The top-notch movie queen wears books, disguises herself as a man and is handsome all over the world

In the audience, Yang Qingyun couldn't help but sigh, "Sure enough, freshmen like us shouldn't come to such an occasion. Even Senior Zhen Wei can't answer questions. Professor Jiang really overestimates us."

Jiang Zhihan nodded in agreement: "Although Professor Jiang has combined the theoretical knowledge with illustrations and videos to make it easy for us to understand. It is wonderful, but the theoretical knowledge is too profound. Senior Zhen Wei can only answer the first question." It’s so awesome, I don’t think anyone here can answer it.”

Yang Qingyun also nodded in agreement.

After another minute passed, no one dared to raise their hands this time. Professor Jiang looked through the open class list: "If no one stands up, then I will just randomly call the names. Let me see, there are no students from the physics department today." How much? It seems that students in the physics department need to practice their hand speed in grabbing classes."

A serious physics academician spoke half-jokingly, which eased the tense atmosphere in the classroom. However, the students in the physics department were crying out for injustice. They had tried their best to grab the class.

Professor Jiang flipped through the list, and then called out a name that was not on the list, "Qin Jingyu, a good name is yours. Please, please, student Qin Jingyu, please get up and answer the question I just raised."

Qin Jingyu, who was sitting invisible under the stage: "..."

Professor Jiang, are you sure you called people according to the list?

Obviously not!

The slightly smiling look in Professor Shang Jiang's eyes seemed to say, "Let me test whether you have made any progress in studying with him these two days."

Qin Jingyu immediately realized that Professor Jiang was going to dig a hole for her and stood up.

Gu Huai also handed the microphone to him with a smile, as if he was happy to see the duel between these two big guys, not just Gu Huaiyu.

Even Professor Zhang and the others are like this. If Qin Jingyu is really the mathematical genius they suspected, this open class will definitely become lively.

And everyone else in the audience.

"He is Qin Jingyu."

"He's quite handsome."

"It is said that he is a freshman, but he studies well."

"It's no use studying well. Zhen Wei didn't even answer it, let alone his first year in college."

The physics department next to them heard them say, "Hey, you are not from the physics department, right?"

"Ah, no."

"That will make sense."

"Why do you say that?"

"Although Qin Jingyu is a freshman, he is quite awesome."

"Really?" They didn't believe it.

When Yang Qingyun and Jiang Zhihan saw Qin Jingyu being called up to answer questions, they couldn't help but feel worried for her.

Although they privately called him Qin Shen in the class, if they couldn't answer, wouldn't they fall off the altar? It was related to the honor of their physics class.

Zhen Wei naturally saw the young man standing up in the front row. He was Qin Jingyu, the freshman who got perfect scores on the challenge paper. He looked like this. No wonder he was a nymphomaniac in the dormitory every day.

Qin Jingyu held the microphone, and Jiang Yuantao raised his hand to signal her to answer the question.

Under the gaze of everyone in the classroom, she answered calmly: "As for Professor Jiang's first question, why is space fictitious? The only thing that can define our four-dimensional space-time is the world line. My answer is the same as that just now. Just like Senior Sister Zhen Wei."

Zhen Wei was stunned for a moment, staring straight at Qin Jingyu.

"As for Professor Jiang's second question, general relativity describes how the geometric structure of these world lines constructs four-dimensional space and time. These world lines represent objects, and describes how these objects bend the world lines to create time and space. The world. The points in the white space between the lines have no physical meaning because they cannot be related to the events of any physical world line..."

The principal, Zhang Liangan and others nodded appreciatively after hearing her logical and clear answers. At the same time, it also subverted everyone else's views on the young freshman in the classroom. The smoother she answered, the more excited she became. I feel like this, is this the charm of a great scholar?

But the question is far from over. Professor Jiang continued to ask: "String theory believes that matter is composed of one-dimensional rings. How do you think that rings are defined in ten-dimensional space-time?"

Qin Jingyu thought for a few seconds and then replied: "That's because four of the dimensions are the four-dimensional space-time we see, and the remaining dimensions are compressed..."

The professor and classmates were stunned by the smooth questions and answers, which were as exciting as a live defense or a debate.

Before they could think carefully about Qin Jingyu's answer, Professor Jiang's next question came out.

Jiang Yuantao: "Yes, but what if we presuppose the existence of space-time where string motion occurs?"

Qin Jingyu answered fluently: "The space-time where string motion exists exists. Therefore, like Newton's absolute space-time theory, the theory is a background-dependent theory. Professor Jiang has answered this, I also want to ask you a question."

While she was answering the questions, she was puzzled by some of the questions.

When everyone in the audience heard this, they were instantly surprised and had to admire this calm young man for actually daring to ask Professor Jiang questions.

Jiang Yuantao became interested, "Classmate Qin, please tell me?"

Qin Jingyu spoke unhurriedly: "I know that the theory in physics is only about objects and their quantum properties at the Planck size. And it is known that the size of the upper string depends on the magnitude of the string tension.

If the string tension is very small, the string will exceed the Planck size by a thousand times. And there are no restrictions on the actual size of the string tension, it is an adjustable parameter.

But Professor Jiang, does the loop quantum gravity theory really only involve the theory of space and time? "

After Professor Jiang heard this question, he was stunned. He changed his calm and calm attitude and began to think about this question. Even Zhang Liang'an and others looked at each other. They were actually asked by Qin Jingyu about the string ring theorem.

Seeing Professor Jiang's expression of confusion and thinking, Yang Qingyun and others became excited, "I'll go, I'll go, right? Qin Shen's question actually stumped Professor Jiang?"

Jiang Zhihan: "Oh my god, it's so exciting. It's like listening to a debate competition. Qin Jingyu is so awesome."

The companions around Zhen Wei couldn't help but excitedly said: "Is Qin Jingyu challenging Professor Jiang? It's so exciting."

Even the others were agitated. What happened? A freshman physics student stumped Professor Jiang. It was impossible, right?

However, their questions and answers just now were indeed exciting, and they could answer so many questions raised by Professor Dejiang. This person named Qin Jingyu is indeed awesome!

Only Qin Jingyu knew that this question was just a temporary confusion for her, and it was almost impossible to stump Professor Jiang.

Sure enough, after waiting for a while, Jiang Yuantao said: "The question asked by Qin Jingyu just now is a good question. The loop quantum gravity theory currently known by research around the world only involves the theory of space and time.

We do not discuss the category of objects studied by quantum mechanics. It is a background-independent theory that can accurately calculate many problems of gravity theory. Unlike string theory, which can only draw conclusions indirectly by adding infinite possible results. "

Qin Jingyu: "Professor Jiang, can you explain it more carefully? I don't think other students may understand it."

Other students in the audience: You don’t have to think about us so much. It doesn’t matter whether you understand or not. The main thing is to see the swordsmanship between you and Professor Jiang! ! !