu the most among the entire Institute of Theoretical Physics.

My morbid desire for strength is most vividly expressed in Nishina Yoshio.

Because Heisenberg was Bohr's favorite and most valued young man in the entire institute, today at the dance, Yoshio Nishina was willing to be summoned by this young man who was more than ten years younger than him. go.

His admiration for Chen Muwu also comes from this kind of Mu Qiang's heart.

As an East Asian with black hair and yellow skin, Chen Muwu is not only talented in physics at a young age, he is also a good swimmer in sports.

But Yoshio Nishina was also the person who looked down upon Chen Muwu the most in the entire Institute of Theoretical Physics.

Like Kikujiro Ishii, Japan's ambassador to France, who was in the audience at the previous Olympic Games, Yoshio Nishina also believed that Chen Muwu was a despicable supporter.

It's just that this supporter got lucky and made several discoveries and inventions that shocked the world, so Yoshio Nishina had to grovel in front of him.

At first, Chen Muwu just wanted to ask Heisenberg who the Nishina Yoshio he saw outside the gate of the Institute of Theoretical Physics was.

Unexpectedly, because Chen Muwu never danced a dance from beginning to end, Heisenberg felt a little guilty.

So he was a little too enthusiastic and called Yoshio Nishina directly.

To this day, Heisenberg is still in a state of delusion.

Seeing Yoshio Nishina's respectful look, he thought that there would be endless things to say between the two Far Easterners.

So Heisenberg stood up consciously and made room for Yoshio Nishina, who had been standing.

"Dr. Chen, PeopleSoft, you guys chat, I'll go dance again."

So Yoshio Nishina took advantage of the situation and sat in Heisenberg's original position.

Oppenheimer, on the other hand, still sat motionless because he clearly remembered the look of disgust on Chen Muwu's face when he told him that the man was himself in the morning.

"Mr. Chen, I have admired you for a long time, and I finally got to meet you today." After sitting down, Nishina Yoshio immediately flattered Chen Muwu, "Mr. Chen is very talented at a young age. Not only has he made great achievements in physics, I discovered the ninth planet in astronomy and won four gold medals in a row at the Olympics. I am truly the light of East Asia!"

Well.

Once the Chinese achieve success, they begin to say that they are the light of East Asia, as if they are also proud of being East Asians.

How they licked Su Shen, who ran 9.83 seconds in the 100-meter semi-finals at the Tokyo Olympics, now they lick Chen Muwu the same way Yoshio Nishina did.

However, Yoshio Nishina refused to even say the name of the Yellow Emperor Star and kept talking about the ninth planet. This shows that he is still very unconvinced in his heart.

"Thanks."

Chen Muwu didn't want to waste even one more word with him.

However, Yoshio Nishina still did not give up, and he pestered Chen Muwu to talk about domestic politics.

"Mr. Chen, I heard that your country is not peaceful these days.

"General Wu from the central government and General Zhang from outside the Pass started a war, and the entire area around the capital became a battlefield. Who do you think will win between them?"

What Yoshio Nishina was talking about was the Second Zhili-Fengshi War that took place in September 1924.

It is said that it is a war between the two major warlords, the Zhili clique and the Fengcian clique, but ultimately it is still a proxy war.

The forces behind them are the European and American powers and Japan competing for interests in China.

Cao Kun, Wu Peifu, and Zhang Zuolin, the nominal leaders of the direct and subordinate cliques, are just pawns on the surface.

But no matter what, it is always "the people suffer when things prosper; when they die, the people suffer".

But of course he would not express his inner thoughts to the person in front of him: "I have never thought about domestic affairs. I am only interested in physics now."

When physics was mentioned, the words behind Yoshio Nishina's spectacles also brightened up: "So Mr. Chen, what do you think is the mainstream development direction of physics in the future?"

Chen Muwu, a young man in his early twenties, has produced so many physics results in just over a year.

This makes people sigh that his physics intuition is very sharp.

Yoshio Nishina also saw this, so he pretended to ask this question inadvertently, hoping to find some inspiration in Chen Muwu's answer.

Upon hearing this question, Oppenheimer, who had been doing nothing just now, also leaned over and wanted to hear the teacher's answer.

"Robert, go dance again. I will only tell Nishina the next words. This is a secret among us Asians."

Although Oppenheimer was dissatisfied with the teacher's behavior, he finally got up and left his seat.

But the moment his butt left the seat, he figured out something.

Since Teacher Chen hates this person, he will definitely not tell him his true thoughts.

The reason why I don't let myself stay here is because I am afraid that after hearing it, I will go astray.

That must be it!

"Hmm..." Although he already had the deceptive answer in his mind, Chen Muwu still frowned and pretended to think for a moment, "I think the mainstream direction of the development of physics in the future should be the superconducting effect."

His answer was somewhat unexpected by Yoshio Nishina.

Originally, Yoshio Nishina thought that the answer given by Chen Muwu would be inside the atomic nucleus. After all, he had just established quantum mechanics to solve problems in the microscopic world.

"Mr. Chen, could you please explain this point of view in detail?"

"No problem at all.

“At one stage in the development of electricity, one way people differentiated conductors from insulators was by looking at how resistance changed with temperature.

“If the resistance decreases as the temperature decreases, then the substance is a conductor and vice versa is an insulator.

"But when the temperature drops to a very low level, what happens to the resistance of the conductor?

"Lord Kelvin believed that electrons in a conductor would be frozen by low temperatures, but Lord Dewar believed that if there was an ideal conductor without any impurities and defects, its resistance might be zero at absolute zero.

"Unfortunately, neither of the two people was right. In 1911, Professor Kamerlin Onnes of Leiden University in the Netherlands discovered in an experiment that when the temperature dropped to about 4.2 Kelvin, the resistance of mercury metal increased. The rate becomes so small that it cannot be measured and can be regarded as zero. This is the first time in human history that superconductivity has been discovered.

“A person with even the most basic education in physics knows what it means when the resistivity of a material goes to zero.

"Even if silver, which is the most conductive but expensive, is used to make wires, considerable losses will occur during the transmission of electricity over long distances.

"But what if this kind of superconductor with zero resistivity is used to make wires? Then the loss during the transmission process can be ignored, which not only improves efficiency but also saves energy.

“With the development of science and technology, people’s demand for electricity will only become higher and higher in the future.

“And physics serves to improve the quality of human life.

"That's why I say that the superconducting effect is the mainstream development direction of physics in the future."

Seeing Chen Muwu speaking so seriously, Yoshio Nishina really thought that the young Chinese was unprepared and told him everything he was thinking.

He wanted to squeeze more useful thoughts out of Chen Muwu, so he continued to ask: "But Mr. Chen, now the superconducting effect can only appear at temperatures below ten Kelvin. If the conductive material is maintained at such a low temperature, Under the environment, doesn’t it also consume a lot of energy?”

"You are right, now humans can only obtain superconductors under extremely low temperature conditions.

"But you have overlooked one thing, that is, the critical temperatures at which superconducting effects occur are different for different materials.

"The first metal mercury, Hg, to discover superconductivity was element 80, with a critical temperature of 4.2 Kelvin.

“In 1913, people discovered that element 82, lead (Pb), also had superconducting phenomena. Its critical temperature was nearly twice higher than that of mercury, reaching 7 Kelvin.

"Although the phenomenon of superconductivity has been proposed for more than ten years now, people's understanding of it is still only a blind person trying to grasp the elephant, and they cannot get a full picture of it.

“For example, element 81, thallium Tl, is sandwiched between the two.

"Compared with mercury and lead, which are abundant on the earth on both sides of it, thallium is a relatively rare metal element.

"As far as I know, so far, no physicist has designed and conducted experiments to verify whether the thallium element sandwiched between mercury and lead has superconducting properties?

“If it existed, what would be the superconducting critical temperature of thallium?

"I think that if we can find the critical temperature of thallium, we might be able to discover some rules about the superconducting effect from these three adjacent elements."

Chen Muwu finally finished speaking what was on his mind.

And what he said was really not serious nonsense, but the truth that couldn't be more real.

Superconductivity is indeed a popular subject in later generations of physics.

Even excluding Onness, who won the Nobel Prize in Physics in 1913 for discovering the superconducting effect.

In the future, research on superconductivity will also allow nine other physicists to wear the physics prize in the four years of 1972, 1973, 1987 and 2003.

Although this number may not be the largest among all sub-disciplines of physics, there is no doubt that it is among the best.

And the thallium element mentioned by Chen Muwu is an unavoidable threshold in the corresponding superconducting research.

Although the superconducting critical temperature of thallium metal is only 2.4 Kelvin, it is not comparable to mercury's 4.2 Kelvin and lead's 7 Kelvin.

However, the superconducting critical temperature of thallium-mercury-copper-barium-calcium-oxygen series material (Hg12Tl3Ba30Ca30Cu45O127) has reached an astonishing 138 Kelvin.

Before 2015, this was the highest superconducting critical temperature that humans could achieve in the laboratory.

For this person who had a hatred of his country and his family, Chen Muwu could be said to be upright and selfless. He basically revealed the development of superconducting physics in the next one hundred years to Yoshio Nishina in relatively obscure words.

From beginning to end, he never said anything contrary to the future development of superconductivity.

However, human memory is always limited. Even a genius like Einstein cannot remember everything clearly.

And Chen Muwu is even more impossible.

What's more, he is not a chemistry major after all, and his knowledge of chemistry is just a scratch.

So is it understandable that Chen Muwu didn't remember that "whether thallium or thallium salts are highly toxic to humans"?

Perhaps because of the Zhu Ling case, the Chinese people are all familiar with the terrible poison thallium.

But now in 1924, thallium has only been discovered for more than sixty years, and people's understanding of this element is still very limited.

In the 1890s, French dermatologist Sablan discovered that his patients suffered massive hair loss after taking trace amounts of thallium salts.

Just like sildenafil, which was originally developed to treat cardiovascular diseases, was transformed into an aphrodisiac after it was discovered that it had miraculous effects on male function.

When people discovered that thallium salts have side effects of hair loss, they also had a flash of inspiration and made a hair removal cream with a mass percentage of 7 thallium acetate, which was sold well in Europe and the United States. Just like other ordinary beauty products, it entered thousands of households.

In today's world, it should be said that no one except Chen Muwu knows how toxic thallium is.

Although historically, the Nishino plan under the leadership of Yoshio Nishina was not successful in the end because of the bombing by the US military.

But Chen Muwu is very afraid that the butterfly effect caused by his time travel will change this, and the world will enter the timeline of The Man in the High Castle.

Regarding Heisenberg, Chen Muwu also wanted to try to make some changes to see if he could prevent him from returning to China to participate in the uranium project.

But for Nishina Yoshio? That's really sorry.

No matter whether he is a great physicist or not, for Chen Muwu, because he is a person, it is already an unforgivable sin.

But from beginning to end, the kind-hearted Chen Muwu did not choose assassination, shooting, or causing a car accident.

He just introduced to Yoshio Nishina the mainstream direction of future physics development in his mind.

Similarly, Yoshio Nishina decided to study the superconductivity of metal thallium just because of his own interest, his love for physics, his pursuit of truth, and the noble cause of superconductivity that can improve the quality of human life. Characteristic.

If during the experiment, Mr. Yoshio Nishina was accidentally poisoned, and then lost his hair, had various reactions, and eventually died.

Then Chen Muwu will definitely express his deep regret for the death of this physics colleague.

After all, he died in pursuit of the truth!

Chen Muwu, who was still sitting on the bench by the dance floor, was smiling, but he was a little anxious in his heart.

He wanted to know whether the fish in front of him would take the bait in front of the pie he drew.

Yoshio Nishina thought thoughtfully: "So Mr. Chen, your research direction in the future is the superconducting properties of thallium metal?"

Chen Muwu pretended to sigh: "PeopleSoft, to tell you the truth, I have more than enough ambition but not enough power. Rutherford, the director of the Cavendish Laboratory, has always been only interested in things inside atoms,"

He started talking nonsense again, "He didn't let me focus on low-temperature physics and metallic superconductivity at all.

"I saw today that you are just like me, both Asians and geniuses in physics, but you are ostracized everywhere in the European world.

"I saw my own reflection in you, so I spoke to you from the bottom of my heart and expressed the truest thoughts in my heart.

"Nishina-kun," after talking so much today, Chen Muwu finally added a title after Yoshio Nishina's last name for the first time, "are you interested in cooperating with me once? Let's study the superconducting properties of this metal thallium. How is it?"

(End of chapter)