When writing to Jia Xian, Lao Su once mentioned some situations to Xu Yun
Jia Xian is already old, and he usually studies some relatively sophisticated mathematical problems, and is not moved by money.
If you want to persuade him to come to Bianjing to help, you must show enough weight to make the other party's heart move.
So when choosing a letter to leave a message.
Xu Yun could only rack his brains to write down some of the knowledge that Jia Xian was most likely to be interested in.
For example, yin and yang are odd and even changes, a small number of binomial problems, and
In "Nine Chapters of Arithmetic" there are very famous cube root problems, and so far there are not many solutions.
The result was unexpected.
Xu Yunxia's 'dose' seemed a bit large, and the other party was already on the way along the network cable.
Of course.
Due to the limitation of viewing angle.
Xu Yun didn't know that he had a reader who was preparing to send a blade to his door in person, but this guy was still teaching leisurely.
On the second day after Wang Yue died of illness, he met classmate Xiao Li again in his mansion, who came to the door on time.
"Miss Li."
Xu Yun first said hello to Xiao Li, whom he knew very well, and then looked behind her with some surprise and asked
"Why can't I see His Highness Prince Jian today?"
in the past period of time.
Xiao Zhao and Xiao Li would visit almost every day or two, and together with Lao Su, they would listen to Xu Yun's introductory knowledge of physics.
Ten days have passed now.
Even Xiao Zhao and Xiao Li, who have little foundation in physics, can already do basic force analysis.
According to the agreement made at the end of the class two days ago.
Today, Xiao Li and Xiao Zhao were supposed to arrive at the house at the same time. Even if Xiao Zhao had something to do and couldn't come, he should have sent someone to deliver a message in advance.
After all, people in ancient times still valued the concept of keeping promises.
Even if you are letting go of pigeons, you must abide by etiquette, and even give some gifts or something to express your apology.
Unlike some later authors who clearly complained but showed no sign of anything.
Upon hearing Xu Yun's question, Xiao Li's face suddenly became solemn.
"Wang Lin, there are some unexpected changes in the palace today. I'm afraid His Highness Prince Jian will not be able to attend the class."
Xu Yun blinked and said in surprise
"In the palace? Isn't His Highness King Jian no longer involved in palace affairs?"
Mentioned before.
After Emperor Huizong of the Song Dynasty came to the throne.
In order not to arouse suspicion or to save his life, Xiao Zhao's personality was 'forced' to undergo a huge change.
Not only did he hang out in restaurants and brothels, he never went to the court meetings that he was supposed to attend, and he had almost no contact with the court.
It was even visited by Zongzheng Temple several times because of this, but it was suppressed by Song Huizong's "magnanimity".
In this background environment.
Today, Xiao Zhao ran into the palace. How can this not surprise people?
Seeing the surprise on Xu Yun's face, Xiao Li first looked around a few times.
After making sure there was no one around, he lowered his voice and said
"Last night at Yinshi, I fell down while getting up from the Queen Mother. The situation seemed not to be good."
When Xu Yun heard this, his pupils suddenly shrank.
To the Queen Mother.
This is a character who has little role in Chinese history, but cannot be ignored.
They say she doesn't have much weight,&bsp&bspIt's because her past life was uneventful.
She is the great-granddaughter of Prime Minister Xiang Minzhong and the queen of Song Shenzong Zhao Xu. In &bsp&bsp, Song Zhezong succeeded to the throne and respected her as the empress dowager.
In Chinese history, there are certainly not many women with similar resumes,&bsp&bspbut it is not that few.
From the time when Ying Zheng proclaimed himself emperor in the Qin Dynasty to the end of Pu Yi, there were more than 400 emperors in Chinese history. It is conservatively estimated that there are still some empress dowagers in their early 300s.
Compared with empress dowagers such as Cixi, Empress Dowager Xiang really has nothing outstanding.
As for not being ignored?
As mentioned before when introducing classmate Xiao Zhao, she was the biggest contributor to Song Huizong's rise to power, and she could even be regarded as the only helper.
From a qualitative point of view.
Empress Dowager Xiang's lack of knowledge or her choice to forcibly support Song Huizong in order to protect her own status was a key turning point in the Northern Song Dynasty's violent death.
Therefore, as a Song fan, Xu Yun vaguely remembered the cause of Empress Dowager Xiang’s death.
A.D. year.
Empress Dowager Xiang died suddenly on a certain day of the first lunar month due to a sudden stroke.
He died at the age of fifty-six or fifty-seven, right?
Before that,&bsp&bspHistorical records recorded her as 'physically and in good condition'.
That is to say
According to the normal historical trajectory,&bsp&bspIt seems that Queen Mother Xiang may be able to
Never had this fall?
Think of this.
Xu Yun couldn't help but have a flash of surprise in his eyes.
Because he thought about it again
Lao Su.
The development is also following the normal track. At this time, Lao Su should have set off from Bianjing and rushed back to his hometown of Jingkou.
But in today's situation.
Due to Xu Yun's sudden appearance,&bsp&bspOld Soda gave up the idea of returning to Jingkou and stayed in Bianjing for the time being.
In addition, he rescued Wang Yue who was supposed to be dead. It can be said that from a timeline perspective, there has been a very serious discrepancy between the copy and the standard line of history.
What's more important is
Xu Yun, or many experts in later generations have made speculations
Lao Suhui will die of illness next year, most likely because he had a fall during the period, which led to a sudden depression in his mental state.
So suppose - just suppose, what if Lao Su's fall happened on the way back to Jingkou?
Then can this lead to another guess?
This fall to the Queen Mother, was actually supposed to happen to Lao Su?
Just like the butterfly effect that has been said countless times.
Xu Yun flapped his wings at Lao Su's house, and Queen Mother Xiang in the palace was blown down?
Of course.
This is just Xu Yun's baseless speculation, and there is no evidence to prove it.
After all, there is a gap of nine hundred years between this era and later generations, and no one can be sure what the real historical details are.
Maybe in real history, Empress Dowager Xiang had such a fall, and everything was just a coincidence?
This chapter is not over yet, please click on the next page to continue reading! Then Xu Yun shook his head and threw these thoughts to the back of his mind.
Turned around and said to Xiao Li
"The Queen Mother is ill, and as a descendant, His Highness Prince Jian should go and visit her.
That being the case.
Miss Li, let’s do our own thing first, the master is already waiting over there in the study.”
Xiao Li nodded when he heard this, a trace of expectation flashed in his eyes.
Xu Yun then led Xiao Li through several courtyard walls, and finally arrived outside Lao Su's study.
Or to be precise, &bsp&bsp is Lao Su’s academy
As a great book collector that even Emperor Shenzong of the Song Dynasty envied, the books in Lao Su's home in Shi Ji were as many as 10,000 volumes, which can be said to be a vast ocean.
In normal history.
When Lao Su returned to Jingkou, he even directly contracted three fleets and dispatched dozens of carriages to transport his books back to Jingkou.
So in this mansion.
The place where Lao Su collected his books was not a room, but a courtyard consisting of three two-story attics.
When Xu Yun and his two men arrived at the courtyard, Lao Su was sitting on the stone table in the courtyard, looking at a microscope.
That's right.
microscope.
Of course.
This is a simple microscope that was crudely made by craftsmen based on the drawings provided by Xu Yun. The magnification is only over 20 times.
After all, higher precision lenses require calculations to prepare, such as the lens grinder's formula of f=(-)(r-r), etc.
At the same time, various indices of finished glass products should also be considered.
Even if Xu Yun applies the formula directly, it will take at least another half a month to complete.
Not to mention that Xu Yun's plan was to let Lao Su and others conduct their own experiments, which would require even more time, at least more than a month.
However, high-magnification precision is one thing, and low-magnification microscopy is another matter.
Just like Lao Su himself once built a five-fold telescope.
In the Northern Song Dynasty, you could grind out a set of low-power microscopes without the need for professional formula derivation.
Although a microscope with more than 20 times magnification is not enough to observe cell structure, it can barely serve as an entry-level equipment in the microscopic field.
At least it would satisfy Lao Su's curiosity or something.
After entering the courtyard, Xiao Li obediently bowed to Old Su
"Good morning, Uncle Su."
"Oh, Qingzhao is here."
Lao Su took his eyes away from the microscope and said hello to Xiao Li first.
Then he let out a light sigh and asked the same topic as Xu Yun
"Huh? Why don't you see His Highness King Jian?"
Xiao Li and Xu Yun looked at each other, and Xiao Li repeated what he had said before.
"Back to Uncle Su, something happened in the palace today."
After Lao Su listened quietly, a ray of light quietly flashed in his eyes.
"What? The Queen Mother fell?"
As a former prime minister, Lao Su was able to maintain long-term neutrality between the old and new parties, and his political skills were actually quite high.
When he suddenly heard the news that the Empress Dowager Xiang had fallen, almost immediately, many speculations flashed through his mind.
"If the Queen Mother recuperates and delegates power, the pressure on King Jian will probably be even greater."
However, considering that Xiao Li can only have access to a general situation, and there is obviously no way to know the inside information, many judgments cannot be accurately made.
Therefore, after thinking for a while, Lao Su decided to put the matter aside and planned to inquire about it through his own channels later.
Then he brought his thoughts back to reality, picked up a box from the table, and said to Xu Yun
"Xiao Wang, inside the box is the beaten to death. The glass piece has been pressed on it according to your request. Please see if it fits."
Xu Yun took the wooden box, gently opened the lid, and looked inside.
I only see this moment.
There are several glass tablets of cockroaches placed in the wooden box. These cockroaches have been disinfected with alcohol in advance, so they don't look particularly disgusting.
I don’t know who did the tableting, but the air tightness and uniformity are very good.
Xu Yun then took an empty piece of glass and moved the microscope under the shade of a tree.
Then the stage was adjusted to the lowest position and the operation started.
I saw him putting the slide into the gap at the back of the slide clamp and slowly pushing the slide forward with both hands.
At the same time, he said to the two of them, Lao Su
"The slide should be placed gently and make sure it is facing the light hole.
Then look at the eyepiece with your left eye and turn the reflector with both hands like I did until you see a bright field of view."
Lao Su looked at Xu Yun's gesture of turning the reflector and repeated it with his empty hands.
Then he nodded, indicating that he remembered.
Xu Yun continued to operate and explained at the same time
"After the light is adjusted, start to slowly rotate the converter to align the low-magnification objective lens with the clear aperture."
"Then stare at the objective lens with both eyes, rotate the coarse focus screw to slowly lower the lens barrel, until the objective lens is close to the glass."
"Look at the eyepiece with your left eye, rotate the coarse focus screw, and slowly raise the lens barrel.
"Until you see the object image, then fine-tune it with the fine focus screw to make the object image clear."
After completing the last step, Xu Yun clasped his hands together and said
"This is the focusing step of the microscope. Once these steps are completed, you can observe the image."
Lao Su nodded and was about to ask some more questions about the steps that he didn't remember clearly, but he heard Xiao Li on the side say
"Wang Lin, can I try this microscope?"
Xu Yun was stunned when he heard this
"Miss Li, have you memorized all these steps?"
Xiao Li tilted his head and looked a little confused.
"It's not like I've memorized everything. I just feel like I can restore it."
Xu Yun thought for a moment, disrupted the order of the microscope, and gave up his position.
"Miss Li, do you want to try?"
Xiao Li didn't hesitate much, walked over openly, and picked up the slide somewhat dryly.
While talking to himself, he restored Xu Yun's operations.
"First adjust the aperture by adjusting the slice and turn the coarse focus screw, and then the fine focus screw of the eyepiece!"
Xu Yun immediately looked at this little bean sprout in surprise.
To know.
in the past few days.
In the small class composed of Xiao Li, Xiao Zhao and Lao Su, everyone's learning progress is different.
The fastest among them is naturally Lao Su.
As a contemporary master with certain physics knowledge, Lao Su's current physics knowledge has already learned the concept of acceleration.
This chapter is not finished yet, please click on the next page to continue reading the exciting content! After class, Xu Yun will be asked to give him extra lessons, sometimes for several hours.
A few days ago, he took Xu Yun to the hills outside Bianjing City to conduct Galileo's iron ball experiment.
Among the remaining two people, Xiao Zhao and Xiao Li, Xiao Li's progress is much slower than Xiao Zhao.
Many times, the knowledge that Old Su and Xiao Zhao understood immediately, Xiao Li had to think about it two or three times before he could understand it.
After all, this girl is a liberal arts student in the standard sense.
Interest is one thing, thinking and receptive ability are another.
But what Xu Yun didn't expect was that
Xiao Li, who is stuck in physics and mathematics, seems to have some talent in biology?
This is interesting
Of course.
Whether this little bean sprout can take the path of biology in the future requires further observation.
After all, in the final analysis, this is just a microscopic step-by-step reduction.
Later, Lao Su also tried to get started. After making sure that he had mastered the relevant steps, Xu Yun officially replaced the slices with cockroach specimens.
The observation effect of a microscope with more than 20 times magnification is actually similar to that of later macro cameras - interested students can search on a certain website, and a camera with 15 times or 20 times times only costs a dozen yuan.
It's good to buy it and attach it to your keychain, so you can look at flowers and plants occasionally.
Although cells cannot be seen at this magnification, some organs of the cockroach can be seen clearly under several times of magnification.
"I see"
Looking at the magnified hind legs of the cockroach, Lao Su was thoughtful.
"It turns out that the reason why Zing can stand on the wall is because there are so many fine barbs on its feet.
The barbs hook the bulges on the wall so they won’t fall off the wall.”
"Not only that."
Xu Yun on the side picked up a cockroach egg with homemade tweezers and said to Lao Su:
"I'm afraid you don't know that only one mating in a lifetime can produce offspring continuously.
At the same time, they carry a large number of pathogenic bacteria. Countless plagues throughout the ages have been caused by mosquitoes and worms.
Therefore, if possible, we should try our best to eliminate pests and insects."
Old Su nodded slightly and remembered this in his heart.
Although he has retired from office, he still will not sit idly by when it comes to the source of the plague.
After all, countless civilians have died due to plague throughout the ages.
In a sense.
The plague is consuming the country's destiny and hollowing out its foundation.
If the facts are really as Xu Yun said, then
Damn it, you deserve to be killed!
Then Lao Su glanced at Xiao Li who was standing aside. At this time, the girl was observing an ant and seemed very interested.
He couldn't help but stretched out his hand to touch the microscope and marveled.
"Microscopically, Xiao Wang, this thing is really as mysterious and abnormal as you said.
You can see organs clearly with lenses that are twenty times magnified, so if you can magnify them five hundred times, you may be able to see subtle things that are difficult to see with the naked eye."
Although in the past few days, Lao Su has gradually accepted many of the concepts proposed by Xu Yun.
But as a giant of ancient science, he still remains cautious about some concepts.
Such as microorganisms.
After all, this thing is different from the electrolytic cell of a generator. What Xu Yun has always proposed is only a theory and has no empirical evidence.
It's one thing to accept it, but it's another thing to fully believe it and even accept it as truth.
At least before actually seeing microorganisms or bacteria, Lao Su would have had some doubts.
This is actually a very normal psychology and is human nature.
After all, in a sense.
The concepts put forward by Xu Yun are far more outrageous than brainwashing. They are basically the same as reshaping cognition.
It can only be said that as Xu Yun displays more and more scientific tools, this possibility continues to increase and is infinitely close to reality.
And just as Lao Su was talking to Xu Yun.
At the door of the study courtyard, the figure of Mr. Xie Duguan suddenly appeared.
"master."
Seeing this, Lao Su quickly returned his thoughts to reality.
"Oh, first year, what's important?"
Xie Laoduguan hurriedly stepped forward and handed something like a greeting card in his hand.
Then he whispered a few words to Lao Su.
When Lao Su heard this, he immediately became happy and said quickly
"Really? Please come quickly!"
Xie Laoduguan bowed to accept the order, while Lao Su looked at Xu Yun
"Xiao Wang, the person you were waiting for is here."
"The person I'm waiting for?"
Xu Yun was stunned for a moment, then thought of something
"Could it be Mr. Tongyu?"
The words just fell.
Outside the academy.
Then there came an old but carefree voice.
"Where is Wang Lin? It's out of context, why don't you update it quickly!"