The preparation of this experiment is much more complex than before, and the requirements for temperature adjustment and detection are higher, so it is necessary to control the experimental design and process more accurately.

In addition, the experiment uses an iron-based alloy superconductor, and the excitation superconducting temperature is only about 20K (Kelvin), so it is necessary to make an ultra-low temperature below minus 250 °C, which is several times more difficult.

"It's better to have a large device that can precisely control the temperature."

Xiang Qiansheng said, "With our current equipment to do this experiment, the experimental design will be very complicated, and the accuracy will not be enough. ”

Wang Hao thought for a while and asked, "The accuracy is almost acceptable, I just want to see the phenomenon,"

He Yi was a little distressed when he heard this, "This experiment is estimated to cost a lot of money." ”

"Don't worry about the money." Wang Hao didn't think about the issue of funding, as long as it was within the normal cost range, it was acceptable, even if it cost more, a few million for an experiment was enough.

Xiang Qiansheng thought about it, but still suggested, "Professor Wang, do we all have to do such experiments in the future?" If you do a lot of work, I still recommend buying a large device that precisely controls the temperature. ”

Wang Hao asked, "How much does it cost to buy such a device?" ”

"Money, not the key."

Xiang Qiansheng said, "This kind of equipment is imported, and it is ordered from a fixed manufacturer, and it takes a long time from ordering to manufacturing, transportation, and commissioning." This kind of equipment can be delivered in a year, and the speed is already very fast. ”

He continued, "If we use more in the future, we can buy it from other labs, and the superconductivity lab has an idle temperature control device that has been idle for more than two years, and their project is not available for the time being." ”

"How much does it cost?" He Yi immediately asked, it is good to buy second-hand top-notch scientific research equipment, mainly because the price of cutting-edge equipment is too high, and ordinary laboratories can't afford it.

"More than 30 million."

Xiang Qiansheng thought for a moment and said a number, and then explained, "It cost 60 million to introduce that equipment, and although it has been used for many years, it is estimated that it only costs 30 million, and the superconducting laboratory is not willing to sell it." ”

State-of-the-art scientific research equipment is not an ordinary electronic product.

The market for this cutting-edge equipment is small, and only large labs will buy it, but again, it is difficult to buy it.

Wang Hao nodded, "Let's prepare this experiment first, and if the results meet expectations, we will consider purchasing new equipment." ”

By the time the meeting was over, the lab was busy.

This is a big experiment.

It took more than a week to prepare for the experiment, and without purchasing new equipment and materials, each part of the experimental device was built by hand, and even the lines inside were connected one by one.

When everything was ready, everyone gathered in the operation room and was ready to start the experiment.

There was tension and anticipation on everyone's face.

This is a very large experiment, not because the scale is too large, but because the demand for the experiment is too high, and the corresponding cost is also very high, and the total cost of the experiment is more than 5 million.

In the past, the maximum cost of the experiments they carried out was only 600,000 or 700,000 yuan.

In addition, the interesting goal of the experiment is to detect the phenomenon of alternating gravity field before the superconducting state is excited.

"If the superconducting state is not excited, will an alternating gravitational field be generated?"

"This is what Professor Wang said, it should be fine, right? I don't believe anyone, and I believe Professor Wang. ”

"But it still doesn't sound reliable."

"If the AC gravity field can be detected without excitation in the superconducting state, doesn't it mean that it is possible to achieve normal conduction at room temperature to excite the AC gravity field?"

"Now that we're making ultra-low temperatures, you're thinking too far, aren't you?"

A lot of people were whispering about it.

They were indeed very curious about the experiment, and so did Liu Yunli and the others, who felt as if they were about to witness a miracle.

The people in the physics laboratory have great trust in Wang Hao, and it can even be said that it is a kind of fanaticism, they have not yet reached this level, and they still feel that it is impossible to achieve antigravity in a non-superconducting state.

Wang Hao stood in front of the experimental equipment, pursed his lips and looked at it for a long time, and then waved his hand, "Let's start." ”

Then he stepped aside to watch.

Although the cost of the experiment is large, the detection accuracy required is higher, and the experimental process is no different from the original.

The experiment is that after the power is on, the temperature is constantly lowered, and after it is reduced to minus 150 °C, the speed has begun to slow down.

When it is reduced to below minus 200 °C, the rate of reduction is slower, and the value is also decreasing little by little, and the superconducting temperature of the iron-based superconductor used in the experiment is minus 259 °C.

When the temperature reached minus 250°C, everyone took a serious look at the logo - the ultra-thin balloon.

Several ultra-thin balloons are suspended directly above the device, and the average density of the balloons is almost the same as that of the air, as the top and sides are isolated by a glass cover, and there is no air flow inside, and the balloon does not rise upward.

The temperature is still slowly dropping.

-

251℃。

-

252℃……

When it reached '-253°C', the balloon in the glass cover suddenly rose slowly.

Although it only rose a little, the operation could not help but send a burst of exclamation, because the temperature has not yet reached the critical line of superconductivity.

The temperature continues to drop.

-

253℃。

Several balloons have been attached to the top of the glass cover, and other detection equipment has also changed their values, and the pointer that detects the value of the AC gravity field has also been slightly deflection.

Everyone was very excited, but everyone held their breath.

The experiment continues.

In the end, the temperature reached minus 259°C, and when the superconducting state was activated, the detection pointer suddenly deflected significantly.

But it doesn't matter anymore.

"That's it!"

Wang Hao's voice was also a little excited, and the theory he studied was verified again, which showed that his research direction and conclusions were correct.

The people involved in the experiment are still carefully recording the data.

Others couldn't help but excitedly discuss, "This is a new discovery, right?" ”

"It turns out that the excitation of the AC gravitational field does not necessarily have to be in the superconducting state, and the ordinary conductive state is also possible......"

"Or maybe it's that in the ordinary conductive state, the AC gravity field is so small that it can't be checked? Completely obscured by electromagnetic fields? ”

"Alternating gravitational fields, which may also be related to electromagnetic fields?"

"Anyway, it's definitely a big discovery! Super big find! ”

Liu Yunli, Ruan Weiping, and Xue Chang were also very shocked, and they also knew that there was definitely a big discovery in front of them.

They are only technically studying the exchange of gravitational fields, but no matter how much they study them, they will not be able to make such discoveries.

The three of them were silent together.

Xue Chang said, "So I always felt that there was no point in our research. ”

"Let's move over quickly!"

"With the help of Professor Wang's theoretical research, we can find the direction of improvement in technology......

Ruan Weiping pursed his lips and said, "You can apply for a look at the matter of moving here, but I think it is more important that we should study Wang Hao's annihilation and topological theory." ”

"If we don't understand this, we'll never catch up."

Liu Yunli and Xue Chang nodded together, they didn't care about the 'annihilation topology theory' before, but now they finally found that the 'difficult to understand' theory that Wang Hao said was the most important.

If they can't figure out the underlying theory, they can only follow and watch, and they can't really participate in the research.

……

After making new discoveries, the laboratory still does data summary and experiment summary.

Wang Hao began to do further research, and his topological research on the microscopic morphology of conductors encountered a bottleneck.

But soon, the good news came.

Lin Bohan officially left his job and came to Xihai University, signed an agreement to become an associate researcher of the Mason Number Laboratory, and also joined the AC gravity research project of the Physics Laboratory.

Lin Bohan's departure was not easy, mainly because the Center for Mathematical Sciences attached great importance to him.

There are many postdoctoral fellows in the Center for Mathematical Sciences, and Lin Bohan is not the best among them, but he is very optimistic.

One is because he is a doctor from Mizuki University.

The second is because his field is geometric topology, and he has also published a top paper.

It's remarkable.

A top journal paper seems to be nothing, in fact, what is the content to be published, topology is a small discipline of mathematics, there are few scholars engaged in geometric topology research, and the research threshold is also very high.

At the age of about 30, he has published a top journal paper in a related field, which can be classified as a 'rare talent'.

Qiu Chengwen attached great importance to Lin Bohan, he knew that Lin Bohan was going to go to Xihai University, and an angry scolding against Wang Hao almost erupted.

Originally, his temper was a little stubborn, and he was panting when he knew the news.

In the end, Lin Bohan was also brought in to talk face-to-face.

Lin Bohan said that he wanted to do research with Wang Hao, and the treatment of Xihai University was very good, he could directly participate in big projects, and he didn't have to worry about funding, so he couldn't even find a reason to refuse.

He wanted Qiu Chengwen to help him think of a reason, but Qiu Chengwen couldn't think of it.

The conditions of Shuimu University are indeed good, but because there are too many talents, the treatment that can be given to Lin Bohan will definitely not catch up with Xihai University, and he can't even directly hire associate researchers, let alone funding, which is basically impossible.

Good colleges and universities do have a lot of funding, but the high funding has nothing to do with the bottom, ordinary scholars still have to rely on their own application, at most they can get a little subsidy.

Even scholars in the Center for Mathematical Sciences have to apply for the Outstanding Young Scholars and Outstanding Young Scholars program on their own.

The funding for these projects is very intense, and the subsidy rate is less than 10 points for a long time, and it is difficult to apply for pure mathematics research.

If it is a major category of mathematics, such as the field of partial differential equations, it is relatively easy to apply for funding, and topology research is one of the most difficult fields to apply for funding, and even many people think that the study of algebraic geometry and topology has nothing to do with reality, and the research has no practical significance.

Qiu Chengwen could only say with depression, "It's okay to go to Wang Hao." Wang Hao is the best mathematician, very thoughtful and capable, and has surpassed me. ”

"He asked you to go by name, and you definitely don't have to worry about the treatment."

"There is a shortage of talents at Seohai University, and you will be more valued there......"

Then Lin Bohan came.

Wang Hao really attaches great importance to Lin Bohan.

After Lin Bohan officially joined the company, he immediately pulled the other party to do research together, "Dr. Lin, you came just in time!" ”

"I'm having a headache with research."

He pulled Lin Bohan and said, "I am studying a geometric problem similar to the microscopic form, which will form a two-dimensional infinitely extended shape after the topological phase transition......

Wang Hao said carefully.

His imagination of the microscopic shape of the conductor is like an irregular sphere, and the two sides of the sphere are open.

In the imagination, the microscopic form is a special sphere, but its real structure is not like this, and several requirements must be met.

One is that after extrusion, the 'special force field' wrapped inside will escape, or it will affect the microscopic application in the central channel, and the alternating gravity will be formed.

The second is its topological form, which is an infinitely extended two-dimensional cylindrical plane, and the two-dimensional cylinder is not perfect, there will be some holes in the middle, and the cylinder itself will not affect the microscopic motion.

The third is that any two straight lines on the surface of a special sphere will intersect, and at the same time, in its topological form, any two straight lines are parallel and do not want to intersect.

The last point is the most difficult to satisfy, and the research also involves complex geometric analysis.

This special geometry is directly related to the properties of the microscopic morphology within the conductor.

Wang Hao believes that the microscopic morphology in the conductor is directly related to the electromagnetic force, or in other words, the microscopic morphology determines the electromagnetic force.

In the special state of superconductivity, the microscopic morphological topology results in a conductor in the superconducting state, which is no longer affected by electromagnetic forces (this has been confirmed).

In addition, there is a direct relationship between the microscopic morphology and the AC gravity field, and some microscopic morphologies are more complete and more difficult to topologicalize, which means that the requirements (temperature) for activating the superconducting state are higher.

Conversely, high-temperature superconducting materials are used.

Lin Bohan listened to Wang Hao's statement, and suddenly felt a little incomprehensible, "In the concept of topology, there is no concept of size, and the infinitely extended two-dimensional cylindrical plane should be discussed in a geometric direction." ”

"Maybe it can also be understood as 'directional topology'?"

"If we study the original form of the topology, we can create a completely new geometry......"

Lin Bohan said that his main direction is geometric topology, but he has a certain amount of involvement in Euclidean geometry and Riemannian geometry, "If you are creating a new geometric space, the definition should be more rigorous." ”

Wang Hao asked, "How to understand a specific three-dimensional geometric space, where any two straight lines intersect?" ”

"It's easy!"

Lin Bohan wrote down the definition and made a graph, and then the two discussed it together.

……

It is indeed very interesting to define a new geometry according to the actual needs of the research.

Geometry is not fixed.

The geometric theorems in primary and secondary school textbooks are only the foundation of the foundation, and when they really enter the field of geometry, all the conventional definitions and axioms have become an ordinary basic definition.

For example, the famous Riemannian geometry.

A fundamental definition of Riemannian geometry is that any two straight lines in the same plane have common points (intersection points).

The existence of parallel lines is not recognized in Riemannian geometry, and another of its postulates says that straight lines can be extended indefinitely, but the total length is limited.

These definitions are clearly counterintuitive.

However, Riemannian geometry is the mathematical basis of general relativity, and at the same time, Riemannian geometry is also an important tool in mathematics, which is not only the basis of differential geometry, but also applied to differential equations, variational methods and complex function theory.

What Lin Bohan and Wang Hao are doing now is trying to define a new geometric space so that it can meet the needs of their research.

To this end, Wang Hao also established a task of 'microscopic morphology research inside conductors' -

[Task 1]

[Research Project Title: Microscopic Morphology of Conductors (Difficulty: S).] 】

[Inspiration: 17.] 】

……

When really committed to a very interesting study, time seems to become the least important thing.

Soon another two weeks passed.

This is a very important time, as the International Congress of Mathematicians in Austria is about to begin.

The domestic academic circles are very concerned about this international conference of mathematicians.

A lot of people are focused on awards.

Although it is said that Wang Hao will definitely win the Fields Medal, there is no 100% certainty whether it will be awarded to Wang Hao, and Wang Hao's award is obviously of great significance.

One is that he will become the first domestic scholar to win the Fields Medal.

Second, he will become the youngest laureate in Fields' history.

Both of these points are very important.

Xihai University is not worried about winning the award, especially the few people who know the details, including Luan Haiping, Chen Qinghua, and other senior leaders of the university, who know very well that Wang Hao will definitely win the award.

Because......

The medals and certificates have been sent to Seohai University in advance.

The Fields Award Committee attaches great importance to Wang Hao's award.

They seemed to be afraid that Wang Hao would not accept the award, so they sent staff to Xihai University in advance, on the one hand, to deliver the medals and certificates, and on the other hand, they wanted to have a simple award ceremony through video communication.

There were two staff members who came.

One is Kim Hee-nian and the other is Brown Broadbaker.

After they came, they were warmly received by Xihai University, even if it was just ordinary staff, but they definitely received different treatment when they came to give Fields medals.

Brown Broadbeck is more focused on work, and after he came, he wanted to talk to Wang Hao about receiving the award.

"Where is Dr. Wang?"

"We're going to talk about the award process, or the communication process."

Kim explained, "Our job is not only to give away medals, but also to ensure smooth communication, and wait until Dr. Wang finishes his report before leaving." ”

The school sent someone to find Wang Hao.

Wang Hao is doing research with Lin Bohan, and they can be said to be modest without leaving home, and their research is so crazy that they ignore time.

When he heard that the math club would send someone to give away the medals, he just waved his hand and said, "I paid attention to the time, didn't I want tomorrow?" ”

The opening ceremony of the International Congress of Mathematicians will indeed take place tomorrow.

Brown Broadbeck and Kim Hee-nian couldn't see Wang Hao, so they could only go to the hotel for one night in a depressed mood, but the next morning, they still couldn't see Wang Hao.

It's not just that they're in a hurry, but even the people in the school are in a hurry.

This is the Fields Medal ceremony.

Even if you have definitely won the award, the process of awarding the award is also very important, because Wang Hao is likely to win the award, but there is a live broadcast by the media, and there will be many people watching the live broadcast.

At eight o'clock in the morning, Luan Haiping called Wang Hao, and together with Chen Qinghua, Zhou Qingyuan and others, he quickly rushed to the restaurant, almost dragging him to the government affairs building.

An office in the government building, everything is ready.

Wang Hao stood in the middle a little depressed, turned his head and saw the background of 'a lot of mathematical symbols', which looked really good.

But it's too deliberate!

"Actually, you don't have to worry, I have to pay attention to the time, it doesn't start until nine o'clock, and I plan to go to the office......"

"It's half past eight now!" Zhou Qingyuan hurriedly emphasized.

Others still have to pay attention to their tone when talking to Wang Hao, but Zhou Qingyuan has no scruples, "There is still half an hour to start, we are all worried about you, what if you miss it?" ”

"No......"

Wang Hao said weakly, he was still thinking about geometry in his mind, he really didn't care too much about the award, anyway, he would definitely win the award, and when the time came, he could just show his face on the camera.

Then came the restless waiting.

The others looked even more excited than Wang Hao, while Wang Hao felt like a groom who was about to get married, standing on the stage and quietly waiting for the 'ceremony'.

Fortunately, the wait was not long.

The opening ceremony of the International Congress of Mathematicians was the award ceremony, and the first award was the Fields Medal, which can be said to have reached a climax all of a sudden.

On the screen next to the office, the timely situation of the scene was displayed, and the host shouted, "Next, announce the list of Fields winners." ”

"First of all, Lolsisco......"

"He is developing stochastic conformal mappings, geometry of Brownian motion in two-dimensional spaces......"

"Elder Bargava ......"

"Alix ......"

The host said three names in a row, and the mathematicians who called their names walked up to the stage and took away their own medals and certificates, and also said a short sigh by the way.

Then the host announced the last name, "I think everyone already knows in advance." ”

"The last winner, Wang Hao!"

"Dr. Wang Hao has made outstanding contributions to the field of number theory and partial differential equations."

"He proved the Goldbach conjecture of the century, and he solved the NS equation problem that is directly related to the application."

At the same time, he also completed research on the Kakutani conjecture, the classification of infinite columns, and the Mongeriampère equation......

"This year's Fields Medal should be awarded to him, of course."

There was loud applause from the audience.

The host continued, "Dr. Wang Hao did not come to the scene, but we can contact him by means of video call. ”

The large screen screen was switched to the office of the government affairs building of Xihai University.

Wang Hao was dressed in casual clothes, with a symbolic background behind him, standing in front of the camera, he waved hello, "Hello everyone." ”

Brown Broadbeck and Kim Hee-nian appeared together, handed over the medal and certificate respectively, and also helped Wang Hao hang the medal around his neck.

When Wang Hao faced the camera again, he also knew that he should say something, he thought for a while, and said with a flat expression, "Now, I feel very excited." ”

"The Fields Medal, the highest award in the international mathematical community, is very meaningful."

"Everyone knew I was going to win, but I didn't even know about it."

"I went to breakfast this morning and was pulled here to receive the award, which was a real surprise!"

"Thank you to the International Mathematical Society, to Hopewell University, and to all of you for ......"

After he finished speaking, he turned his head to look at the others, and the meaning in his eyes was revealed, "That's okay, right?" ”

A group of people fell silent.

The eyes and expressions they looked at seemed to describe a few big words, "Can you fake it a little more?" ”

(Ask for a commuter pass)

(End of chapter)