Chapter 554

In the basic national policy of observing the production of relativistic mesons, the trajectories of mesons in the magnetic field are a curve of a certain value, and the trajectories of the mesons after the partial energy loss of the medium are 0.34t, and the velocity of the particle beam after slowing down is 1.8x10 ^ 8ms measured by time-of-flight spectrometer.

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

Most people are confused when they see this kind of topic, but Xu mang is full of incomparable enthusiasm. After all, he is a professor of theoretical physics, and his major is relativity and quantum mechanics. Few people understand these better than him.

Ten minutes,

this is Xu Mang's conservative estimation. After all, his racing computing ability has degenerated so much. If you give a reasonable concept of time, you won't be embarrassed.

However, the situation is far from as difficult as Xu mang thought.

It takes only 80 seconds to calculate the parameters of the slowing particles to the track momentum of the particles in the magnetic field. Finally, the kinetic energy E1 and E2 of the slowed particles are obtained.

"Hoo..."

Xu MANGCHANG took a breath, looked at the panic expression of the people present, and said with a cool smile: "I'm sorry... It's mainly too simple... It's done ahead of time if I'm not careful."

At this time,

everyone was silent and looked at Xu mang like a monster. I can't imagine how this was done. He didn't look very smart.

"How about it?" Looking at the bridesmaid, Xu mang asked with a smile, "come and proofread the answers quickly."

"I..."

"this..." the bridesmaid was still in a state of speechlessness. Hearing Xu mang calling herself, she hurried to the side and took out her mobile phone to proofread it carefully. When she finished proofreading her answers, she was even more surprised.

All right?

Can't you?

this is as like as two peas of Xiaoling's colleagues, the standard relativity problem, which has threatened to fail for two hours. As a result, the answer is exactly the same in less than two minutes.

Who is he...

who is he?

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

"Ha ha..."

"Alas?" "What major did you graduate from?" asked Xu mang with a smile

"I..."

"I am a master of physics in the field of optics." Said the maid of honor.

Xu mang was stunned for a moment and nodded thoughtfully: "Oh... Optics major, then what... This topic should be you find an expert in relativity? Can you give him a question for me

"Please tell him... If the moderated particle has a half chance of decay after it flies four meters, ask him to calculate the inherent half-life of the particle in its stationary coordinate system and the distance in the laboratory when the particle decays 50 percent before slowing down." Xu said earnestly.

This...

this guy is definitely not an ordinary person!

Absolutely!

Not only the bridesmaid has this idea, but also the bridegroom and the best man group. Although we don't know what Xu mang is talking about, he feels tall and profound. He can provide experts and scholars with questions. This ability is not what college students should have.

"Yes... Sorry, I didn't understand your question. Could you write it for me?" Said the maid of honor.

"Oh... OK!"

In a moment,

Xu handed in a piece of white paper with questions about his questions, about the half-life of particles.

"Open sesame!"

Xu mang shouts at the opposite door with a smile.

As the bridesmaid outside communicated with the inside, the door was opened, Xu Mang and others walked in without any obstacles. However, the bridegroom was a little confused at this time, and he was still recalling what had just happened.

In less than half an hour, I came to the bride's bedroom. My God, it's not a dream, is it?

"Thank you, sesame!"

Xu mang said thanks to the bridesmaid who opened the door and said to the bride with a smile: "cousin... We are coming! I'm your brother-in-law... Although I became a traitor this time, you can rest assured that my brother-in-law dares to bully you in the future. I'm the first to stand up! "

Xiao Ling: (* ~ ＾)

that's the guy!

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

How angry you are!

However, from another perspective, there is such a top talent in my mother's family. I really didn't expect it. It only took half an hour, and the third topic was raised to a higher level of difficulty... It's really a genius!

Although she was a little proud in her heart, she should still be angry. Xiaoling, with a black face, yelled at Xu Mang: "I said you are a little bastard. Which cousin of mine are you on?""Ah?"

"Yang Xiaoman!" Xu mang asked with a smile, "has cousin ever heard of it?"

Yang Xiaoman...

Xiaoman?!

After Xu Mang's reminder, Xiaoling remembers who it is, and the memory of Xiaoman is like a flood.

"Little man!"

"When she was a child, I gave her a make-up lesson. I didn't expect that... I had already made a boyfriend." With a long sigh, Xiao Ling's expression began to feel melancholy, but soon she came back to reality. It was not the time to recognize her relatives.

"Cough!"

"Your name is..."

"cousin, please call me Xiao Xu."

"Oh..." Xiaoling nodded and said seriously: "Xiao Xu... Although she helped your cousin's husband through three tests, but your cousin's level is particularly difficult. We said in advance that... Cousin's level is more difficult, you need to solve two difficult problems."

At this time,

Cui Caoyang was not happy, and said to his wife who had not passed by, "Xiao Ling... Xiao Xu is a guest. How can you bully him so much?"

"Brother in law!"

"Don't be so flustered... It's yours, it's yours." Xu mang said with a smile: "don't worry... I'm basically invincible at home, and have a relatively large influence in the international community. It's not just two problems... Ten problems can also be won!"

Xiao Ling glanced at Xu Mang and said angrily, "don't brag. Your cousin's temper is very stubborn. She may really give you ten questions."

"Ha ha..."

"I'm having fun." Xu mang embarrassed and not disrespectful appearance said: "your family's people are like this... Xiaoman is also, always anxious head pale face."

Xiaoling gives Xu mang a bad look. This guy seems to be addicted to being a traitor. When she has a chance to talk to Xiaoman, she doesn't take her cousin seriously.

"No kidding!"

"Cousin... Please make a question. My cousin and I are in a hurry." "I try to finish all this in ten minutes," Xu said solemnly

Xiao Ling:???

Are you...

don't you want face?

Less than half an hour into the bride's bedroom, fortunately, the presence of their own people, if this is known by the mother's family, not big teeth will laugh off.

"Here you are

"See if you can fix it in ten minutes!" Xiao Ling said angrily.

After getting the title,

Xu mang glanced at the topic with his spare light. The first topic is about quantum mechanics, about the selection rule of atomic state that absorbs or emits a photon under the action of electric dipole. According to Bohr model and corresponding formula, the radius of 2p state life of hydrogen atom is estimated, and then the electron voltage of 2p state is calculated according to this value.

The question is right!

Treacherous and cunning!

If the first question is wrong, then the second question is absolutely impossible to be correct, but the first question is particularly difficult!

Xu mang glanced at his cousin and several bridesmaids on the scene. Their expressions of secret joy on their faces could not help sighing. Alas, young man!

"The transition rule of Bohr model!"

"It seems that the author... Is a professor of quantum mechanics, and most people can't give such questions." With a smile, Xu said, "in fact, as long as we calculate the radiation work and the energy level difference from the transition to the base, this problem is basically solved."

“？？？”

“？？？”

“？？？”

Fake?

Is this guy still human?

Even this one?

When everyone is confused, Xu mang has started to write, almost the same as before, maintaining the highest hand speed.

After seeing Xu Mang's speed of answering questions, her cousin Xiaoling collapsed on the spot. She couldn't imagine how this could be done and how could it be so fast?

Graffiti?

Performance art?

Or a funny show?

In five minutes,

in a short period of five minutes, Xu ended the question under the eyes of all the people. Then he looked at the last difficult problem. As long as this was completed, today's work would be over.

Simply read the title, the original or plain expression, suddenly became a little frightened.

Xu Mang: ∑ (°Δ°|︴︴︴︴︴︴︴︴︴︴︴︴︴︴︴︴︴︴︴︴︴!

From this topic, Xu mang read another meaning. Although the author has carefully revised it, he can still learn some extra sounds from a few words. This is an experimental process. In this magnetic field, any mysterious particle passing through will produce a small electric field.

In turn, this will drive oscillations in the plasma, which can then be detected as evidence of the mysterious particles themselves.

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

ha ha!

Xu mang probably knew what the mysterious particle was, and the whole experiment process was almost understood. But Xu mang had to admire the man who came up with the experiment. He made the plasma play a dual role, creating an environment that allows efficient conversion and providing a resonant plasmon to collect the energy after transformation.

Absolutely!

I don't know if his experiment was successful.

Thinking of this,

Xu mang showed a smile. This time, the best man did not have a white hand. He even got such important information. This new experimental method can be applied to search for dark matter. The tunable plasma... Played a great role here!

With an excited mood, Xu mang calculated the particle frequency and found many problems. It seems that there are some defects in this experimental scheme. If we analyze the known conditions, we can't find a suitable solution.

At this point,

is almost certain that this experiment is wrong.

But perhaps his own ability is not good enough to solve the frequency problem of this mysterious particle, but Xu soon gave up the idea. After all, physics has reached the level of mastery. Unless it exceeds the existing theoretical framework, it can not be his own reason.

At this time,

Xu mang quietly put down his black pen in his hand, looked up at his cousin Xiaoling and said, "cousin... There are huge mistakes in this topic. I need to talk with the author. He seems to have come to a misunderstanding. If I don't change it in time, I'm afraid I will get deeper and deeper!"

"At the same time... I want to cooperate with him. His experimental method is very interesting. If we can establish a complete system, it will greatly improve the two fields of Astrophysics and high-energy particles!" Xu mang said solemnly.

“？？？”

“？？？”

“？？？”

Ouch,

this force pretends to be fresh and refined!

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

We need to cooperate!

Crazy?

"Cough!"

"Xiao Xu... Don't make any noise!" My cousin Xiao Ling said in embarrassment, "to tell you the truth, this is the title given by the head of the Department of physics of Jiangsu University, and your cousin and I are lecturers in the Department of physics. The head of our department is usually very busy... And... What identity do you use to talk to him about problems and cooperation?"

Xu mang quietly took off his glasses and said with a smile: "as deputy director of the Physics Department of Fuda, Professor of theoretical physics, authoritative expert in astrophysics, superconductivity, quantum mechanics, optics, materials science and other fields."

......

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