Reborn Tech Scholar

Chapter 428 Report Meeting (Third Change)

Qin Yuanqing was not wearing a suit. Although wearing a suit would look formal, he felt that a suit was too restrictive.

Therefore, at this report meeting, Qin Yuanqing wore simple casual clothes, jeans + plaid shirt, looked young and full of vitality, and did not look like the head of a world-renowned school, but more like a young CEO of an IT company. Product launch site.

There are also school leaders who advised Qin Yuanqing to wear a suit. After all, this academic report will be no small matter. It will come from well-known scholars from all over the world. The media that come here are also international heavyweight media. It is not good to wear it so casually, it will affect Mizuki’s image. It will also affect China's image.

But who is Qin Yuanqing? Qin Yuanqing is born in the 90s, and one of the labels of the post-90s is personality. He feels that the focus of the report is not on his clothes, but on the importance of the speaker and the content of the report.

Otherwise, if it were someone else, no one would listen to his report even if he said to the outside world that he was going to make a report and how important the report would be.

"Guests, science lovers, hello everyone, I am Qin Yuanqing for today's report!" Qin Yuanqing is used to such scenes, after all, every time he reports, the specifications are not too small, for such a scene Already adapted.

"Last month, I finally completed an important research on string theory, which made string theory a historic breakthrough. In view of the importance of the results, the content involved is relatively difficult, so I thought twice and didn't publish it in professional journals. Instead, hold a report meeting directly. After the report meeting is over, everyone at the scene will receive

Special issue, this special issue will publish the papers of my academic report. "Qin Yuan said with a light smile.

During this period, Qin Yuanqing compiled a total of three papers, each of which was heavyweight, enough for a special issue of "Journal of Shuimu University (Natural Science Edition)".

The scholars present all showed excitement. If you have a paper, that's good. Even if there are some parts of the report that you don't understand, you can still delve into the paper.

Although it is a pity that I did not get the paper before the report meeting, but the times are different now. After listening to the report meeting and reading the paper again, if you still don’t understand, you can also watch the video of this report meeting again.

This is the convenience brought by the development of science and technology!
In the early years, scholars wrote papers one stroke at a time, and the report meeting would be boring, with a few blackboards, and then it was like attending a class.However, modern scholars, especially those born after the 80s, are more willing to choose the form of multimedia for academic reports, combined with PPT to explain to everyone, so that everyone can understand and understand more easily.

As a standard post-90s generation, Qin Yuanqing is no exception. He also likes to use some modern tools to conduct academic reports, and the PPT he produced is quite exquisite.

Among all the scholars, the ppt produced by Qin Yuanqing is the most exquisite. I don't know how many professors have praised it as a classic to educate their students.

"As you may know, Professor Wei Teng joined the Mizuki Institute for Advanced Study because he joined hands with me to promote the development of string theory. After all, string theory has almost stagnated in the past 30 years, which is undoubtedly frustrating. "Qin Yuanqing said: "After Professor Wei Teng joined the Mizuki Institute for Advanced Study, many achievements in the field of string theory were born during this period. The previous research results related to string theory were revised, revised and improved, making string theory usher in a new era. Great development."

There was a burst of warm applause in the lecture hall, which is an affirmation of the development of string theory in the physics world during this period. After all, these achievements are obvious to all, and they are indeed much more advanced than before.

As professionals, they understand better than anyone else how difficult it is to form and perfect theoretical physics. This process is slow and takes hundreds of years.

For example, the Yang-Mills theory, after more than half a century, was finally finalized by Qin Yuanqing, which means that this theory is truly mature and complete, and it has been solved perfectly from a mathematical point of view, so that it can withstand the test of time. test.

In Qin Yuanqing's report meeting, he gave the whole report in Chinese, while his students translated in English. After all, most of the overseas scholars only understand English but not Chinese.

Although many scholars have begun to learn Chinese, there must be a process.

Therefore, Qin Yuanqing's report speed is not fast, just to allow his students to translate accurately and quickly.

Qin Yuanqing operated the page presenter in his hand, and the first page of the PPT projected on the big screen was particularly cool.

The background is a black and deep universe, and a blue planet in the starry sky is particularly eye-catching. This is the earth.

Through embedded animation processing, a U-shaped magnet appeared at the position where the earth should have appeared.

What physics or theory does this scene of a magnet continuously attracting paper clips from the earth illustrate?

This is Qin Yuanqing's skill in making PPT, which is completely different from other scholars.

The main energy of scholars is to study various kinds of knowledge. They don’t spend too much time on PPT expression, typesetting, art, etc. Based on a report topic, scholars just explain what should be explained clearly.

So people often make complaints about the PPT made by some professors. Every page is full of text, and the screen is full of text. It is true that the professor has shown all the content that should be displayed, but the eyes of the students are dazzled and their heads are swollen.

Qin Yuan said with a light smile: "Human beings have known the existence of gravity and electromagnetic force for a long time, and based on this, they have created the classic theory of gravity and electromagnetic force. Here, we would like to pay tribute to Newton and other physicists. Physics has made a remarkable contribution!"

"Later, when physicists were studying, they discovered that in addition to gravity and electromagnetic force, there are two other forces in nature, namely the strong force and the weak force. The strong force makes quarks attract each other, giving protons and neutral forces The weak force is the force generated by the radiation of the atomic nucleus." Qin Yuanqing said: "Looking at this PPT again, we use a slightly exaggerated expression to illustrate a daily example, placing a magnet close to an iron paper clip, The result is clear at a glance, the paper clip is sucked away by the magnet. This simple experiment shows that the gravitational force produced by the earth with a mass of 6 times 10 to the 24th power kilogram on the paper clip is weaker than the magnetic force produced by a U-shaped magnet weighing only a few tens of grams. So it is very Obviously, the electromagnetic force is greater than the gravitational force."

"Standing on the earth, we found that gravity is the weakest of the four forces. It is weaker than the electromagnetic force, and even weaker than the weak force. Therefore, in some knowledge point examination questions in the study career, it often appears In such a sentence, ignore the influence of gravity." Qin Yuanqing said: "However, when we rushed out of the earth and entered the ocean of stars, we discovered that gravity must not be ignored."

"Through what I just said, I basically introduced the four basic forces of physics. You may feel confused. Today's academic report belongs to the academic report of string theory. How can you talk about the four basic forces?" Qin Yuan He smiled lightly: "Okay, then let us discuss in detail the roles played by the four basic forces in string theory and M theory, and whether it is possible to unify M theory at a certain level. One or four basic forces?"

When Qin Yuanqing said this, all the scholars in the lecture hall were shocked. Knowing that the topic was coming, they all wanted to know what kind of achievements Qin Yuanqing had made, and even held a special academic report meeting. People from the Shuimu Institute for Advanced Study discussed it, but it turned out that Qin Yuanqing told Wei Teng and the others that they would not listen to the academic report, and they would not understand what he said.

Is this what people say?
We must know that Witten is a banner figure in string theory, and dozens of string theory physicists in the Mizuki Institute for Advanced Study are all internationally famous.

Although complaining about Qin Yuanqing's young people not practicing literature and morality, this aroused their curiosity even more.

"According to Einstein's general theory of relativity, under the action of gravity, space and time expand and contract. Then, if the calculation method of quantum mechanics is applied to general relativity, there will be infinities that cannot be handled by the renormalization method." Qin Yuanqing The operating pen in my hand moved a bit, and the PPT was switched immediately, and two formulas appeared on it.

"Having said so much, we will also welcome the protagonists of our report, string theory, superstring theory and M theory!" Qin Yuanqing looked calm.

Because the academic report meeting in the morning lasted for 3 hours and there was no question-and-answer session, Qin Yuanqing explained patiently and seemed calm.

"The core idea of ​​string theory is that elementary particles are not points, but strings with a one-dimensional space-extended vibration structure. We can understand open strings as spaghetti and closed strings as macaroni."

"So, now I have answered the question just now, that is, the string can eliminate infinity. In addition, the closed string transmits the gravitational force. The theoretical basis is shown in the figure. When the closed string vibrates in this way, it will become a graviton that transmits the gravitational force. This is the gravitational force The particle, which is the combination of the theory of gravity and the theory of quantum mechanics, thus predicts gravitational waves. Gravitational waves have been confirmed, and more than 1000 top scientists spent four months analyzing it. This project gave birth to the Nobel Prize in Physics Scholarship winner." At this point, photos of the grand occasion two years ago have appeared on the PPT.

On September 2015, 9, LIGO detected the first gravitational wave signal, and in the early morning of June 14, 2016, LIGO announced that two gravitational wave detectors located in the Hanford area of ​​the United States and Livingston, Louisiana At the same time, a gravitational wave signal was detected.And just last year, scientists from many countries around the world held a press conference simultaneously, announcing that for the first time, humans directly detected gravitational waves from a binary neutron star merger, and at the same time "seeed" the electromagnetic signal from this spectacular cosmic event.

It can be said that the physicists present still have deep memories of what happened not long ago.

　A total of ten updates today!Everyone support genuine!
　　
　
(End of this chapter)