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Chapter 154 Everything is Ready, Only Dongfeng Is Owned (6.8K)

After getting a relatively satisfactory answer.

Xu Yun walked out of the courtyard and called Mr. Xie to take care of him.

Let him find a few servants and maids, and put Xiao Zhao and Xiao Li in the guest room respectively.

Early the next morning.

Xiao Zhao was the first to wake up from his drunkenness.

"His Royal Highness Jane."

After Xiao Zhao put on his clothes, he just went out.

Xu Yun, who had already been waiting outside the courtyard, stepped forward quickly, cupped his hands towards Xiao Zhao, and said with a smile:

"I wonder if His 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 alcohol is really strong"

Before Xu Yun could answer, Xiao Zhao thought of something.

With a flash in his eyes, he took the initiative to ask him:

"By the way, Mr. Wang, did this king ever get drunk and make a slip of the tongue yesterday?"

When asking this sentence, Xiao Zhao's tone seemed casual, but his expression was slightly nervous.

After all, although he is good at drinking, he is rarely really drunk.

In most cases, it's just acting.

When he learned that Xu Yun had good wine yesterday from Wang Ting's mouth, he thought it was at most similar to the bottled incense in the palace.

That is about twenty degrees in later generations.

The result was unexpected.

Xu Yun's alcohol content was so high that it far exceeded his expectations.

However, the wine tasted very mellow when he first tasted it, so he drank a few more sips without noticing it.

After the strength of the wine came up, the whole person began to feel dizzy, and Radu couldn't come back.

Although Xiao Zhao knew that his wine was not bad, he was afraid of everything.

It would be terrible if something was said.

But soon.

Xu Yun's answer made him breathe a sigh of relief:

"His Royal Highness, you are asking the wrong person.

Caomin's alcohol strength is shallow, and he became dizzy after two cups, and he was the first to pass out yesterday.

However, Cao Min seemed to vaguely remember what Miss Li said to you before she fainted, "Your Highness should be punished for a drink because he has been absent for a few days" and so on."

Xiao Zhao was taken aback when he heard the words, and then nodded thoughtfully, with a relaxed expression visible to the naked eye:

"I do remember saying something like this, hey, Miss Li has such a temperament, she likes to make trouble when she's drunk.

That was the case with the song "Like a Dream" at the beginning."

Xu Yun could only laugh awkwardly.

Then Xiao Zhao chatted briefly with him for a while, and after confirming again and again that he hadn't said any dirty words, he hurriedly said goodbye and left the Su residence. .

Although the queen mother has passed the most dangerous stage now, Xiao Zhao no longer has to stay in the palace all the time.

But as a junior, I still have to go to please the Queen Mother every day.

Xu Yun turned around and went to another courtyard, preparing to give math lessons to old Jia Han Gonglian and others.

few days ago.

After calculating the tilt factor of the lens, the amount of calculations on Lao Jia and others has been greatly reduced.

But Xu Yun did not let them go.

Instead, he persuaded Lao Su to give Liu Yi the identity of his disciples, and continued to impart advanced mathematics knowledge.

These include symbols, names that are not limited to modern mathematics, and some related to binomial equations, namely .

class calculus.

It's still the same sentence as before.

Although the level of mathematics in the Song Dynasty was very high, it still did not have the systematic basis for a complete derivation of calculus.

For example, before Mavericks deduced calculus in later generations, the foundation of the European mathematics community was already very solid-compared to that era,

First, there is the product quotient theorem of two functions proposed by the teacher Barrow, and at the same time, there are infinitesimals and a large number of previous guesses and deduction results as the cornerstone.

With the accumulation of all the above, Mavericks deduced calculus.

Although a genius, it does not violate the laws of mathematics.

This was not the case in the mathematics circles of the Song Dynasty, which seriously lacked accumulation in this area.

Even if Xu Yun really came up with calculus, it can only be regarded as spoiling the seedlings.

Therefore, what Xu Yun can do is to inform Lao Jia of the small number of relevant variables in the entire calculus system.

Try to plant some seeds for the local mathematics community in this time and space, such as how difficult the college entrance examination is by 20 or 30 points.

that's all.

In the alternation of teaching Lao Jia, Xiao Zhao Xiaoli, and Lao Su.

Twenty days passed in a flash.

Early this morning.

Xu Yun finished his morning routine and just walked out of his hut while yawning, when 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 hurriedly stepped forward and gave him a junior courtesy:

"Master Qi, why are you here? Could it be that the telescope is about to be made?"

Siegfried smiled and bowed to him, nodded, and replied:

"My lord, about 80% of the preparation of the telescope has been completed. I came here today because I want to ask you to go to the Manufacturing Bureau for a check."

Then he paused, seemed to think of something again, and added:

"By the way, Miss Li's microscope has been completed, and you can also pick up the goods by the way."

Only then did Xu Yun nodded in understanding.

Considering the large size of the telescope and the need for a lot of professional equipment to make it, the old Su family is obviously not suitable.

After many discussions, the production location was finally arranged in the Device Manufacturing Bureau.

Of course.

In addition to this apparent reason, there is another underlying reason:

The whole process needs to consume more than five tons of iron.

To know.

Iron is an important military material in ancient China.

If this iron flowed into private hands, it would be enough to arm a large army.

Therefore, from the perspective of stability, the entire production process must also be carried out under the nose of Song Huizong.

The only thing that took place in the whole process was the making of a mercury paraboloid in Lao Su's house.

This mercury paraboloid Xu Yun finished making a few days ago, and it is currently stored in a closed and low-temperature environment, ready to be used at any time.

That is.

Siegfried was mainly responsible for the tube body, the spherical lens and the related links of changing the hydrodynamic instrument platform into a rotating instrument clock.

Afterwards, Xu Yun simply took care of his clothes, and followed Siegfried to go to the Toolmaking Bureau.

It's a coincidence.

As soon as the two of them reached the gate of the Su Mansion, they saw Xiao Li approaching him.

"Miss Li."

Xu Yun hurriedly stopped the little bean sprouts. Today is not a day for class, and this girl obviously only has one thing to do when she comes to the door:

"Are you looking at the microscope again?"

Xiao Li nodded and said:

"I made an appointment with Uncle Su the day before yesterday, and today I can use the microscope for two hours."

Xu Yun smiled immediately, and pouted his chin towards the door:

"That's such a coincidence, Miss Li, don't go in, start with me and Master Qi."

Xiao Li blinked, with a hint of reluctance on his face:

"Where is this going? I managed to get the opportunity from Uncle Su."

"Of course go get your microrod, slow down!"

that's all.

Xu Yun and Xu Yun followed Siegfried and arrived at the Equipment Manufacturing Bureau in a carriage.

The Weapon Manufacturing Bureau was established 33 years ago and is affiliated with the Military Weapons Supervision, but it is not responsible for the preparation of military weapons.

Its main production function is to refine non-military ironware.

The more common ones are iron implements such as curved shaft plows, and some iron axles that are used in high-end carriages.

The other is iron pots or kitchen knives-these are all government-run businesses these days, and private ones are even equivalent to private coins.

Siegfried's department is a bit more special.

Some research and development institutions, similar to later generations of big factories, do not have hard production tasks on weekdays, mainly self-developed new types of ironware and so on.

Of course.

This development has certain constraints.

For example, how much iron can only be consumed each year, multiple people must be present during the smelting process, and scrap iron must pass through multiple procedures before it can be destroyed, etc.

The location of the Manufacturing Bureau is in the northeast of Yujie Street, and some smoking iron furnaces can be seen from a distance, with an obvious earth-made industrial atmosphere. (Refer to doi10.16783/j.cnki.nwnus.2009.05.007 for the architectural layout of Bianjing during the Song Huizong period)

In fact, Xu Yun has been a little puzzled:

Why is the Bureau of Equipment Manufacturing, a department that may cause major accidents and pollute the environment at any time, not only set up in Bianjing City, but also only about a mile and a half away from the imperial palace?

Not to mention how much harmful waste gas can be produced by four six-meter-high ironmaking furnaces.

The acidic sewage produced by ironmaking alone will flow out along the Bianhe River, seriously affecting the daily life of residents in the northeast area of ​​Bianjing City.

really strange

bang bang bang——

When Xu Yun and the others walked into the Equipment Bureau.

There are a large number of shirtless strong men, using black and hard tools to hit some round, slightly elastic targets with force.

Siegfried explained while leading Xu Yun and others:

"Prince Wang, Miss Li, this is hammering the bottom of the pot. After the hammering is complete, it can be quenched and strengthened."

Xu Yun nodded, remembering the scene of sparks flying everywhere in his heart.

This is the peak skill of ancient China

If I remember correctly.

Quenching technology should have appeared in the Spring and Autumn Period, and it 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, which can be traced back to the Neoarchean, and it is a situation that cannot be changed by humans.

However, some ironmaking equipment and even ironmaking processes have been seized by foreign countries. For example, FINEX has to pay patent fees to Primetals, which is a bit speechless.

It can only be said that the pit dug by a certain braid is too deep, and the debt will be paid until a hundred years later.

Then the three of Xu Yun followed Siegfried and walked for a while, and the surrounding voices gradually became quieter.

In a quarter of an hour.

Several people passed through a courtyard gate and came to a ground covering an area of ​​nearly 300 square meters.

Only at this moment.

There was a thick iron cylinder on the ground, about ten meters in length and about one meter in diameter.

The interior is hollow, and no other patterns are engraved on the body.

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 slots inside.

It is clear.

This is the barrel of the telescope.

Siegfried led Xu Yun to the tube, pointed at it and said:

"My lord, can you 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.

be honest.

The barrel of the telescope is not very complicated.

Except for the subject.

The key structures are the finder mirror, the guide mirror, and the rotator clock, which are nothing more than a problem of accuracy.

Some can be accurate to seven or eight decimal places, while others can only be accurate to one or two decimal places, and the prices are therefore very different.

Among them, the rotating instrument clock is mainly used to compensate for the rotation of the earth, so that the telescope is always aimed at the same sky area, so as to achieve the effect of stable observation.

Now the power of the rotary instrument clock is mainly driven by a motor, and the speed is controlled by an astronomical clock or a radio oscillator.

The early rotary clocks were powered by chain-type weights or springs, and the rotation speed was controlled by a centrifugal governor.

The astronomical platform representing the pinnacle of Lao Su's life uses the latter principle.

When designing the layout of the telescope earlier, Xu Yun made a simple modification to the rotating instrument clock on the basis of the astronomical observatory.

Firstly, the torque was adjusted, and then a surrounding channel was made inside the barrel.

making it an attached device.

Then Xu Yun bent down, his right hand went deep into the barrel and began to grope.

After a few seconds.

He touched three raised small 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 the scale is accurately expanded to twenty times the speed.

soon.

Under the action of the internal clockwork, the dogtail grass began to rotate along with the stage.

"one two three."

Xu Yun watched it carefully for a few minutes, keeping count in his heart.

A few minutes later.

There was a look of satisfaction on his face.

The precision of this set of rotoscope equipment is perfect, at least it is more than enough to undertake this observation task.

In this way.

Just ask the donkey at home to store a few more turntables.

Then he reinstalled the iron plate and began to inspect the remaining star finder and guide mirror.

Friends who know about astronomical telescopes should know it.

Since the field of view of the primary mirror of an astronomical telescope is generally relatively small, it is often very difficult to find the observation target directly in the primary mirror—because there are often no other celestial bodies that can be compared with the target near the target.

In order to solve this problem, later generations quickly searched for celestial bodies to be observed.

Astronomers attached a small telescope with low magnification and large field of view next to the primary mirror.

It is the finderscope.

The finder mirror generally adopts a refracting telescope, and its optical axis is parallel to the optical axis of the primary mirror.

The caliber is generally about 50-100mm, the field of view is about 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.

When observing.

Just find the celestial body to be observed with the star finder first, and adjust the celestial body to the center of the field of view of the star finder.

Because the optical axes are parallel, celestial bodies will also appear in the field of view of the primary mirror synchronously.

in addition.

When the primary mirror is observing for a long time.

In order to correct the error in tracking in time, the observer will also set up a monitoring telescope next to the primary mirror.

It is the guide mirror.

The aperture, focal length and magnification of the guide mirror are larger than that of the star finder, and the field of view is smaller than that of the star finder.

When the observation target deviates from the center of the main mirror, this situation can be reflected in the guide mirror, and it can be adjusted back to the center of the field of view in time.

However, there are many profiteers in later generations, and some popular astronomical telescopes only have one of the finder mirror and the guide mirror, which greatly affects the observation experience of beginners.

The line of sight is returning to reality.

I saw Xu Yun came to the head of the star finder lens and measured the optical axes of the two mirrors through the wisdom teeth he carried with him.

"17.4 centimeters."

Then came to the tail and continued to calculate.

"Also 17.4 cm."

Then there's the guide mirror.

"Head 12.1 cm."

"The tail is also 12.1 centimeters."

"Exactly the same, parallel."

After inspection.

Xu Yun stood up, patted the dust on his hands, and gave Siegfried a thumbs up:

"Master Qi, the body of the barrel is fine, what's the matter with the mirror?"

Seeing that the barrel passed Xu Yun's inspection, Siegfried relaxed his shoulders slightly and replied:

"The mirror surface is still being polished, after all, unlike the barrel body, the mirror surface was completed by Xiao Lao alone.

Therefore, it should 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, don't neglect quality in pursuit of time.

Ten days if a week is not enough, two weeks if ten days are not enough, and one month if two weeks are not enough.

The master does not have high requirements for the construction period, everything is based on precision, and slow work produces meticulous work. "

Then he thought of something else, glanced at Xiao Li who was staring at him eagerly, and asked again:

"By the way, Master Qi, I don't know Miss Li's microscope."

When Siegfried heard this, he immediately pointed to a certain room next to him:

"The microscope has been made. It's in that workshop. You can enter by pushing the door."

Xu Yun glanced at him again and confirmed:

"Master Qi, the microscope is made according to the drawings I gave you earlier, right?"

Siegfried nodded heavily:

"That's right, everything is consistent with what the young master explained, without the slightest deviation."

Xu Yun nodded, pondered for a moment, then said to Ziegfeld and Xiao Li:

"Master Qi, Miss Li, I'll go in and check first."

Xu Yun, as the person who knows the microscope best, made the request without any problem at all, which was reasonable.

Even Xiao Li didn't say much, and watched Xu Yun enter the house.

A quarter of an hour passed.

crunch——

The door of the house was opened again.

Xu Yun came out carrying a box.

He raised the box towards Xiao Li and said with a smile:

"Miss Li, the microscope is accurate, but the box is a bit heavy.

I'll hold it for you, and I'll give it to the groom later, and you can check it yourself when you get home, how about it? "

A trace of excitement flashed in Xiao Li's eyes, and he nodded quickly:

"That's great, thank you very much."

Seeing that, Xu Yun put down the box, and cupped his hands at Ziegfei:

"Master Qi, there are still some matters in the mansion. There are no problems in all aspects at the moment, so the kid will leave first, and Master Qi should take care of the rest of the lenses."

Siegfried hurriedly replied:

"Don't worry, Mr. Wang, I will keep this matter in mind, and I will definitely not make mistakes."

Then he accompanied Xu Yun and the two back along the original road, and sent them outside the door.

Xu Yun handed the box to Xiao Li's coachman, and said goodbye to Xiao Li on the spot.

Da da da--

Seeing the carriage gradually going away, Xu Yun sighed slightly:

"I'm sorry, Lao Li"