Into Unscientific

In the astronomical world of later generations, there are many types of astronomical telescopes.

According to the technical principle, it can be divided into many models:

Such as reflecting telescopes, refracting telescopes, radio telescopes and so on.

The first astronomical telescope in human history made by Galileo was a very standard refracting telescope.

The modern Hubble telescope is also a refracting telescope, but its diameter has reached the human-made limit of the entire optical mirror.

The James Webb telescope is a reflecting telescope.

As for the radio telescope

This is relatively rare.

For example, the sky eye in our local mountainous area is a radio telescope, and the ticket is only 50 yuan.

As for the astronomical telescope Xu Yun mentioned, it is naturally a reflecting telescope, which is also the most frequently used telescope in later generations.

But no matter how simple the hand rubbing process is, there is one link that cannot be avoided:

That is, the calculation of data.

Small to the most basic imaging focus,

The effects of moderate to atmospheric disturbances,

It is big enough to optimize human flesh through the axial spherical aberration curve.

Almost every process requires mathematical calculations.

Of course.

Xu Yun, as a professional who has been engaged in scientific research for two lifetimes, the calculation of these data is not difficult for him.

As long as a few basic data are needed, it can be calculated even with eyes closed.

but the problem is

Does it make sense to do so?

Science knowledge does not need to be memorized like liberal arts, especially for professional research and development, cramming education is meaningless.

Because the field of research and development needs to be constantly updated and iterated, that is to say, practitioners must have the ability to operate.

The preparation of allicin was for emergency, so Xu Yun didn't have time to clarify the deeper knowledge.

But right now it is a normal physics teaching situation, if everything is explained clearly, it may not be a good thing for Lao Su and others.

Even in the teaching of later generations, sometimes the teachers would personally ask the students to do experiments to verify the phenomenon.

Hands-on operation, use practice to break through cognitive barriers.

This is much, much better than pure one-way knowledge indoctrination.

So this time, Xu Yun chose to be a rare person.

He pondered for a moment, then said to Old Su:

"Master, according to the manuscript left by the Fenglingyue Shadow Sect, the structure of the telescope and the microscope is not much different.

Both need to use the objective lens and eyepiece, just focusing. That is, the precision of the mirror is somewhat different.

But unfortunately.

The record of the telescope in the Codex only ends here, and the latter part was accidentally lost.

The second half is precisely the most critical link in the production process, involving a lot of calculation and deduction, some necessary precision is lost, and the telescope is... alas. "

Old Su couldn't help frowning. As a big guy who has done combined engineering, he naturally understands what the precision data means:

"Xiao Wang, why is the data lost?"

Xu Yun sighed when he heard the words, as if recalling some regrettable things, he explained:

"It is rumored that in a certain month in a certain year, the sage Shi Hao was calculating whether it was possible to cut off the time. Unexpectedly, a man with long red hair suddenly broke into the sect, and took away the second half of the manuscript and the sage Shi Hao's favorite milk. Can.

Since then, Shi Hao's heart has died and he has returned to seclusion, avoiding the world and not being recorded in ancient history."

After hearing Xu Yun's words, a trace of regret appeared on Lao Su's face.

Throughout the history of the early dynasties, there were as many talents as stars in almost all dynasties who retired to the fields because of discouragement.

Some, like Tao Yuanming, lived indifferently and unrestrainedly after retiring, leaving behind a stalwart figure who is open-minded among mountains and rivers for later generations.

Some just left one or two footprints and handprints like Wang Rong, and are occasionally sighed by later generations.

And many more are penniless, and all traces disappear with time.

I can only vaguely glimpse their names once or twice in the reclusive county annals, and most of them will add the words "unknown birth and death" after them.

at the same time.

Old Su thought of his good friend, another old Su——Su Shi.

Brother Zizhan is now resettled in Danzhou (that is, Hainan in later generations), and I don't know how he is now?

I heard that in another year, the emperor may issue an amnesty. I hope that brother Zizhan will be merciful by the grace of heaven.

Afterwards, Old Su brought his thoughts back to reality, and put his thoughts on the astronomical telescope.

For such an "artifact", he really didn't want to give up.

Then he thought for a moment, and with some expectation, he said to Xu Yun:

"Xiao Wang, although the handbook on the telescope has been lost, you still remember the structure of the object, right?"

Xu Yun pretended not to understand the purpose of this sentence, and nodded obediently:

"That's right."

When Old Su heard this, a gleam flashed in his eyes.

He was silent for a moment, as if he had made up his mind, and solemnly said to Xu Yun:

"Xiao Wang, if you can provide enough property and calculations, is it possible to rebuild an astronomical telescope?"

Xu Yun groaned softly, with a trace of solemnity on his face:

"While the accuracy data for objects needed for astronomical telescopes has long been lost, the axiomatic basis for surveying accuracy remains.

If we can find some manpower and complete materials, it is not impossible to make an astronomical telescope by combining the axioms and deduction.”

Hearing Xu Yun's words, Old Su's eyes immediately showed joy, and he turned around to look at Xiao Li and Xiao Zhao.

After a while.

Old Su took a deep breath, made up his mind, and said decisively to Xu Yun:

"In this case, I will try it later to see if I can restore the astronomical telescope again!

It's a pity that such a device that can make mortals look up at the sky is buried so silently. "

After speaking, he paused, and continued to say to Xu Yun:

"Xiao Wang, I don't know who or what is needed to make an astronomical telescope?"

Xu Yun thought for a while and said:

"First of all, it is natural to be a mirror maker, and also to be a master in the world.

Whether it is a microscope or an astronomical telescope, the real core is actually the objective lens and the eyepiece.

Especially for telescopes, if the precision of the glass mirror is high enough, you can cut a piece of bamboo to make the mirror body.

Therefore, high-quality glass raw materials and craftsmen are essential. Of course, further processing and polishing are required in the follow-up.

By the way, there is also the donkey that has to be prepared. "

In the weird DIY circle of later generations, rubbing binoculars by hand is a very common thing.

The degree of commonality is even much higher than that of hand rubbing generators.

After all, self-made generators are generally useless, but self-made telescopes can see the distance or the stars.

Therefore, in the DIY circle, airplane cups and binoculars are basically the two most common types of items.

There are generally three ways to make your own telescope:

One is to directly buy parts from a certain package and assemble them yourself, that is to save a brand fee and processing fee.

The second is to buy a cheap convex lens by yourself, grind the lens for silver mirror reaction, and grind and assemble the whole process.

The third is to list the equations through Gaussian optics, and use the three surface curvatures as variables to calculate the spherical aberration coefficient, which is the standard pure hand rubbing.

Of course.

The third method seems to be mainly based on calculations, but when making and grinding lenses, the higher the requirements for manpower and materials, the better.

So after listening to Xu Yun'e's request, Old Su pondered for a moment, then turned to Xiao Zhao:

"His Royal Highness, I'm afraid I need to trouble you this time."

With his hands behind his back, Xiao Zhao readily agreed:

"No problem, the craftsman who makes the utensils can be handed over to the king, and the required materials will also be listed. It will be assembled within seven days."

Hearing this, Xu Yun quickly cupped his hands towards Xiao Zhao:

"Then there will be His Royal Highness King Lao Jian."

"Is there any work?"

Xiao Zhao raised his eyelids and glanced at Xu Yun, with a slightly sarcastic smile on his lips.

But it seemed that he had restrained himself, and in the end he didn't speak.

Now that Zhao Ji has just ascended to power, apart from a few confidantes, there are hardly any trustworthy high-ranking people in power.

Although the handover process of the throne was relatively peaceful, everything seemed to be going smoothly.

But for the royal family, the court has no one of its own, which can basically be directly tantamount to danger.

Even Zhao Ji, the faint king of later generations, is quite sensitive in this environment.

Therefore, if Xiao Zhao took the initiative to propose, he would need craftsmen and property to create a plaything for watching the stars, and the whole process would be completed under Song Huizong's nose.

Then Song Huizong not only would not refuse, on the contrary, he might double meet Xiao Zhao's request and give him whatever he wanted.

After all, looking at all the brothers, Xiao Zhao is the one who has the greatest potential threat to him.

If he is addicted to playing around, it means that Zhao Ji can have more energy to develop his confidants.

No matter how bad it is, you can get more power from the queen mother.

Actually.

This is also one of Lao Su's goals. I hope that the relationship between the two brothers of Emperor Zhezong can be eased to friendship as soon as possible.

only

is it possible?

Think here.

Old Su let out a sigh of relief, forcing himself to stop thinking about these political issues.

After all, I have already resigned from office and retired from office. Some things are just done out of emotion, and there is no need or energy to participate too much.

Then he looked at Xu Yun and asked:

"Xiao Wang, apart from property and craftsmen, what else do you need to prepare?"

Xu Yun glanced at Lao Su who had an expression of 'my family is quite big, you can say it', pondered for a moment, and replied:

"In addition to finance and craftsmen, there is only a little left"

"That point?"

"A master who knows how to calculate and deduce!"

"Anathematical deduction?"

Old Su repeated the word, not too surprised.

After all, Xu Yun said before that the accuracy of the telescope must be calculated before it can be prepared.

Although everyone at the moment has basic arithmetic knowledge, they obviously still have a certain distance from the series of preparation calculations.

Even Lao Su himself doesn't have a particularly deep understanding of mathematics.

This is also a very common phenomenon in later generations. Top physicists actually have very little intersection with top mathematicians.

The mathematical literacy of many physicists is simply better than other people except mathematicians.

This is still true for later generations with a complete system of mathematics and physics, let alone ancient China.

It is impossible for even Lao Su to dabble in two of the most profound science majors at the same time.

Then Lao Su thought for a while, and a figure suddenly flashed in his mind.

His expression was shocked, and he said to Xu Yun:

"Xiao Wang, I have a good friend named Han Gonglian, known as Mr. Yang Huai.

In the early years, when the old man was ordered to inspect the armillary sphere used by the Taishi Bureau, he had met this person by chance.

This person is very fond of math and deduction all his life, and his ability to count is extraordinary, even ranked among the top five in Beijing.

Right now I am studying mathematics in Beijing, if the old man asks, he will be willing to help! "