Chapter 154 Everything is ready, all we need is the east wind (6.8K)
After getting a relatively satisfactory answer.
Xu Yun walked out of the yard and found Mr. Xie, the governor.
He asked him to find some servants and maids, and placed Xiao Zhao and Xiao Li in the guest rooms.
Early the next morning.
Xiao Zhao was the first to wake up from his drunkenness.
"His Royal Highness King Jian."
After Xiao Zhao put on his clothes, he just went out.
Xu Yun, who had been waiting outside the hospital for a long time, quickly stepped forward, cupped his hands towards Xiao Zhao, and said with a smile:
"I wonder if Your Highness is still used to sleeping last night?"
Xiao Zhao rubbed his still sore head, grinned, shook his head and said:
“The bed is quite comfortable, but the wine is a bit strong”
Then, without waiting for Xu Yun to answer, Xiao Zhao thought of something.
His eyes flashed and he took the initiative to ask him:
"By the way, Mr. Wang, did the King make a drunken blunder yesterday?"
When asked this question, Xiao Zhao's tone seemed casual, but his expression was slightly nervous.
After all, although he is a good drinker, he is rarely really drunk.
In most cases, it's just put on acting.
When he learned from Wang Zhen yesterday that Xu Yun had good wine, he thought it would be at most the same as the bottle of incense in the palace.
That is about twenty degrees in later generations.
The unexpected result was.
The content of Xu Yun's spirits was far beyond his expectation.
However, the wine tasted so mellow when he first tasted it that he didn't notice and drank a few more sips.
After the alcohol hit me, I started to feel dizzy and couldn't pull myself back.
Although Xiao Zhao knew that his wine was pretty good, he was always afraid of what might happen.
It would be terrible if he really said anything.
But soon.
Xu Yun's answer made him breathe a sigh of relief:
"Your Highness King Jian, you are asking the wrong person.
The grass-roots people had little drinking power and felt dizzy after just two drinks. They were the first to get drunk yesterday.
However, before fainting, the common people seemed to still vaguely remember what Miss Li was telling you, 'Your Highness has been absent from court for several days, so he should punish himself with a drink' and so on."
Xiao Zhao was stunned for a moment when he heard this, and then nodded thoughtfully, his expression visibly relaxed:
"I do remember saying something like this, Hey, Miss Li has such a temper, she likes to make trouble when she is drunk.
That was the case with the original song "Like a Dream"."
Xu Yun could only laugh awkwardly.
Then Xiao Zhao briefly chatted with him for a while, and after making sure again and again that he didn't say anything rude, he quickly said goodbye and left the Su Mansion. .
Although the Queen Mother has now passed the most dangerous stage, Xiao Zhao no longer needs to stay in the palace all the time.
But as a junior, I still have to go and greet Queen Mother Xiang every day.
Xu Yun turned around and headed to another courtyard, preparing to give a routine mathematics lesson to Lao Jia Han Gonglian and others.
A few days ago.
After calculating the tilt factor of the lens, the calculation workload on Lao Jia and others was greatly reduced.
However, Xu Yun did not let them leave.
Instead, he persuaded Lao Su to give Liu Yi and several others the status of disciples, and continued to provide advanced mathematical knowledge.
These include symbols, names that are not limited to modern mathematics, and some related to the binomial equation, that is.
Calculus-like.
It’s the same sentence as before.
Although the mathematical level of the Song Dynasty was very high, it still did not have the systematic basis for the complete derivation of calculus.
For example, before the calculus was derived by later generations of Mavericks, the foundation of the European mathematical community was already very solid - compared to that era,
First, there is the product quotient theorem of two functions by teacher Barrow, and at the same time, there are infinitesimals and a large number of previous guesses and deduction results as the cornerstone.
By adding up all the above, Mavericks derived calculus.
Although genius, it does not violate the laws of mathematics.
This was not the case in the mathematics community of the Song Dynasty, which seriously lacked accumulation in this area.
Even if Xu Yun really comes up with calculus, it can only be regarded as encouraging others.
Therefore, what Xu Yun can do is to inform Lao Jia of a few relevant variables in the entire calculus system, which is what Xiao Niu calls flow.
Try to plant some seeds for the local mathematics community in this time and space, such as making the college entrance examination more difficult by 20 or 30 points.
that's all.
In the alternation of giving lessons to Lao Jia, giving lessons to Xiao Zhao and Xiaoli, and setting up a small stove for Lao Su.
Twenty days go by in a blink of an eye.
Early this morning.
Xu Yun finished his morning snack as usual, and as soon as he yawned and walked out of his hut, he found a little old man standing outside the door:
"Eight-level workers" in the Northern Song Dynasty.
Siegfried.
Seeing that Siegfried was waiting for him, Xu Yun quickly stepped forward and gave him the courtesy of a junior:
"Master Qi, why are you here? Could it be that the telescope is about to be made?"
Siegfried smiled and cupped his hands, nodded, and replied:
"Master Wang, about 80% of the preparation of the telescope has been completed. Today, I came here to ask you to go to the instrument manufacturing bureau to check it."
Then he paused, seemed to remember something again, and added:
"By the way, Miss Li's microscope has been completed. Young Master can also take delivery of it."
Xu Yun nodded clearly.
Considering that the telescope is quite large and requires a lot of professional equipment to make, the old Su family is obviously not suitable.
After many discussions, the production location was finally arranged at the Manufacturing Bureau.
Of course.
In addition to this obvious reason, there is another potential reason:
The entire process consumes more than five tons of iron.
To know.
Iron was an important military material in ancient China.
If this iron fell into private hands, it would be enough to arm a large army.
Therefore, for the sake of stability, the entire production process must be carried out under the eyes of Song Huizong.
The only part of the entire process that was carried out at Lao Su's home was the production of a mercury paraboloid.
This mercury parabola Xu Yun had finished making it a few days ago. It is currently stored in a closed, low-temperature environment and can be used at any time.
That is to say.
Siegfried was mainly responsible for the cylinder body, spherical lens and related aspects of changing the water transport instrument platform into a rotating instrument clock.
Xu Yun then simply took care of his clothes, and then followed Siegfried to prepare for the weapon making bureau.
It's a coincidence.
As soon as the two of them reached the door of Su Mansion, they saw Xiao Li coming towards them.
"Miss Li."
Xu Yun quickly stopped the little bean sprout. Today is not a day for class. This girl obviously only came to the door for one thing:
"Are you looking at the microscope again?"
Xiao Li nodded and said:
"I made an appointment with Uncle Su the day before yesterday. I can use the microscope for two hours today."
Xu Yun suddenly smiled and raised his chin toward the door:
"That's a coincidence. Miss Li, don't go inside. Come with me and Master Qi."
Xiao Li blinked, with a hint of reluctance on his face:
"Where are we going? This is the opportunity I finally got from Uncle Su."
"Of course, go get your microscope. Damn, slow down!"
that's all.
Xu Yun and the two followed Siegfried and took a carriage to the weapon making bureau.
The Ordnance Manufacturing Bureau was established 33 years ago and is affiliated with the Ordnance Supervision, but is not responsible for the preparation of ordnance.
Its main production function is to refine ironware for non-military use.
The more common ones are iron tools such as curved shaft plows, as well as some iron axles used in high-end carriages, etc.
The other thing is iron pots or kitchen knives - these days these are all government-run businesses, and the private sector is even equivalent to privately minting coins.
Siegfried's department is a bit special.
Some R&D institutions, similar to those of later generations of large factories, do not have rigid production tasks on weekdays. They mainly focus on self-development of new iron tools and so on.
Of course.
This kind of research and development has certain constraints.
For example, only how much iron can be consumed each year, multiple people must be present during the smelting process, and scrap iron must pass multiple verification processes before it can be destroyed, etc.
The Weapon Making Bureau is located in the northeast of Royal Street. You can see some smoking iron-making furnaces in the distance, giving it an obvious rustic industrial atmosphere. (Refer to doi10.16783/j.cnki.nwnus.2009.05.007 for the architectural layout of Bianjing during the Huizong period of Song Dynasty)
In fact, Xu Yun has always been a little confused:
Why is a department like the Instrument Manufacturing Bureau, which may cause major accidents at any time and pollute the environment, not only located in Bianjing City, but also only about a mile and a half away from the imperial palace?
Not to mention how much harmful exhaust gas can be produced by four six-meter-high iron-making furnaces.
The acidic sewage produced by iron smelting alone will flow out along the Bianhe River, seriously affecting the daily life of residents in the northeastern area of Bianjing City.
It’s really strange
哐哐哐——
When Xu Yun and others walked into the manufacturing bureau.
There are a large number of shirtless strong men, using black and hard tools to hit some round and slightly elastic targets.
Siegfried explained while leading Xu Yun and others:
"Master Wang, Miss Li, this is hammering the bottom of the pot. After the hammering is completed, it can be quenched and reinforced."
Xu Yun nodded and remembered the scene of sparks flying in his heart.
This is the pinnacle of ancient Chinese skills
If I remember correctly.
Quenching technology should have appeared in the Spring and Autumn Period, and began to be widely promoted after the Western Han Dynasty. It is also a technology that is more than a thousand years ahead of Europe.
But in later generations, everything changed.
Iron ore needs to be purchased from other countries.
After all, this is an innate limitation of resources, dating back to the Neoarchean Era, and it is a situation that cannot be changed by human beings.
However, some iron-making equipment and even iron-making processes have been seized by foreign countries. For example, technologies such as FINEX have to pay patent fees to Primetals, which is a bit speechless.
It can only be said that the hole dug by a certain braid was too deep, and he was still paying off his debt a hundred years later.
Then Xu Yun and the others followed Siegfried for a while, and the surrounding voices gradually began to become quieter.
A quarter of an hour later.
Several people passed through a courtyard gate and came to a ground covering an area of nearly 300 square meters.
I only see this moment.
There is a thick iron cylinder lying on the ground, about ten meters long and about one meter in diameter.
It is hollow inside and has no other patterns carved on it.
One side of the iron cylinder is relatively smooth and simple, while the other side is much more complicated, with a large number of fine mechanisms and push grooves inside.
It's obvious.
This is the barrel of the telescope.
Siegfried led Xu Yun to the tube, pointed at it and said:
"Prince, please see if this tube is qualified?"
Xu Yun cupped his hands towards him, walked to the edge of the iron cylinder, and began to check the completion status.
Tell the truth.
The barrel of the telescope is not very complicated.
Except for the subject.
The only key structures left are the finder mirror, guide mirror and rotor clock, which are nothing more than a matter of accuracy.
Some can be accurate to seven or eight decimal places, while others can only be accurate to one or two decimal places, so the prices vary greatly.
Among them, the rotating instrument clock is mainly used to compensate for the rotation of the earth, so that the telescope is always pointed at the same area of the sky, thereby achieving stable observation results.
Nowadays, the power of rotary clocks is mainly driven by motors, and the speed is controlled by astronomical clocks or radio oscillators.
In the early rotary clocks, their power came from a chain-type weight or spring, and the rotation speed was controlled by a centrifugal governor.
The water transport instrument platform, which represents the peak of Lao Su's life, utilizes the latter principle.
When designing the layout of the telescope, Xu Yun made a simple modification of the rotary clock based on the water-borne telescope.
First, the torque was adjusted, and then a surrounding channel was made inside the barrel.
Make it an attached device.
Then Xu Yun bent down, put his right hand deep into the tube and began to fumble.
After a few seconds.
He touched three small raised plates about 30 centimeters from the wall of the cylinder.
Xu Yun twisted slightly, and an iron plate was disassembled.
Then he randomly picked up a piece of dogtail grass from the ground and inserted it along a certain gap.
At the same time, the torque is adjusted and accurately expanded to twenty times the speed through the scale.
soon.
Under the influence of the internal spring, the dog's tail grass rotates along with the platform.
"One, two, three."
Xu Yun looked at it carefully for several minutes, counting in his mind.
After a few minutes.
There was a look of satisfaction on his face.
The accuracy of this set of rotating instrument equipment is very perfect, at least it is more than enough to undertake this observation mission.
In this way.
Just let the donkey at home store a few more spinners.
Then he reinstalled the iron plate and began to examine the remaining finder scope and guide scope.
Friends who know about astronomical telescopes should all know this.
Since the field of view of the main mirror of an astronomical telescope is generally relatively small, it is often very difficult to find the observation target directly in the main mirror - because there is often no other celestial body near the target that can be used for comparison.
In order to solve this problem, later generations quickly searched for celestial objects to be observed.
Astronomers attached a small telescope with low magnification and large field of view next to the main mirror.
It's a finderscope.
Finderscopes generally use refracting telescopes, whose optical axis is parallel to the optical axis of the main mirror.
The aperture is generally around 50~100mm, the field of view is around 30°~50°, and the magnification is 7~20 times.
There is also a reticle for calibration at the focal plane, which can be modified with a scale.
While observing.
Just use the finder first to find the celestial object to be observed, and adjust the object to the center of the finder's field of view.
Because the optical axes are parallel, celestial objects will appear simultaneously in the field of view of the primary mirror.
in addition.
The primary mirror is used for long-term observation.
In order to promptly correct errors in tracking, observers will also set up a monitoring telescope next to the primary mirror.
It is the guide mirror.
The diameter, focal length and magnification of the guide scope are larger than that of the finder scope, and the field of view is smaller than that of the finder scope.
When the observation target deviates from the center of the main mirror, this situation will be reflected in the guide mirror, and it can be adjusted back to the center of the field of view in time.
However, there were many profiteers in later generations. Some popular astronomical telescopes only have one of a finderscope and a guidescope, which greatly affects the observation experience of beginners.
My eyes are returning to reality.
Xu Yun came to the Star Search Lens Department and measured the optical axes of the two mirrors through the wisdom teeth he carried with him.
"17.4 cm."
Then he came to the tail and continued the calculation.
"Also 17.4 centimeters."
Then there's the guide scope.
"Head 12.1 cm."
"The tail is also 12.1 cm."
"Completely consistent and parallel."
After the inspection is completed.
Xu Yun stood up, patted the dust on his hands, and gave Siegfried a thumbs up:
"Master Qi, there's nothing wrong with the barrel. I wonder what's going on with the mirror now?"
Seeing that the barrel passed Xu Yun's test, Siegfried relaxed his shoulders slightly and replied:
"The mirror surface is still being polished. After all, unlike the barrel body, the mirror surface is completed by a young man.
Therefore, it needs to be relatively slow. Judging from the current progress, I am afraid it will take about a week.”
Xu Yun was silent for a moment, calculated the approximate time, and said:
"Master Qi, don't be nervous, and don't ignore quality in pursuit of time.
If one week is not enough, it will be ten days; if ten days is not enough, it will be two weeks; if two weeks is not enough, it will be one month.
My boss doesn't have high requirements for the construction period. Everything is based on accuracy. Slow work will bring out fine work. ”
Then he thought of something else, glanced at Xiao Li who was staring at him eagerly, and asked:
"By the way, Master Qi, I don't know about Miss Li's microscope."
When Siegfried heard this, he immediately pointed to a room nearby:
"The microscope is ready. It's in that workshop. You can enter by pushing the door."
Xu Yun looked at him again and confirmed:
"Master Qi, is the microscope made according to the drawings I gave you before?"
Siegfried nodded heavily:
"Yes, everything is consistent with what the Young Master told me, without any deviation."
Xu Yun nodded, pondered for a moment, and said to Siegfried and Xiao Li:
"Master Qi, Miss Li, I'll go in and check first."
As the person who knows the most about microscopes, Xu Yun’s request is totally without any problems and is reasonable.
Even Xiao Li didn't say much and watched Xu Yun enter the house.
A quarter of an hour passed.
Crunch——
The door to the house was opened again.
Xu Yun walked out carrying a box.
I saw him raising the box towards Xiao Li and saying with a smile:
"Miss Li, the accuracy of the microscope is correct, but the box seems a little heavy.
How about I hold it for you and give it to the groom later? You can check it yourself when you get home? ”
A trace of excitement flashed in Xiao Li's eyes, and he nodded quickly:
"That's very good, thank you very much."
Seeing this, Xu Yun put down the box and raised his hand towards Siegfried:
"Master Qi, there are still some things in the house. Now that there are no problems in all aspects, the boy will leave first. I hope Master Qi will take care of the remaining lenses."
Siegfried quickly returned the gift:
"Don't worry, Mr. Wang, I will keep this in mind and I will not make any mistakes."
Then he accompanied Xu Yun and the others back along the original road and sent them outside the door.
Xu Yun handed the box to Xiao Li's driver and said goodbye to Xiao Li on the spot.
Da da da——
Looking at the carriage gradually going away, Xu Yun sighed slightly:
"Sorry, Lao Li" (End of Chapter)