Chapter 355 Zhao Zhengguo’s purpose (Part 1)
In the laboratory.
Hearing Qiu Sheng's words.
Xu Yun's pupils suddenly shrank.
The rheometer mentioned by Qiu Sheng is a detection method of oscillatory rheology and can be used to detect the viscosity of most adhesives.
Although strictly speaking, the quality of the glue does not entirely depend on the viscosity. Sometimes, internal stress and other factors must be considered.
But the viscosity of the donkey hair compound was just measured casually by Qiu Sheng, which can explain a lot of problems.
Then he glanced at Qiu Sheng and asked seriously:
"Lao Qiu, the mucus you are talking about is the sweat of local donkeys?"
Qiu Sheng nodded heavily, pulled out a report again, and handed it to Xu Yun:
"Yes, to be precise, it should be the apical secretion of local donkeys."
Xu Yun quickly took the report and read it.
in biology.
There are three main ways of secretion of exocrine glands:
Local secretion.
Apocrine secretion.
And total plasma secretion,
On the Internet in 2022, you can often see such a saying:
Dogs have no sweat glands, so they can only stick out their tongues to dissipate heat. The dog here does not refer to the dog author, but a real dog.
But actually.
This statement is not correct.
In fact, the dog's apocrine glands are distributed in the skin of the whole body except the soles of the feet, while the urinary glands of the eccrine glands are only distributed in the skin of the soles of the feet.
It’s just that animals like dogs cannot regulate their body temperature through sweating.
The bacterial skin infections that some cats and dogs develop are essentially infections of their sweat glands.
By the way.
If you have a dog at home, you can try smelling the dog's feet. It is the smell of dog sweat, which is like stinky tofu.
In addition to dogs, donkeys also naturally have sweat glands.
The sweat glands of donkeys are apocrine glands. During the secretion process of gland cells, the top membrane of the cells is damaged, and part of the cytoplasm at the top of the cells is discharged together with the secretions.
And mentioned before.
During the original research process of Academician Yang.
When the relative humidity increased from 0 to 100%, the axial swelling of native donkey hair was only 1%.
The ratio of Young's modulus to shear modulus decreased from 217:1 to 15:1.
From the fact that the content of this paragraph was not included in this chapter, we can conclude that all students must have understood the meaning of the research results.
That’s right!
There is something between the donkey's hair that firmly binds the axial swelling of the donkey's hair.
Now I want to come
Could it be that the substance causing this phenomenon is the kind of mucus Qiu Sheng discovered?
Xu Yun thought carefully for a while, and theoretically it seemed
Is it really possible?
After all
Matter and elements are not the same.
There are 118 kinds of elements that have been discovered so far, but there are countless possible substances that can be combined from them.
Take the simplest example, coffee beans.
Coffee beans roasted in two ways, dark roasting and light roasting, have different tastes, and the essence of this situation is that different substances are produced in them.
Some substances are currently known, and some substances are temporarily unknown - the unknown here does not mean that they cannot be detected, but that there is no meaning in detection.
A normal cup of coffee contains more than a dozen or more nickel substances.
Therefore, you can often see XX sugars, XX acids, and XX-based compounds on the substance table, but you cannot see the specific names. This is the reason.
Coffee is so
This possibility naturally exists for native donkeys.
Besides, don’t forget.
Donkey-hide gelatin, an early form of gelatin, came from donkeys:
Ejiao has been used to stick flute films a long time ago. It is thin and sticky, so——
Maybe the situation Qiu Sheng mentioned actually exists?
As he thought about it, Xu Yun's expression was a little subtle.
Bad breath toothpaste that has not yet been interviewed requires donkey hair.
Microbial batteries also use donkey hair.
Hemostatic gelatin requires donkey sweat.
Hiss.
Will there be other technologies in the future that will also use Brother Lu?
Just as Xu Yun's thoughts spread.
In the donkey pen.
Brother Donkey, who was resting after making love with Donkey Girl, suddenly started up, opened his eyes in horror, and quickly looked around in the surprised eyes of Donkey Girl.
After a few seconds.
Brother Donkey breathed a sigh of relief.
Okay okay okay.
It turned out to be a nightmare, I was scared to death.
Just now in his dream, he dreamed that he had returned to the Song Dynasty, was made into donkey meat and burned, and a group of people gathered around a big pot, talking and laughing, drinking and sharing food.
Burning donkey meat is the most horrific torture in the world, nothing can surpass it!
Well, definitely!
Lu Xun once said a very famous saying:
The joys and sorrows of humans and donkeys are different.
Therefore, Xu Yun and Qiu Sheng were not aware of Brother Lu's telepathy at this time. After reading the experimental report, they reached a consensus in a very short period of time:
There's something going on!
"Old Xu, that's what I think."
The two guys put their heads together and saw Qiu Sheng holding his fingers and saying:
"Look, although the microbial battery has just been established as a project, and the coagulation gelatin is still in the conceptual stage, our current situation is somewhat special."
"Unlike some other chemical or physical experiments, the anomalies we found are all related to Brother Donkey's derivatives, and the cost can be almost zero."
"So."
"Can we take a bigger step, allocate a few thousand dollars to prepare some equipment, and then try to start research?"
"I estimate that even if it fails, the final loss will only be two to three thousand yuan and dozens of kilograms of donkey hair."
Xu Yun nodded in agreement and concluded:
"It doesn't cost any money, just give it a try."
"Brother Donkey now has a younger sister. Just like it doesn't matter if an old man goes bald after marriage, there is no need to keep Brother Donkey's hair particularly neat."
Don't know why.
When saying this.
Xu Yun subconsciously glanced at the sparse top of Zhao Zhengguo's head.
Zhao Zhengguo:
".?"
Ten minutes later.
The prototypes of the two projects were thus established. The bulk of the initial experimental costs mainly came from the fodder to feed Brother Donkey.
After handling Qiu Sheng's affairs, Xu Yun turned to look at Zhao Zhengguo:
"Academician Zhao, I'm sorry to keep you waiting for so long. I wonder what you want to see me for today?"
"."
Zhao Zhengguo's facial muscles twitched invisibly twice, took a deep breath, and forced himself to calm down:
"Xiao Xu, do you still remember the particle trajectory you calculated before?"
Xu Yun nodded:
"Of course I remember."
Students with good memory should remember it.
After completing the Northern Song dungeon, the rewards Xu Yun received included a formula.
The formula can be divided into three small terms. Later, Xu Yun calculated the first part and found that it was an equation suspected of particle orbit.
So he handed the orbital data to Pan Shuai and Zhao Zhengguo for research.
Before entering the wheat copy.
Xu Yun once heard that the experiment had produced results, but it was kept highly confidential. At that time, even Xu Yun, the discoverer of the orbit, was told that the specific content could not be transmitted by phone or the Internet. After returning to HKUST, a dedicated person would Contact him.
Tell the truth.
Before today, Xu Yun had already made some guesses about the unknown particle.
What I didn’t expect was.
Based on the analysis of the situation at this time, the importance of that particle far exceeded his expectations.
It was even so important that Zhao Zhengguo personally contacted him.
Who is Zhao Zhengguo?
This is a dignified academician of the Chinese Academy of Engineering. He was the leader of the Yanjing Spectrometer Calimeter Group of the Institute of High Energy Physics of the Chinese Academy of Sciences, the director of the Physics Office 1 and the Experimental Physics Center of the Chinese Academy of Sciences, and is currently the head of the Physics Particle Research Center of the USTC!
In the current domestic particle physics field, Zhao Zhengguo can firmly rank among the top three.
An event that would allow such a big boss to make a special trip to inform us would definitely not be too small.
Then Zhao Zhengguo glanced at Qiu Sheng aside, smiled and said to him:
"Xiao Qiu, can you please go down and help me buy a package of Yellow Crane Tower? I will transfer the money to you via WeChat later."
Qiu Sheng was taken aback for a moment, and then he reacted:
"No problem."
After speaking, he patted Xu Yun's shoulder meaningfully, turned around and left the laboratory.
When Xu Yun saw this, he did not say anything to stop him, nor did he say anything like "Qiu Sheng is not an outsider" - he and Qiu Sheng have had a lifelong friendship, but Zhao Zhengguo didn't know that.
Not to mention that Qiu Sheng himself clearly had this realization.
If Qiu Sheng is forced to stay, it will appear that his emotional intelligence is very low.
After Qiu Sheng leaves.
Zhao Zhengguo's face straightened and he said to Xu Yun:
"Xiao Xu, before I tell you the results of the experiment, I want to ask you a question related to particles."
Xu Yun placed two plastic cups in front of Zhao Zhengguo and himself, and poured Zhao Zhengguo a glass of water first:
"You said."
"Suppose the spin of a certain particle is semi-odd, what kind of particle do you think it might be?"
"Spin is a semi-odd number?"
Xu Yun stopped pouring water for himself, and the broken spout hovered twenty centimeters above the table:
"Is this the only condition?"
"Well, just this one."
Hearing this, Xu Yun felt doubtful in his heart, but he still answered obediently:
"Particles with a semi-odd spin can only be fermions. Electrons, protons, neutrons, and baryons are all possible - this condition can only be analyzed up to this point."
Zhao Zhengguo looked at him with a smile and asked again:
"Is it possible that it is a meson?"
Xu Yun was stunned for a few seconds and quickly shook his head:
"Absolutely impossible. Mesons are bosons, and the spin of a boson is an integer. This is a public axiom. It can even be said to be a quasi-axiom."
As everyone knows.
Spin is an intrinsic degree of freedom of particles.
According to the Pauli exclusion principle.
If two identical fermions have exactly the same wave function, then the distribution probability density given by their overlapping wave functions is 0.
Therefore, fermions can only have half-odd spins, that is, 1/2, 3/2, 5/2, 7/2, etc. - sometimes also called half-integers, just multiply by 2 to understand.
Electrons, protons, neutrons, and baryons are all fermions.
Mesons, photons, weak gluons, and Higgs particles all belong to bosons, and their spins are integers.
This is a public opinion that is not controversial in the microscopic field. Even civilian scientists will not question this issue - because the conclusion of the collider is there.
Bosons are an important medium for the transmission and interaction between fermions, such as trains and tracks.
in life.
Some people may not be able to distinguish between high-speed trains, high-speed trains or even green cars.
But it is impossible to call the track a high-speed rail anyway.
In the laboratory.
Looking at Xu Yun who was vowing to do so, Zhao Zhengguo sighed with emotion:
"But Xiao Xu, do you know that the particles we calculated based on your orbit.
"Although its spin is a semi-odd number, the observed magnitude of the interaction phenomenon is 140Mev, which is standard
"The electrically neutral meson category."
Hearing Zhao Zhengguo's words, Xu Yun's breath suddenly froze.
After coming back to his senses, his first reaction was
Zhao Zhengguo was joking like Commander Xue from Chicken Soup.
But he observed Zhao Zhengguo for a while, but he couldn't see any hint of a joke.
After a few seconds.
He finally couldn't help it anymore and asked tentatively:
"Academician Zhao, are you telling the truth?"
Zhao Zhengguo's face did not show any dissatisfaction at being questioned. After all, when he saw the result, he had the same expression:
"Really."
Xu Yun was silent.
The particles he originally calculated theoretically belong to the category of hyperons, which are singular particles composed of three quarks with a mass exceeding the proton.
Metaphorically
Chaozi can be seen as a fat man.
Meson can be seen as a thin man.
If you ask a thin man and a fat man to run 100 meters together, for the same distance, the fat man consumes more energy - that is, the observation level of the interaction phenomenon must be more.
That is, the semi-odd spin (fat man) and the observation level of 140Mev (the energy consumed by the thin man) cannot coexist at the same time.
Unless
Think of this.
Xu Yun's pupils shrank again and he suddenly looked at Zhao Zhengguo:
"Could it be that the movement of that particle is not 'running' but"
"Leap?"(End of Chapter)