Wu Wei didn't notice that it was already about to start class at this time. This class is a physics class, and the old professor Zhang Weidu is standing on the podium, looking at him coldly.

All the students sat down in a regular manner, waiting for the old professor Zhang Wei to preach, but Wu Wei got up to leave the classroom.

In Zhang Weidu's class, no student at Normal University dared not to give face. Because Zhang Wei is a well-known physicist in China, he is highly respected in Normal University and even in China. Moreover, Zhang Weidu is one of the four famous supplements of Normal University, and his nickname is cold-blooded - which makes students frightened.

It means that if you fail the exam, don't even think about any situation, even if the principal comes to help you intercede, it is not good.

Therefore, the students are very afraid of Zhang Weidu.

Zhang Weidu looked at Wu Wei coldly and said, "Your name is Wu Wei, right? I remember you, your past grades are average." I took a week off last week and didn't show up for class. If you don't have a good class now, what are you going to do?"

"I want to go to the library and find some information. Wu Weidao.

"If you want to know anything, just ask. Ma Weidu said.

"No! You can't!" Wu Weixin said: "I can't touch the attributes from you! If I find out all your physical attributes, then I won't be a sinner, and I will make a good physics expert a physics idiot." ”

However, when Wu Wei's words were heard in Zhang Weidu's ears, the meaning changed, "You say I can't do it? In Huaxia, there are not many people who dare to say this." Among the young people, you are the first. ”

The boys at the bottom were all angry when they saw Zhang Wei, and they all gloated.

"Haha...... Cold-blooded Lao Zhang is angry! Wu Wei is going to suffer!"

"Wu Wei's physics class this semester will definitely have to be retaken. ”

"What's the make-up exam, you must fail the course until you graduate. ”

"Wu Wei's head is also in the water, and the cold-blooded old Zhang dares to contradict it!"

Wu Wei didn't mean to contradict Zhang Weidu, he still respected Zhang Weidu very much in his heart. It's just that he has subtext, and he can't say it, and he can't explain it to Zhang Weidu.

Wu Wei smiled awkwardly, unable to explain, so he had to say: "Professor Zhang, I have taught myself all the knowledge you want to teach." I said you can't, it's not that you can't learn. It's just that the pace of your teaching is too slow, not as fast as my own self-learning. ”

"Oh, really?"

Zhang Weidu looked at Wu Wei with a straight eye, thought for a while, and said, "Then I'll test you, what we want to learn today is to measure the mass of the earth." You say that you have mastered everything I want to teach, so tell me what you need to do to measure the mass of the earth. ”

"It's easy!"

Wu Wei took the chalk and said: "To measure the mass of the earth, first we need to measure the constant G of gravitation, and we can measure a gravitational constant with a simple experimental device......

Whew......

Wu Wei drew a sketch of the experiment on the blackboard, which was two small balls and a weighing rod.

"This experiment is one of the most classic experiments in the history of physics, the Cavendish torsion scale experiment. I used this experimental setup to measure the gravitational constant G, and then calculated the mass of the earth with G and the mass of the experimental sphere......"

After talking about the method of calculating the mass of the earth, Wu Wei said: "Not only the earth, but we can also calculate the second cosmic velocity of the earth from the mass of the earth......

Wu Wei gave a series of explanations, and finally came to the conclusion that the second cosmic velocity of the earth is: 11.2km/s.

"This speed is the minimum speed at which a satellite can break away from the Earth's gravity and enter space......

That's it.

The whole classroom was silent, Zhang Wei listened to it with relish, and the students were fascinated.

"Good good ......"

When Wu Wei put the chalk back on the table, Zhang Weidu was the first to applaud, and then the students below also applauded in admiration. The boys were very jealous of Wu Wei, but Wu Wei's explanation just now convinced the students. Because, they all listened to it, and they listened to it with relish, and they understood all the knowledge points in it.

This is a rare occurrence in a university classroom. Because most of everyone's minds are not focused on studying.

Zhang Weidu showed a rare smile on his face, "Wu Wei! This is the content of my class, and you have finished it in a while." The knowledge points are very well controlled. Boy, would you be interested in being my teaching assistant?"

"Hiss......"

When the students below heard this, they all took a breath of surprise.

The olive branch thrown by Zhang Weidu is what many people dream of. If he can become Zhang Weidu's teaching assistant, there will definitely be no problem with Baoyan, and it is even possible to stay in school.

The classmates all looked at Wu Wei with envy.

Wu Wei grabbed his hair, thought for a while, and said, "Elder Zhang, I don't want to be your teaching assistant for the time being, I'm not qualified enough now, and I'll think about it after I finish my self-study and integrate my knowledge." ”

Teaching assistants are responsible for part of the course's teaching and tutoring, Q&A, homework correction, tutorial classes, laboratory classes, internship classes, organizing classroom discussions and other teaching work. These things are too much of a waste of time, and Wu Wei doesn't want to be tied up.

"Good! modest and cautious! Boy, I am optimistic about you. Zhang Weidu looked at Wu Wei more and more pleasing to the eye, "Aren't you going to the library, go quickly, don't waste time." ”

"Thank you, Mr. Ma. After speaking, Wu Wei left the classroom openly.

As soon as Wu Wei left, the students in the classroom immediately began to discuss.

"Wu Wei is not stupid, Zhang Lao asked him to be a teaching assistant, but he refused!"

"That's called retreating as advancing, you didn't look at Zhang Lao's eyes at Wu Wei, it was all appreciation. I feel like I'm going to marry her granddaughter to him. ”

"When did Wu Wei become so powerful! In the past, he barely passed the professional class. ”

......

"Silence!" Zhang Weidu snorted softly.

Suddenly, the whole classroom fell silent.

Zhang Wei can indulge Wu Wei, but it doesn't mean that he can indulge other students.

Wu Wei can skip class openly, while others have to stay in the classroom honestly. What is a gap, this is a gap.

Wu Wei got out of the classroom and went straight to the library.

However, before Wu Wei could reach the library, his phone rang.

"Brother, it's been a few days since I came back, and you haven't come to teach me a lesson. Lin Yuyan's voice came from the phone.

Wu Wei's eyes lit up, "Brother is free now, I'll go over immediately." ”

"Now, okay, I'll get ready! No, I'll wait for you at home. Lin Yu flue.

Wu Wei was going to go to the library, but he changed his mind for the time being, and he wanted to use Lin Yuyan for an experiment.

Wu Wei took a taxi and came to Lin Yuyan's house.

"I should buy another car when I have time, it's really inconvenient to not have a car. Wu Weidao.

With money, the mind changes. When Wu Wei had difficulty eating before, he never realized that it was inconvenient to have no car.

Wu Wei had the key to Lin Yuyan's house, went upstairs, and he opened the door directly.

"Uh...... Am I on the wrong track?"

The curtains in the room are all blocked, and the small pink lights are turned on, and the atmosphere is a little ambiguous.

Wu Wei was stunned, thinking that he had made a mistake.

"Brother, you're here!"

Lin Yuyan jumped out of nowhere, she was dressed in a pink and white cosplay suit, with two rabbit ears on her head, and the legal little Lori became a rabbit ear girl......