Scholar’s Advanced Technological System

The classroom seems to be starting soon.

Pushing the back door gently, he looked at the middle-aged professor with his back to the classroom board book. The ark did not disturb him and other classmates. It did not even disturb the brothers lying asleep beside the door. He just looked for an awesome spot in the back row of the staircase and sat very low.

Inspiration doesn't come to the door by itself, you have to find it yourself.

The Ark very much agrees with what Fermie once said, thinking about why some obvious questions are obvious can help to deepen understanding of those issues that are deeply elusive.

There are precedents for this phrase, both physically and mathematically.

Previously in Princeton, if you encounter a problem that you can't understand, the Ark takes the time to give undergraduate doors several classes, or occasionally to look for inspiration in other professors' classes.

When studying Goldbach's assumptions, for example, Professor Fefferman's mathematics lesson inspired him greatly. And this is not because he spoke so deeply in class. On the contrary, all he said at the time was something very commonplace and easy to understand...

Finished the board book on the blackboard, the middle-aged professor standing on the podium cleared his voice and said.

“Quantum mechanics is a very deep discipline, and if you really go deeper into it, its existence will even upset your understanding of the microworld, of physics, even classical philosophy. Although I know my voice may be very sleep-aiding, I would not recommend you to start sleeping from the first lesson...”

There was a kind laugh in the classroom, and the canoe in the back row was not incontrovertible.

It seems that the professor is also a young scholar with a bit of a pedagogical level, at least not following the PPT preamble as soon as the textbook is opened.

However, his voice was not bright and could be a hard wound.

At least the dude sitting next to the ark hasn't planned to wake up yet.

The middle-aged professor shrugged his shoulders humorously and continued his sermons with a glance at those who had woken up and those who had not.

“We all know that the STAR-2 demonstration reactor in Haizhou for some time ago, under the command of Professor Lu of our school, succeeded in igniting, and our country's controllable fusion power generation technology was thus at the forefront of the world, becoming the only country to build a commercial reactor. ”

I was embarrassed to hear that when I was sitting in the back row listening to Ark Boat.

How can a quantum mechanic involve him?

This is not plasma physics.

However, the professor on the stage spoke quite vigorously. The students in the staircase class were obviously also interested in the topic. Even the fellow who slept perfectly beside the ark looked up sleepfully and looked at the stage.

At this point, the ark noticed that the name of the teacher in class and the phone were written on the door page of the quantum mechanics textbook beneath his arm.

Zhang Zhongqing?

Never heard...

“… According to public data, the STAR-2 demonstration reactor - or now Pangu - has an internal temperature peak of 130 million degrees Celsius, nearly nine times the temperature of the Sun's center! ”

Looking at the students who shouted in the classroom, Professor Zhang stood on stage, knowing that he had succeeded in catching the attention of the students, immediately hit the railroad while it was hot.

“At such temperatures, the general material must be unbearable. So the STAR-2 demonstration reactor in our country uses a magnetic constraint to constrain the deuterium mixture of ionized state I involved in the reaction into a closed magnetic cage. ”

“So the question is, why does controllable fusion require such high temperatures to react? Or in other words, why can't the fusion reaction be carried out at room temperature? ”

Quiet down in the classroom.

The dude sitting next to the ark whispered and whispered.

“Isn't that bullshit? ”

I happened to hear this puke, and Ark lifted his eyebrows with interest and was going to ask him what his opinion was. But before the ark opened, he continued.

“… if this can be done at room temperature, not everything can be fused. ”

Ark: “…”

“Who can stand up and talk? ”

Having swept away the classroom where no one raised their hand, Professor Zhang, standing on the podium, had to add, "This question has had its usual results. ”

Whoa, whoa!

More than half the people in the classroom instantly raised their hands when they heard the usual grades.

“I know!” asked the professor, standing up in the first row, the schoolgirl with glasses, answering quickly, "Due to the positive charge of the atomic nucleus, there is a Kuron repulsion between the nucleus and the nucleus. Only when the two atomic nuclei are close enough can strong interactive forces overcome the Kuron repulsion and aggregate the two atomic nuclei together. At the macro level, only by increasing the heat in the system and accelerating the thermal movement of molecules in the system can atomic nuclei collide together with sufficient kinetic energy for a fusion reaction. ”

“That's a good answer," wrote a random score on the roster, then the middle-aged professor cleared his voice and continued with a smile, “So here comes the question, have you thought about why strong interaction can only happen at very short distances? ”

“Because… is it a short-range force? ”

“This is the explanation for the high school physics textbook, and it's no different than not saying it," Professor Zhang smiled, indicating that the student standing up to answer sat down and continued, "You are now college students, in addition to knowing ‘what’, you should understand ‘why’. ”

“Quantum field theory tells us that particle-to-particle interactions are not hyper-ranging, but are carried out through some sort of boson as a medium. For example, electromagnetic action swaps photons, strong interaction swaps colloids or mediators, weak interaction swaps W with Z bosons... Someone might ask, what does this have to do with the range of forces we're talking about? ”

Professor Zhang turned to the blackboard and wrote a sermon.

“If scattering occurs between two distinguishable Fermiens (p + k p '+ k'), a scattering cross-section and interaction can be obtained with the approximation of Bourne as follows...”

[(p '| iT | p > = -iV (q) (2π) δ (Ep' -Ep), (q = p '-p)]

……

Who am I?

Where am I?

Looking up at the formula on the blackboard, the dude sitting next to the ark made a blushing look and wondered if he had slept through the class.

“Grass grip? Didn't we talk about nuclear fusion… what day is it? ”

He felt like he'd missed a semester of classes after only two seconds of inactivity.

Actually, it's not just him.

The person sitting in the classroom understands less than half of what Professor Zhang is saying.

When he looked at the dude next to him, Ark laughed and asked softly.

“Wanna know?”

“Think… you can understand?” The dude glanced at the ark, probably because he didn't wake up, so he didn't react to who was sitting next to him.

The Ark laughed and said, "If you want, I'll teach you. ”

Paused the chalk in his hand, Professor Zhang turned around and looked at the pussy students. The corners of his mouth curled.

I don't understand. It's normal.

Quantum mechanics itself is a difficult point in physics.

Especially when it comes to computation, it is not possible without a certain mathematical basis.

There's nothing wrong with him alone, but if he calculates it on the spot, it's not necessarily possible to calculate it before the end of the class.

“The calculation process is complicated," Professor Zhang left the chalk on the desk with his hands behind his back and smiled. "If anyone can complete the rest of the lesson, I will give him all the usual results of this lesson, and I will not use this lesson in the future. ”

Dead as quiet in the staircase classroom.

The students looked at each other.

Graduate students who come to dabble in class, they are also disgraced.

Professor Zhang shook his head with a smile, and just as he planned to keep the issue as a reflection, a voice came from the back of the classroom.

“Can I use the blackboard? ”

Zhang Zhongqing: "…???? ”