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Chapter 242 Helium Knife Fountain

"Students, Landau is a very romantic scientist. His biggest feature is his encyclopedia knowledge of a variety of scientific fields, especially his strong interest in marginal science. In the physics community, Landau is known as the last all-round physicist of the 20th century."

"Although Landau did not delve into the details in his research, his creative and intuitive logical thinking often triggered wonderful associations, which made Landau discover many milestone achievements in many marginal disciplines of the time."

Zhao Yinong, the principal of Dongda University, stood on the podium and talked happily

"In 1958, to celebrate Landau's 50th birthday, the Soviet Institute of Atomic Energy gave him a marble flat plate with 10 most important scientific achievements in Landau's life's work."

"In order to commemorate this great physics genius, people in later generations borrowed religious terms and called the achievements of Landau the "Ten Commandments of Landau". The superconductor theory that students will learn in the future and today's experiment - the superfluidity of helium is related to the Ten Commandments of Landau."

"There is an experiment? This year's experiment is so early."

"Dean, what is the relationship between superfluidity and superconductivity?"

"Director, didn't you say that the first experiment this year was magnetic levitation before the holiday last year?"

As soon as Zhao Yinong finished speaking, questions from the bottom flocked to him.

Due to the adoption of heuristic teaching, the teaching atmosphere of the juvenile class is extra relaxed, and the discussion in the classroom is very free, and students have the right to speak at any time.

Liang Yuan sat in the third row under the podium, honestly writing on his notes about Landau's scientific research results - density matrix and statistical physics in quantum mechanics (1927); free electron antimagnetic theory (1930); secondary phase transition (1936-1937); ferromagnetic domain theory and theoretical explanation of antiferromagneticity (1935); superconductor mixed state theory (1934); atomic nuclei probability theory (1937); helium II superfluidity quantum theory (1940-1941); charge constraint theory of fundamental particles (1954); Fermi liquid quantum theory (1956); weak interaction CP invariance (1957).

"I really want to be born a hundred years earlier. Let's take a look at the golden age of physics development. Einstein, Boer, Landau, Rutherford... The style of these masters is fascinating. I read biography of Landau during the holidays. Landau had fully mastered calculus when he was 13 years old. Let's see what we were doing? When he was older than Landau, he had just started his college courses under the hat of genius..."

Wang Mengmeng sat next to Liang Yuan and laughed at herself in an old-fashioned manner.

"Xiaoyuan, it's rare recently. Fatty and I have counted it. You have been in class for nine days in a row, never late or leave early, and stayed in the dormitory for the first time for the first time. Tell me, why did you suddenly remember to turn back to the right?" Wang Mengmeng saw Liang Yuan finishing the notes and came over with a gossip on her face.

Although Liang Yuan has arranged time and plans to gather the entire Yuanjia senior management to hold a large-scale meeting to unify the recent development ideas of the group senior management, all the people who received the meeting notice are on the heavy responsibility and are so busy that they can do whatever they want like someone.

The notice was issued for more than a week, and it was only enough for everyone to finish the work at hand. It was estimated that the general itinerary was done, but Liang Yuan was so tired that he could only stay in Shengjing honestly, waiting for Yuanjia's administrative department to join the itineraries of the heads of each branch. In boredom, Liang Yuan pretended to be a good student and went to class and finished school with two little girls every day.

"You and the fat man are like urging death. If I don't get a tent or something, I will be slandered by you if I sneak away?" Liang Yuan said disdainfully.

What Tang Wan and Liang Yuan said was simply top secret, and Liang Yuan was destined not to explain in detail to Wang Mengmeng and others. At present, the banner that the students were waving was still against the official position. Liang Yuan could not object to this kind of justice requirement, so he had to respond to the matter first and ask his family after going home.

"Xiaoyuan, your mother is the chief engineer in Nanhu Science and Technology Park. It's okay to get some tents. We're just borrowing it. If there is any damage, we will use the class fee to compensate."

Since Li Yuanling and Wang Mengmeng's mother Ji Xiaomeng met in Liang Yuan's dormitory, they have made an appointment to have dinner several times. Because they are both technical R&D personnel, there are many common topics between them. In addition, someone is studying at Dongda University. Even if Li Yuanling knows that Dongda University cannot lose Liang Yuan, she is a mother's nature. Before she knew it, Li Yuanling was still very close to and polite to Dongda University's teachers and staff. As a result, they became good friends over and over again. However, because both of them have many scientific research tasks, there are few opportunities for gatherings, which is quite a bit like a gentleman's friendship.

Wang Mengmeng still knew from Ji Xiaomeng that Liang Yuan’s mother was actually the chief engineer of Nanhu Science and Technology Park.

"It's not a problem whether it's bad or not. The equipment on the combustion engine broke down a few days ago. My mother took someone to repair it. She hasn't come back in Lanzhou yet. My mother is not in the Science and Technology Park. How can I get a tent from the administrative department of the Science and Technology Park?" Liang Yuan said nonsense while packing his notes.

The two of them had just talked a few nonsense, and a rumble of wheels crushing the ground came from the corridor. After a moment, the classroom's cross-open door was pushed open. Physics class representative Weng Jian and several students walked in with a large activity lab table.

Originally, when I was working in more complex physics laboratories in the previous juvenile classes, I went to the laboratory of the Headquarters of the University of Tokyo.

Due to funding reasons, the entire Dongda University only has a large physics laboratory with complete teaching and research equipment. Academicians and graduate students in Dongda University who are engaged in scientific research, undergraduate-related majors at Dongda University, and junior classes. This large laboratory has long been overwhelmed in terms of use time. In addition, Liang Yuan's enrollment for this teenage class has expanded, and this conflict in usage time has become increasingly fierce. Zhao Yinong once had an extremely headache on this issue.

However, the difficulties of the youth class no longer exist with the arrival of a rich man. After the Shangri-La Foundation was established, Liang Haiping only participated in the foundation's creation stage. After the foundation was on track, Liang Haiping put the foundation under the Joint Trust in Shenzhen and found an operation team from Singapore to be responsible for the daily operation of the foundation.

In addition to dealing with the matters of Dongda University, the foundation's main job is to cooperate and communicate between Fengyuan Trade and Trade, Shenzhen Development Bank, and domestic medium and small OEM enterprises, which are responsible for the business of Germany.

Although Liang Haiping no longer works as a Shangri-La Foundation, he emphasized at the handover to Liu Tao, the head of the operation team, that his nephew was studying in the Youth University Youth Class. The main business of Shangri-La Foundation in Northeast China is to create the best learning environment for the Youth Class under reasonable circumstances.

Liang Haiping even made it clear that the reason why Shangri-La Foundation sponsored Dongda University and Liang Yuan studied at Dongda University was a decisive factor. Otherwise, there would be more universities across the country with stronger scientific research capabilities than Dongda University. Even if a big money like Shangri-La Foundation goes to Tsinghua University, Peking University will still be treated as a guest of honor.

Millions of dollars a year are invested to create a good learning environment for his nephew? Liu Tao was so stupid at that time that he heard it. He had seen many wealthy bosses in Singapore, and he would usually send the next generation of education to first-class private schools. He had never seen anyone who chose to transform a comprehensive university.

Of course, the group of geniuses in the youth class can only be produced by a large population like the mainland. Not to mention a small place like Singapore, there will be no more than five countries on the entire planet that can meet this condition. Since the economic capacity is abundant, there are such talents in the family, so it is reasonable to devote their efforts to cultivate them. After the shock, Liu Tao slowly straightened out the reasons for the matter.

Liu Tao dared not neglect what the boss emphasized so much. While secretly stumbled on Liang Haiping's big move, Liu Tao was responsible for the matters between Dongda University and Shangri-La. As a result, the learning conditions and living environment of the junior class have greatly improved, and the large test bench for this activity was imported from the United States after Liu Tao learned that Dongda University Physics Laboratory was overwhelmed.

Unfortunately, someone's time in the teenage class has not been more than one semester, so he would not notice such inconspicuous improvement. Liu Tao's charming eyes were completely thrown to the blind man.

Weng Jian skillfully turned off the small motor that assisted the movement of the test bench, then connected it to the fixed power supply in the classroom, and took out the relevant tools of the experiment from the cabinet under the test bench one by one with several classmates.

"Today, in addition to observing the superfluidity of helium, students will also see the high-temperature superconductor physical substance - yttrium barium copper oxide compound, which was obtained only two years ago in the scientific community."

Zhao Yinong waved his hand and wrote down the molecular composition of yttrium barium copper oxygen compound on the blackboard - YBa2Cu3O6.

"As for the magnetic levitation test I mentioned with my classmates last year, there was a little accident, but this accident is a good thing. The hospital is negotiating with its neighbors, Nanhu Science and Technology Park and Nanhu Park. It is planning to build a science-popular low-speed magnetic levitation tour line in Nanhu Park. If nothing unexpected happens, there will be results this year."

"In the future, students may not have to start the 'Road 11' when they go to the Dongda Canteen for dinner. They can choose to take the slow magnetic levitation bus to the canteen." Zhao Yinong drew an extremely attractive big cake.

Coaxing..., in a blink of an eye, the classroom was in chaos.

"Dean, is it true or false?"

“When will it be built?”

"I haven't heard of any university at home and abroad. Will it become the only one in the world after our Dongda University is built?"

"Xiaoyuan, what the dean said is true and false. Why do I feel like I'm dreaming? I heard from my mother that the world's only magnetic levitation test line was built in Japan last year. This thing is the forefront of technology. Can our school do it? How much do you know about this? Tell your brother quickly." Wang Mengmeng immediately grabbed Liang Yuan and tried to get some insider information.

"Mengmeng, I swear, I don't know anything about this." Liang Yuan said with a wry smile.

Liang Yuan’s words are a truth that is not adulterated at all. Liang Haiping arranged the construction of a small magnetic levitation test line at Dongda University.

Due to Liang Yuan's unusual persistence in magnetic levitation technology, Liang Haiping also attached great importance to magnetic levitation technology. Especially after participating in the intercity maglev project across the east and west half of Berlin through the unified locomotive consortium of Democratic Germany, Liang Haiping also increased his interest in magnetic levitation technology itself.

Through the years of being in charge of large-scale railway vehicle production institutions, Liang Haiping has known that the limit of high-speed wheel rails is basically around 400 kilometers per hour. After exceeding 400 kilometers per hour, although there are no technical obstacles in wheel rail technology, its economical and maintainable nature are as bad as a disaster.

The Northeast Locomotive Factory has made a very rough estimate of the operating costs of two high-speed railways. Without considering other factors, the magnetic levitation technology only saves the regular replacement of train high-speed wheel pairs, and it is expected that the annual maintenance costs will be calculated at a scale of 10 billion.

It is precisely because of this that Liang Haiping, who regards high-speed railways as his goal in life, pays extra attention to the introduction and promotion of magnetic levitation technology.

Not long ago, after the East and West German governments reached an agreement to build a magnetic levitation intercity railway spanning the east and west half of Berlin, Liang Haiping immediately commanded the Northeast Locomotive Factory and the Democratic Germany unified locomotive consortium to sign a cooperation agreement on jointly developing and developing low-speed magnetic levitation trains.

Considering Liang Yuan’s preference for magnetic levitation technology, Liang Haiping simply built this small route with a very strong experimental color on the campus of Dongda University. With the huge number of traffic posts and traffic lights on the campus of Dongda University, the verification low-speed magnetic levitation with a speed of more than ten kilometers per hour is still very useful.

The construction of magnetic levitation test lines was led by the Shangri-La Foundation to negotiate with Dongda University, which coincided with Zhao Yinong, who planned to conduct magnetic levitation scientific research samples. In addition, the administrative department of Nanhu Science and Technology Park, who came to hear the news, and He Yunwei, who was responsible for the Lego Water Playing Park project, the test lines representing high-tech were quickly stuffed into the tour function.

The people on several sides are in full swing. Before the matter came up with a definite outline, no one came to Liang Yuan to make any decision, which eventually led to someone's ignorance of this very cool thing.

"Xiaoyuan, you have to have some snacks for this matter. If you have any latest news, you must notify us as soon as possible."

"Okay, I'll go find out the news as soon as my mother comes back." Liang Yuan said with a smile.

While the two were talking, Zhao Yinong sorted out the relevant instruments and began to demonstrate the superconductivity of yttrium barium copper oxide compounds at low temperatures.

Although the term superconducting sounds extremely high-end, the real superconducting materials seem extra simple. It is more appropriate to say that yttrium barium copper oxygen compounds are more like ceramics than metals.

The blue-gray rod-shaped yttrium barium copper oxide compound in Zhao Yinong's hand looked no different from a stick made of a building blue brick. With protective gloves, Zhao Yinong half-filled yttrium barium copper oxide compound into the water-like liquid helium. After a moment, he connected to a special detection device. As expected, the resistance was zero.

Compared with superconductor resistance tests that have no ornamentality, the superfluidity of liquid helium is much more interesting. Zhao Yinong, who is well aware of the essence of popular science, is the primary focus. Before the demonstration of liquid helium superfluidity, he first created a very ornamental "helium knife fountain" to attract the students of the junior class to be interested in low-temperature physics. After all, the future major choice of the junior class will face all departments of Dongda University. Even if Zhao Yinong likes any good seedlings, he will have to choose the low-temperature physics department to become a voluntary choice.

The fine-mouth bottle, the emery, the strong light source, the liquid helium container that was rising in the white mist. Zhao Yinong turned on the light source, and a beam of strong light passed through the bottom of the fine-mouth bottle placed in the liquid helium solution. A liquid helium fountain several centimeters high suddenly appeared on the top of the fine-mouth bottle.

Liquid helium can be said to be the purest liquid in the entire universe. The liquefaction conditions at the lowest temperature in humans are guaranteed to the purity of liquid helium itself. It is precisely because of this that liquid helium appears to be extra transparent in human vision, far from comparable to clean water in nature.

As the liquid helium fountain became higher and higher, a beam of sunlight from the outdoors just passed the top of the liquid helium fountain. The golden light turned around in the pure liquid. In a blink of an eye, countless colorful lights radiated from the top of the fountain, accompanied by a large amount of volatile white mist. For a moment, the near the experimental platform seemed like a paradise of Yaochi and a fairyland on earth.

"Damn, it's so beautiful." Wang Mengmeng said something swearing.
Chapter completed!
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