As for how to solve the problem of neutrino binary β decay, Xu Mang usually tossed it out casually when he took his children in his spare time, and he didn't take it seriously, just to pass the time, but who knows... Suddenly there was interest.

In fact... Because it was too difficult, it aroused Xu Mang's desire for knowledge, and after about three weeks, he finally solved the neutrino β decay problem, and the rest was experiments, but Xu Mang felt that there was no need for experiments, and calculated according to his own simulations... There will certainly be no problem.

At this point,

Hearing Xu Mang's words, all the students present were shocked, and at first everyone was not sure... After all, neutrino β decay is not a simple problem, and Ettore Majorana published a paper hypothetizing the existence of such particles, which has never been solved for almost 90 years.

It can well be imagined

How much higher is this difficulty.

But now Academician Xu actually said that he had solved it, this shock cannot be described in words, and he can finally see the miracle of Academician Xu with his own eyes.

"Damn..."

"Wouldn't it?" He Weijie's friend said in horror: "I didn't expect to come to the right place today... I didn't live up to the expectations of these few days, and I have the capital to brag about going back this time, after all, I am also the one who has witnessed Academician Xu create legends!"

He Weijie didn't speak, but his emotions were similar to those of his friends, and he was more shocked than a desire for the unknown, but he was still a little unconvinced... Humanity spent ninety years on this problem, and suddenly it was solved one day.

"About this formula..."

"I'll talk about that later, first of all, according to the Standard Model, two neutrons in the nucleus will be converted into one proton and two electrons, and two electrons will be emitted, and two electrons will be emitted, which is called double neutrino β decay. Xu Mang said indifferently: "The decay of double neutrino β is very rare, which is due to the ultra-long half-life of the β isotope above 1020 years. ”

"So..."

"How do I find the right isotope?" Xu continued: "Simulating the decay of tin-100 into an adjacent element indium-100 on the periodic table... Both elements possess the same number of protons and neutrons, with tin-100 having 50 protons and indium-100 having 49 protons. ”

"Accurately calculating decay requires not only an accurate simulation of the structure of the parent nucleus and daughter nucleus, but also the interaction of the two nucleons during the transition. Xu Mang glanced at everyone present and said expressionlessly: "At this time... A very precise calculation tool is required. ”

Words fall,

Xu Mang turned around and pointed to the formula on the blackboard, and said seriously: "And this is the answer... Structural problems used to model decay. ”

“！！！”

“！！！”

“！！！”

Is this such a short formula?

Now everyone looked at the direction of Xu Mang's finger, and instantly didn't know how to describe it, how much high intelligence is needed to create such a formula, at this moment... Many people have remembered a formula that only appears in rumors - the Xu Yang structure formula.

In various magazines, this formula has almost blown into the sky, and it is said that it is a masterpiece that condenses the most outstanding wisdom of mankind, but everyone can hardly see this legendary formula, but you can know that this formula must exist, because it solves countless problems by relying on the formula.

Don't...

The formula on the blackboard is the same as the legendary Xu Yang structure formula?

Just when everyone was confused, Xu Mang said with a smile: "This is just a gadget... It's not a formula that solves anything, so... As I said before, this is just a formula, the key to solving a special problem, not that you think it is the same as Xu Yang's structural formula. ”

So that's it!

But it's very, very awesome!

All the students in the audience widened their eyes and looked forward to the new content to come.

Sure enough,

Xu Mang formally explained how this formula came about.

"At a confidence level of 90 percent, the half-life is approximately greater than 1.1×1025 years... This is an improvement from the previous measurement of 1.6×1025. Xu Mang said: "This long lifetime indicates that the mass of neutrinos may be smaller, so..."

At this point,

At the back of the room, a group of professors listened with relish, although several professors were not experts in the field, but in fact, they were all interconnected, and these professors also hoped to learn something from Xu Mang's experience, after all, they lived to learn all the time.

"Strong!"

"It's too strong... This can be done by pure calculations and simulation experiments to reach a very reasonable conclusion. Fan Zhilong smiled bitterly: "But think about it, this is also a normal performance... He used to do just that, sitting alone in an office, leaning on a computer and a pen... The problem was solved in a few days and nights. ”

"Ugh..."

"The gap between us and Xu Mang is getting bigger and bigger, he only seems to be about twenty-five, right?" Professor Li Aimin said with emotion: "Alas... I remember that when Xu Mang first entered the school, he seemed to come in as a liberal arts student, and at that time I was worried that he would not be able to keep up, so I let him try to study for half a year or two months. ”

"Yes, yes, yes!"

"That's when I took classes for two weeks, and I basically disappeared after that. Zhong Yuan said: "Then he became a lecturer, then an associate professor, and finally became the deputy director of the Department of Physics. ”

Speaking of the past,

The mind is full of memories, but everyone is a little sad when they talk about it, in fact, Xu Mang did not end perfectly in Fuda, he left with flaws, at that time Xu Mang was standing in the storm circle, he left with infinite anger.

At that time, there was no one to help him, he had to solve it on his own, or it was just such a pressure... caused him to leave, and then the principal who had been taking care of him left, and since then he has severed relations with Fuda, and even the bursary fund has been revoked.

"Hope..."

"In the future, Xu Mang will have a perfect ending in Fuda!" Fang Jun said seriously.

...

On the Internet,

The small video of Xu Mang in the open class has appeared in the public eye, such as a video APP such as a certain shaking a certain hand, not to mention... The number of clicks is very high, but most of them are just shouting and something like that, and there are also some bars who try to overthrow Xu Mang's content.

And this kind of bar essence has an obvious characteristic, that is, he likes to explain everything with his own thoughts, and he does not have any scientific literacy.

"Damn... Academician Xu is so special, it's awesome!"

“66666！”

"Academician Xu, I'm going to give you a monkey!"

The Internet has exploded, and at this moment, in the open class, the students have gradually entered a dazed stage, at first everyone listened to it with relish, thinking that Academician Xu did this is simply amazing, and then... A strange change has taken place.

When Xu Mang explained how to draw on the idea of treating electrons as waves in quantum chemistry to develop a technology for simulating experiments, almost everyone had a big question mark in their heads.

"So now... We're dealing with the nucleon, not the electron, in the concept of quantum chemistry... It is possible to branch out the double-β decaying nuclei and extend them to these open shell regions. Xu Mang continued: "It has been proved that the theoretical understanding of β decay is consistent with the simulated experimental data, and then..."

He was still continuing, and seemed to be getting more and more excited the more he talked, which made the students miserable.

it!

Who am I?

Where am I?

What should I do?

I don't understand this at all! How did you talk about quantum chemistry from double β decay? And this so-called nuclear branch... How is this extended to the open shell region, and how does this theory correspond to the simulation data?

All of this was unknown to the students present.

"Holy..."

"Alas... Weijie?" He Weijie's friend cautiously asked his friend next to him, "This... Did you hear what Academician Xu was saying? How do I feel like I'm listening to a book from heaven? What the hell is he talking about?"

"I..."

"I..." He Weijie was also full of confusion at the moment, even if he was known as the genius closest to Xu Mang, but standing in front of a real genius, how small he was, he could understand the content before, but he didn't know what to say in the middle section, and now his eyes were black, and he didn't know anything.

At this moment,

The most powerful genius in the Department of Physics of Fuda was completely crushed by Xu Mang's confidence.

meanwhile

Fang Jun gradually felt a little strange, he found that many students had completely entered dementia mode in the face of Xu Mang's explanation, and could only sit there stupidly, listening to what he didn't understand at all.

If it goes on like this...

This batch of the most promising future stars is about to be ruined by Xu Mang!

"It's over, it's over..."

"Xu Mang has entered the state!" Fang Jun said with a nervous face: "He subconsciously regarded these students as a horizontal line with him, and if he continued like this... The confidence of these students was about to be destroyed by him. ”

But

There is still more than an hour before the end,

If you stop Xu Mang's lecture at this time, the reason doesn't make sense... And no one dared to stop it at the scene, not to mention that Xu Mang's identity had completely crushed all the professors, just because he was a special guest professor invited by President Zheng, no one had the right to stop it.

"Now I'm going to make a bold prediction!"

"Calculations using different neutron-free binary β decay nuclear models can differ by as much as six times!" Xu Mang pointed to the original formula, and then pointed to the piece of content on the blackboard, which reappeared, and said, "First of all, this place... is an unknown variable, and to solve this unknown variable, a new benchmark needs to be provided..."

An hour after that,

For these students, it's completely insane... For the first time, they felt that the class was so tormenting, and they clearly had the most cutting-edge scientific discoveries in front of them, but due to the limitations of their own strength, they couldn't touch it at all.

finally

Xu Mang finished speaking... These three hours can exhaust him miserably, because of the whole devotion, he has not even drunk a sip of water, hurriedly picked up the pure water on the side, poured a sip, and then he found a big problem.

Belch?

No way!

What are the expressions of these people?

......

vertex