The class was still going on, but Xu Mang could no longer resist the drowsiness in his head. He couldn't walk, couldn't walk away, listened but didn't want to listen. His willpower was almost exhausted at this moment, and sleepiness finally took over his entire body.

Xu Mang fell asleep while sitting.

Very fragrant, heavy and beautiful

Physical skill +1

Physical skill +1

"When using the variational principle to deal with practical problems, another common method is to approximate the general form of the wave function, and then use the variational principle to find the corresponding energy intrinsic equation." The professor said seriously: "This equation

It is much easier than the original wave equation, and the process of solving it is also "

Halfway through the words,

The professor saw a speechless scene. One student actually fell asleep while sitting down.

but

At this time, the professor suddenly felt that the sleeping student looked familiar.

Right!

Is he Xu Mang?

The professor finally remembered who the sleeping young man was. He had seen his photo several times in the journal "Nature".

By the way, why did he appear here?

oh!

The recent press conference.

"Hello!"

"Don't sleep!" Casey hurriedly pushed Xu Mang beside him and said seriously: "What's going on with you? Are you crazy? This is Professor Jeff's quantum mechanics class. You don't want to be in school

Are you going to stay?"

When Xu Mang woke up, he had a silly look on his face. He felt that he had made the two most regretful decisions in his life. One of them was to marry Xiaoman, and the other was to come to this classroom to listen to the class. This professor named Jeff,

There is no tension in the words, and they are a bit lifeless.

"This classmate!"

The professor pointed at Xu Mang and said seriously: "Can other methods be used to solve the multi-electron problem in independent particles?"

I

Damn it!

What's going on?

Xu Mang was in a daze, and then his name was called. He was a little frightened for a moment. He felt like he was back in the days when he was a bad student in high school. The teacher called his name out of the blue, and then silently walked out of the classroom and made him stand.

At this time,

All the students looked at Xu Mang and expressed deep sympathy for him. This guy must be so unlucky.

What to say

Who is this guy?

Why have I never seen him before? When did he sneak in?

wrong,

Looks a little familiar!

Almost everyone felt that Xu Mang was familiar, but they couldn't remember who he was. Later, I thought about it, maybe Oriental people have the same face.

This is the same as Xu Mang's feeling that Westerners' faces look the same. Both sides have entered into the own-race effect and the alien-race effect. Own-race faces are always easier to recognize than unfamiliar alien faces, and recognition of alien faces will be easier.

difficulty.

certainly,

There are also cross-cultural differences in face and expression recognition.

"This classmate!" the professor said again: "Come up and solve this problem, don't keep us waiting any longer."

Xu Mang shrank his neck and asked cautiously: "Can the professor repeat the question again?"

"Use other methods to solve the multi-electron problem in independent particles." The professor said: "And prove the physical significance."

After hearing what the professor said,

Everyone was stunned. If the previous question was a difficult one, then the next one was a death question.

We also need to prove the physical meaning
Chapter completed!