"Okay, students, that's it for today's class."
In the lecture theater, Xiao Yi said to the many students present.
Even though so much time has passed, the number of students who come for his reputation is already quite small. However, even so, more and more students come for his good lectures. Therefore, the number of students who come to listen to his lectures is still full.
"Of course, this is also the last class of the semester."
"Then you will have to face the final exam."
"I'd like to remind you that this exam will be more difficult."
Xiao Yi said with a smile, he never thought that one day he would be able to come and talk to these students about the difficulty of the exam.
Think about when he was an undergraduate...
Well, he didn't experience much of this kind of thing back then. After all, he hadn't been in undergraduate school for long, let alone exams and so on.
As soon as they heard what he said, a bunch of students in the audience said "Huh?"
Xiao Yi didn't know whether to laugh or cry, and said, "Those of you who come here to take advantage of the class, just stop. I'm not giving you questions."
Those students all laughed.
Many of them missed every class, and for a while they forgot that they were not Hua Loo-Keng Class students in the first place.
Some of them even have no number theory classes this semester, so they can't even talk about taking the number theory exam.
Of course, Hua Loo-Keng Class's students all looked embarrassed.
Even Xiao Yi said it was difficult, so it must be really difficult, right?
A student asked at this time, "Teacher Xiao, you didn't give the question yourself again, did you?"
Xiao Yi chuckled, "Of course I came up with it. After all, I am leading your number theory class now, so I must have come up with the question."
"Huh?~"
Ever since, these Hua Loo-Keng Class top mathematics students all cried out.
They have not forgotten the situation of the junior high school entrance examination.
When they take the mid-term exam in the early stage, they are tortured. Especially, the questions in the mid-term exam make them look very simple, but in fact when they actually do it, they will find that there are quite a few difficulties or details that can make them stuck, and they need to use their thinking to find a solution.
It can be said that solving this kind of problem gives a strong sense of accomplishment and it feels good to do it. However, considering that this is a problem to be solved during the exam, it is a headache.
After all, exams are time-limited.
This can also be regarded as a drawback of the exam. Some students cannot complete the questions within the exam time, but given enough time, they can get full marks on one paper. However, some students can complete the questions within the limited time of the exam and get high enough scores, but they cannot get full marks.
Which of these two types of students is better?
For exams, of course the latter is better, but for scientific research as a whole, the former is better.
After all, in real mathematical research, time is not important, like Zhang Yitang, that is, after a lifetime of research, the results are finally achieved.
A hundred years of life, success in a short period of time cannot explain much, especially in the study of mathematics.
However, for these young students, it is still very important to get high scores in the exam. Even Zhang Yitang was a top student who was able to get into Shangjing University when he was young, so the test scores still speak volumes about his strength.
Looking at these howling students, Xiao Yi smiled.
"Then, teacher, can you tell us the key points of the exam?"
One student refused to give up and asked again.
Xiao Yi spread his hands and said, "I didn't bring a book, so I don't have to think about the important points."
Ever since he didn't bring books with him in the first class, he realized that it didn't matter whether he brought them with him or not, so he never brought any books with him throughout the semester.
Probably he won't be able to bring books to class anymore.
When they heard what he said, the students at Hua Loo-Keng Class once again showed helpless expressions.
Not like this!
"Okay, you Hua Loo-Keng Class, don't think about focusing on the key points. If you want to develop in number theory in the future, there will be no focus on it. You must have a thorough understanding of all aspects of number theory."
"If you don't want to go further into number theory, I also think you should have a deep enough understanding of number theory as a whole. You have to know that mathematics seems to have a lot of refinements, but in fact all directions are a whole. The broader your knowledge, the more conducive it is to your future research. Therefore, why our mathematics majors generally pay more attention to Shing-Tung Yau Math Olympiad is because Qiu Sai has higher requirements for knowledge."
"Speaking of Qiu Sai, you can register for it next semester. Regardless of whether you can win a prize or not, it's still good to give it a try."
Xiao Yi said.
Registration for the Qiu competition starts in March every year, and the finals are around October.
So generally speaking, freshmen cannot participate in the finals until their sophomore year.
When he was an undergraduate, he was invited by other students to participate in such competitions, but in the end he refused.
Fortunately, he didn't agree. Otherwise, in the second semester, his classmates would have started their sophomore year, and as a result, he would have become a doctoral student, and his classmates would have been confused.
After hearing his recommendation, most of the students present became eager to try Qiu Sai next semester.
At this time, the get out of class bell finally rang.
Xiao Yi waved his hand and said, "Okay, this semester's class is over. Thank you, classmates, let's get out of class!"
There is no need for the squad leader to shout to stand up, just relying on tacit understanding.
The students present stood up one after another and bowed. "Thank you for your hard work, teacher!"
Xiao Yi waved his hand and left the classroom.
The students left in the classroom began to discuss what class Xiao Yi would take next semester.
The students of Hua Loo-Keng Class also want to know whether Xiao Yi will continue to teach them other courses next year.
However, these are not things Xiao Yi needs to consider. Anyway, he only teaches one class every semester and it will never change.
I returned to my office, looked at what my three graduate students were doing, and then returned to my office.
But not long after we sat down, their dean Tang Fucheng arrived.
"Professor Xiao, is the class over?"
"Dean Tang." Xiao Yi nodded. "I just finished, what can I do?"
Tang Fucheng smiled and said, "Good news, your professor level has been upgraded to level one."
"Oh! This is something."
Xiao Yi raised his eyebrows and asked, "Wasn't I level four before?"
Tang Fucheng said with a smile, "You still need to ask this question? To be honest, if you hadn't applied yourself, you would have been a first-level professor."
"Then when we were reviewing some time ago, we found that you were actually a fourth-level professor, so we reported it directly to the top, and now you have been rated as a first-level professor."
College teachers are professional and technical positions, and their job levels are divided into 13 levels.
The level of professors is level 1-4.
Fourth-level professors are those who have just been rated as professors, while first-level professors are the top ones. Generally speaking, only academicians can be rated as first-level professors. First-level professors who are not academicians are too few.
However, for a scholar like Xiao Yi, only a first-level professor can match his status.
"That's right." Xiao Yi nodded clearly. "I really forgot about this matter. Thank you Dean Tang."
Tang Fucheng waved his hand. "It's okay, it's good for our college."
It would be good for the college to have one more first-level professor. Although they are all professors outside, of course their units are very clear about the difference.
"In addition, I also want to ask you, next semester, our plan is to let you take the real variable function of Hua Loo-Keng Class, a sophomore next semester. Are you okay with this? The real variable function is still a bit difficult for those students. You teach it well, so I let you take it."
Xiao Yi waved his hand. "No problem."
"That's good." Tang Fucheng smiled, but then asked, "Then... do you want to consider teaching one more class? Just teach number theory to the students in the ordinary class?"
Xiao Yi twitched his lips, are you waiting for him here?
He waved his hand and said, "How about we let them send back the first-level professor? I'd better be a fourth-level professor."
Tang Fucheng had no choice but to say quickly, "Okay, okay, I won't say any more. There is no way to retire from this professor level. Young man, you are a bit ambitious."
Xiao Yi spread his hands and said, "I have become Chief Designer now, and I am already very motivated."
This time Tang Fucheng twitched the corner of his mouth and finally said, "Okay, just pretend I didn't say anything."
But soon he became curious again. "But, having said that, what's the progress of your Super EAST now? Is there really a chance that nuclear fusion can be realized?"
Xiao Yi smiled and said, "If you think it can be realized, then it can be realized. If you think it cannot be realized, then it cannot be realized. No one can say for sure about things like nuclear fusion."
"Tsk, then I still hope it can be realized." Tang Fucheng said, "If this thing can be realized first in our country, that would be awesome!"
As he spoke, he shook his head and left Xiao Yi's office.
Xiao Yi smiled softly.
I don't know if it can be realized, but if it can be realized, it will definitely only be realized in China first.
[Perfect Engineering] activates.
The huge UO structure fusion device appeared in his mind.
With a thought, the UO Device in my mind started to run.
Perfect Engineering allows him to see "with his own eyes" what changes will occur inside the device after it is run.
For example, the precise magnetic levitation fluid control furnace specially used to produce MHT-7 was also built by him using Perfect Engineering.
Soon, current was passed into the simulated HTSC-1 superconducting circuit, forming a strong magnetic field, and after deuterium and tritium fuel was injected, heating began.
Under various heating devices, the fuel temperature is quickly heated to hundreds of millions of degrees.
The deuterium-tritium fusion reaction begins. Under a magnetic field strength of 25T, all charged plasma is well controlled and does not touch the inner wall at all.
Only the neutrons that are constantly produced, because they are not controlled by the magnetic field, continue to hit the first wall material.
However, the first wall material at this time is not only MHT-7. What can be seen is that some small holes have been specially carved into the MHT-7 wall material.
In these small holes, some metal liquid is adsorbed.
These metallic liquids are liquid lithium.
If you want to achieve nuclear fusion on earth, there is another key issue, and that is tritium.
There is a large amount of deuterium in seawater, but not a large amount of tritium. Of course, perhaps after a certain country discharges nuclear sewage into the sea, the tritium content in seawater may be increased a little.
However, the extraction of tritium is quite troublesome and costly, and is much more complicated than deuterium.
Therefore, it is obviously not good to continue to use externally extracted tritium to maintain nuclear fusion.
However, perhaps it is the Creator's ingenious design that allows tritium to be generated when neutrons bombard lithium, thus achieving tritium self-sustainability in the nuclear fusion reaction.
In the past, controllable nuclear fusion scientists thought about how to create a tritium-breeding lithium blanket to neutralize neutrons by covering the surface of the inner wall of the nuclear fusion. As for liquid lithium, it is also a good choice.
However, because liquid lithium may react with inner wall materials at high temperatures, some ordinary graphite materials, or carbon fibers, etc., will react with lithium at high temperatures.
However, for diamond-like carbon materials, this reaction can be suppressed.
For example, a diamond-like carbon film can inhibit the reaction with liquid lithium. However, this material may still react with liquid lithium due to structural changes under extreme conditions such as high temperature and radiation.
However, MHT-7 does not have this problem. MHT-7 itself is also a material similar in structure to diamond, and its internal structure brings more stable chemical properties. Therefore, it can be regarded as optimizing the diamond-like carbon film to a certain extent, completely avoiding the reaction with liquid lithium in extreme environments.
Because of this, Xiao Yi can add liquid lithium into this new structure without any scruples.
The liquid lithium passes through the internally designed channels and finally enters the reactor. When high-energy neutrons hit the surface of the liquid lithium, a reaction immediately occurs to generate tritium, which will continue to be added to the nuclear fusion reaction to maintain the progress of the fusion.
By controlling the amount of liquid lithium injected, the self-sustaining rate of tritium can eventually be maintained at 1, allowing the nuclear fusion reaction to continue continuously.
And this is also an optimization of the UO structure that Xiao Yi has made during this period of time.
Of course, it's not just that. In other aspects, UO structure is also basically perfect.
Some of the problems that existed before have now been resolved.
Even, under the simulation of Perfect Engineering, this UO structure can already generate electricity!
The final conversion efficiency reached 62%!
Not only did it achieve the efficiency of his plan, it even exceeded it by two percentage points!
It can be said that if he was still hesitant about whether nuclear fusion could be realized before, now he only has one sentence: if it cannot be realized, he will just eat it.
"After this year is over, construction will officially begin."
By that time, it will be considered as gradually becoming clear.
At least his UO structure will definitely show that his research on nuclear fusion has reached a very in-depth level, and I am afraid it will attract a lot of attention.
However, fortunately, the King of Understanding in the United States has just taken office, and there is a high probability that he will not pay too much attention to this matter for a while.
Well, it's a good time to grow.
"Get off work!"
After drinking a cup of tea, I will take a good rest until the end of the year.
In addition, he has to prepare a smaller UO structure to prepare for the time.
After all, not everyone may agree that he wants to build a new fusion device larger than the tokamak planned to be built by ITER.