The conditions are sufficient,

In the basic national policy of observing the generation of relativistic mesons, the trajectory of the meson in the magnetic field is a curve of a certain value, and the trajectory after the loss of fractional energy through the medium is 0.34T, and the slowed particle beam velocity measured by the time-of-flight spectrometer is 1.8X10^8m/s.

The requirement is to calculate the rest mass and the kinetic energy before and after deceleration, with an accuracy of two digits.

Ordinary people are basically confused when they see this kind of topic, but Xu Mang is full of great enthusiasm for it, after all, he is a professor of theoretical physics, and his specialty is this theory of relativity and quantum mechanics, and almost no one knows these better than him.

Ten minutes,

This is a conservative estimate by Xu Mang, after all, his racing computing ability has degraded so much, give a reasonable concept of time, so as not to be embarrassed when he gets it.

However... The situation was far less difficult than Xu had envisioned.

It took only 80 seconds to solve the calculation of the parameters of the moderated particle, the trajectory momentum of the particle in the magnetic field, and finally the kinetic energy E1 and E2 of the moderated particle were obtained.

"Whew..."

Xu Mang took a long breath, glanced at the frightened expressions of everyone present, and smiled indifferently: "I'm sorry... The main thing is that it's too simple... If you are not careful, it will be done in advance. ”

At this point,

Everyone was silent, looking at Xu Mang like a monster, he really couldn't imagine how he did it, and he didn't look very smart.

"How is it?" Xu Mang looked at the bridesmaid and asked with a smile, "Hurry up and proofread the answer." ”

"I..."

"This..."The bridesmaid was still in a state of speechlessness, and when she heard Xu Mang shouting to herself, she hurriedly walked to the side, took out her mobile phone and proofread it carefully, and when she finished proofreading the answer, she was even more surprised.

All right?

No way?

This is a topic given by Xiaoling's colleague, which is a standard relativity problem, and she threatens to not get down for two hours, and the result... As a result, the problem was solved in less than two minutes, and the answer was exactly the same.

He...

Who the hell is he?

Why did Cao Yang invite such a monster to be his best man?

"Hehe..."

"Huh?" Xu Mang asked with a smile, "What major did you graduate from?"

"I..."

"I have a master's degree in physics with a focus on optics. The bridesmaid said.

Xu Mang was stunned for a moment, nodded thoughtfully, and said, "Oh... Optics major, what then ... You should have asked an expert in relativity to come up with this topic, right? Can you give him a question?"

"Please tell him... If the moderated particle has a half-chance of decaying after flying four meters, ask him to calculate the particle's inherent half-life in its stationary coordinate system and the distance it will travel in the laboratory when the particle decays by 50 percent before moderation. Xu Mang said seriously.

This...

This guy is definitely not an ordinary person!

Absolute!

Not only the bridesmaids have this idea, but the groom and the groomsmen have this idea, although I don't know what Xu Mang is talking about, but when I listen to it, I feel lofty, and it is very profound, and it can provide questions to experts and scholars, this ability... It's not like a college student.

"Yes... I'm sorry I didn't understand your question, could you write it to me?" said the bridesmaid.

"Oh... Okay!"

moment

Xu Mang handed over a blank piece of paper with a question about the question he had asked, about the half-life of the particle.

"Open Sesame!"

Xu Mang smiled and shouted at the other side of the door.

As the bridesmaid outside the door communicated with the inside, and then the door was opened, Xu Mang and the others walked in without any obstruction, but... At this time, the groom was a little confused, and he was still recalling what had just happened.

In less than half an hour, I was in the bride's bedroom, oh my God... Isn't it a dream?

"Thank you, Sesame!"

Xu Mang said thank you to the bridesmaid who opened the door next to him, and said to the bride with a smile: "Cousin... I'm your brother-in-law... Although I became a traitor this time, don't worry, my cousin-in-law will dare to bully you in the future, and I will be the first to stand up!"

Xiaoling: (* ̄〈 ̄)

That's this guy!

There is such a traitor in my mother's family!

It's so angry!

But thinking about it from another angle, there is such a top genius in my mother's family, I really didn't expect that it only took half an hour, and the third topic was still more difficult... Really genius!

Although there is a little pride in her heart, she should still be angry, Xiao Ling scolded Xu Mang with a dark face: "I said you little bastard, which cousin do you get along with me?"

"Huh?"

"Yang Xiaoman!" Xu Mang asked with a smile, "Have you ever heard of it, cousin?"

Yang Xiaoman...

Xiao Man?!

After Xu Mang's reminder, Xiao Ling remembered who it was, and the memories of Xiao Man came flooding like a flood.

"Xiao Man!"

"I used to make up lessons for her when she was a child, and I didn't think of it... They all have boyfriends. Xiao Ling let out a long sigh, and her expression gradually began to become melancholy, but soon she returned to reality, now is not the time to recognize her relatives.

"Ahem!"

"Your name..."

"Cousin, call me Xiao Xu. ”

"Oh..."Xiao Ling nodded, and said with a serious face: "Xiao Xu... Although I helped your cousin-in-law pass the three levels, your cousin is particularly difficult in this level, so we said in advance... The cousin level is more difficult, and you need to solve two puzzles. ”

Then

Cui Caoyang was not happy, and said to his wife who had not passed the door: "Xiaoling... Xiao Xu is a guest, how can you bully him like this?"

"Cousin-in-law!"

"Don't be so flustered... What is yours is yours and what is yours. Xu Mang smiled and said, "Don't worry... I'm basically invincible at home, and I also have a relatively large influence in the world, aren't they just two problems... You can win ten puzzles!"

Xiao Ling glanced at Xu Mang, and said angrily: "Don't brag, your cousin's temper is very stubborn, and it is possible to really give you ten questions." ”

"Hehe..."

"I'm joking. Xu Mang said embarrassedly and politely: "Everyone in your family is like this... Xiao Man is too, he is anxious and white-faced at every turn. ”

Xiao Ling glanced at Xu Mang angrily, this guy seems to be addicted to being a traitor, and when he has the opportunity to talk to Xiao Man, he doesn't take his cousin seriously at all.

"No kidding!"

"Cousin... Please ask the question, my cousin-in-law and I are in a hurry. Xu Mang said solemnly: "I try to end all this in ten minutes." ”

Xiaoling: ???

You...

Cousin doesn't want to lose face?

In less than half an hour, he entered the bride's bedroom, fortunately, all of them were his own people, if his mother's family knew about it, wouldn't the big teeth have to laugh off.

"Give!"

"Let's see if you can solve it in ten minutes!" Xiao Ling said angrily.

Get the question,

Xu Mang glanced at it with his spare eyes, the first topic was about quantum mechanics, about the selection rule of the atomic state that absorbs or emits a photon when it acts at the electric dipole, according to the Bohr model and the corresponding formula, the radius of the 2P state lifetime of the hydrogen atom is estimated, and then the electron volts of the 2P state are calculated according to this value.

Question within question!

The thief is so insidious and cunning!

If the first question is wrong, then the second question is absolutely not correct, but the first question is especially difficult!

Xu Mang glanced at his cousin and the bridesmaids present, the kind of snickering expressions on their faces, and couldn't help sighing, alas... Youngster!

"Jump rules for Bohr's model!"

"It seems that the questioner... is a professor of quantum mechanics, and most people can't give such a type of question. Xu Mang said with a smile: "In fact, as long as the energy level difference between the radiation work and the jump to the foundation is calculated, this problem is basically solved." ”

“？？？”

“？？？”

“？？？”

Fake, right?

Is this guy still not human?

Even this will?

Just when everyone was confused, Xu Mang had already begun to write, almost the same as before, maintaining the highest hand speed.

After her cousin Xiaoling saw Xu Mang's answering speed, she was a little devastated on the spot, she couldn't imagine how this was done, how could it be so fast?

Doodle?

Performance art?

Or is it a funny show?

Five minutes

In just five minutes, Xu Mang finished this question under the frightened eyes of everyone, and then he looked at the last problem, as long as this is completed, today's work will be over.

After reading the title briefly, my expression, which was originally flat, suddenly became a little frightened.

Xu Mang: Σ(°△°|||) ︴

This...

It's definitely not as simple as a physics problem!

From this question, Xu Mang read another layer of meaning, although the questioner has carefully revised it, but can still understand some of the voiceover from the words, this is an experimental process, in this magnetic field, any mysterious particles that pass through will produce a small electric field.

This, in turn, will drive oscillations in the plasma, which can then be detected as evidence of the mysterious particle itself.

What Xu Mang needs to solve is to calculate the frequency of this mysterious particle.

Mysterious particles...

Hehe!

Xu Mang probably knew what this mysterious particle was, and the whole experiment was almost figured out, but Xu Mang had to admire the person who came up with this experiment, he let the plasma play a dual role, both creating an environment that allowed for efficient transformation, and providing a resonant plasmon to collect the converted energy.

Absolutely!

I don't know... His experiments were not successful.

Thinking of this,

Xu Mang showed a smile, this time the best man did not get such important information in vain, this new experimental method can be applied to find dark matter, tunable plasma... Putting it here made a big difference!

With an excited mood, Xu Mang carried out particle frequency calculations, and found many problems in the calculation, this experimental scheme seems to have a lot of flaws, and from the known conditions, there is no suitable solution at all.

hereunto

This experiment is almost certainly wrong.

But maybe it's his own ability to solve the frequency problem of this mysterious particle, but Xu Mang quickly dispelled this idea, after all, physics has reached the mastery level, unless it exceeds the existing theoretical framework, it can't be his own reason.

Then

Xu Mang silently put down the black pen in his hand, looked up and said to his cousin Xiaoling: "Cousin... There is a huge mistake in this question, I need to talk to the person who wrote the question, he seems to have reached a misunderstanding, if I don't change it in time, I'm afraid I will fall deeper and deeper!"

"At the same time... I want to cooperate with him, his experimental method is very interesting, if I can build a complete system, it will have a huge improvement in the fields of astrophysics and high-energy particles!" Xu Mang said seriously.

“？？？”

“？？？”

“？？？”

Oops,

It's going to be... Fresh and refined!

He even questioned the head of the Department of Physics of SU University!

And cooperation!

Crazy, right?

"Ahem!"

"Xiao Xu... Don't make trouble!" Cousin Xiaoling said embarrassedly: "To tell you the truth, this is a topic given by the head of the Department of Physics of Suzhou University, and what about your cousin and I... I am a lecturer in the Department of Physics, and our head of the department is usually very busy... And... In what capacity do you use to talk to him about problems and cooperation?"

Xu Mang silently took off his glasses and said with a smile: "As the deputy director of the Department of Physics of Fuzhou University, a professor of theoretical physics, and an authoritative expert in the fields of astrophysics, superconductivity, quantum mechanics, optics, materials science, etc. ”

......

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