Great Song

The Taixue exam is over, but it will take some time for the serious Chunwei.Whether it is scholars from all walks of life who are going to Beijing to rush for the exam, or wealthy businessmen and nobles who are gearing up to catch their sons-in-law at the bottom of the list, nothing is more concerned about the upcoming Ritual Examination.And those who don't have to take the exam, the things they care about are a little weird.

Cheng Yi stared at the thin book on the table, unable to turn a page for a long time.He has seen the things in it countless times, but it is really hard to say whether he understands it.This article is a new publication of Baoying Temple, and it has just come out to the second issue.However, unlike the atmosphere and alchemy in the first issue, a lot of new things have been added this time.

First, Ling Xiaozi and Chi Liaozi jointly wrote the "Erysipelas Theory", which described the toxicity of several elixirs that were often encountered during the alchemy process, and the toxicity verification made on small animals.There are detailed descriptions of the pathology of lead, mercury, sulfur, cinnabar, saltpeter, brine and other substances, and Cheng Yi feels cold all over his body.He had really touched mercury for a period of time in order to measure atmospheric pressure before, but now thinking about it, he regrets it.However, it's hard to blame Meng Xisheng, after all, they also said that mercury is very poisonous, so it's not easy to try it.

After this fatal article, there is an article by the imperial physician Qian Yi, which is about the usage, curative effect and contraindications of the suction tube.Nowadays, as the theory of atmospheric pressure spreads, the suction cylinder method is also all the rage in Tokyo.However, who would have expected that the suction tube used to extract toxins has so many disadvantages, and it is not suitable for treating boils, ulcers and other wounds at all.If the suction tube is sucked for too long and blisters are formed, it should be treated well to avoid infection with external pathogens.This article is written in detail and rigorously, and there are many cases, which are really convincing. Even Cheng Yi feels that he has benefited a lot.

The next two chapters are a headache.One was about water conservancy, and it was written by an unknown man named Shan Tangsheng.The whole article is about the levers and axles used on the water mill, explaining how to build the waterwheel so that the waterwheel can run more efficiently and quickly.However, the things listed as "formulas" made Cheng Yi feel a dull pain in his forehead, and he really couldn't understand how a mere water wheel was involved in such difficult calculation problems as the circle cutting technique?

Skip this article, and the next one is the new work of old acquaintance Meng Xisheng.Originally, Cheng Yi was still a little interested, and wanted to see if Meng Xisheng had any new insights.Unexpectedly, watching all the way, I was suddenly dizzy.This article is different from the essays he published in "Ri Xin Bao", and it is also quite different from the discussion of air pressure in "Mengxi Bi Tan". Instead, it gives a concept of "density".It is said that all things are different inside, some are sparse and some are compact, so there are differences in severity.To calculate density, simply divide the weight of the object by its volume.

After writing this, Cheng Yi can still understand it. This method is not much different from what is said in "Sun Tzu's Mathematical Classics", and he has learned it before anyway.But the content behind it is a big headache.Meng Xisheng actually listed several formulas, explaining how to calculate the density and volume of an object, whether it is hollow or solid, and whether there are other impurities mixed in.This led to the theory of "buoyancy", which states that the buoyancy of a liquid is related to its density and how it is affected by air pressure.

Looking at the pages of extremely boring descriptions, Cheng Yi was in a daze back to the time when he was learning math.In addition to being dizzy, he was also a little dazed, wondering if he was too stupid, why he couldn't even understand what was written in black and white.

How can such a good essay be written like this?What is the use of those formulas? Why do they have to be written in such a tedious and detailed way?

What's more terrible is, what exactly is this "Theory of Creation" trying to do?In the first episode, Cheng Yi saw his intentions at a glance.This is the Mr. Tongxuan from Baoying Temple, who wants to use the tabloids to make a name for himself and establish his status as a school of fortune.Therefore, several articles are all about alchemy, and there is no lack of general remarks.Although it is weird to read, it has a strange persuasive power, and it is inevitable that people will want to take a peek and find out the magic of the "Thunder Lord".

But this idea was smashed to pieces in the second issue.It's so inexplicable!If the suction tube is also related to medical skills, then the water conservancy and density are really confusing.This looks like "Nine Chapters of Arithmetic", which can sum up daily problems into arithmetic to solve difficult problems, which is a bit close to technology.But unfortunately, it is written too detailed and rigorous, involving many things that have never been thought of, and it seems to contain the truth.It is the relationship between density and air pressure that Cheng Yi has to pay attention to.

But what does this have to do with Baoying Temple?

Sitting blankly at the desk for a long while, Cheng Yi finally pinched the bridge of his nose with difficulty and closed the book.No matter what Ling Xiaozi wants to do, it has nothing to do with him now.Too much contact with these miscellaneous sciences will hinder his pursuit of knowledge, so it is better to continue to deduce the most important things.

That's right, ever since the word "gravity" appeared, Cheng Yi felt something was wrong.After thousands of parabolic jumps and flipping through the classics, he gradually cleared up his thoughts.This statement is probably related to the "Earth is like a chicken" in the "huntian theory".Although the round sky and the earth have been around for a long time, since Zhang Heng in the Eastern Han Dynasty put forward the saying that "the sky is like a chicken, and the earth is like a yellow in the chicken, living alone in the sky", "the theory of the sky" has gradually been accepted.It's just that no one has thought carefully about how everything will be attached to the surface if the earth is in the shape of a circular arc.And this "gravity" is the best supplement!

What if we combine this with "Tianli"?Although the air pressure is weird, and the vacuum is also a headache, but everything is bound by the law of heaven, which is not a bad thing for his theory.

Now Cheng Yi has also rearranged a set of theories, including "the earth is like a chicken" and "gravity".It was just that he was a little afraid that Meng Xisheng would throw out some remarks that would ruin his own research, so he didn't rush to make it public.

However, sharpening a knife does not cost woodcutters, as long as he carefully perfects his own theory, he can always come up with an answer that is in line with the principles of nature.This is the original meaning of "studying the principles of heaven".

How can such an important matter be disturbed by foreign objects?

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"Brother Cunzhong, the sales volume of the second issue of "On Good Fortune" is not as good as the first issue." Facing Shen Kuo, Zhen Qiong couldn't help complaining, "Is it because our writing is too difficult for others to read? understood?"

His "Erysipelas" is of course no problem, as long as it is alchemy, it should be bought and read, but the writings of Shen Kuo and Su Song are too complicated, with so many formulas, it is uncertain how many people will read it I don't understand.

Shen Kuo coughed when he heard the words: "This is a bit biased. Isn't it approaching Chunwei now? Scholars are all reading with their eyes closed, which will definitely affect sales. Moreover, the first volume has already been sold in Tokyo, so naturally it will become more and more popular." Isn't it more?"

His "Mengxi Bi Tan" and Zhen Qiong's "Theory of Good Fortune" both spread out along with the Han family's shop.At least Xiangzhou, Yingtianfu, and Liangzhe Road are not worried about selling.Now the new issue is just a little bit late.

Su Song also laughed and said: "The writing method of "Theory of Good Fortune" is much simpler to write the truth. People like me and Cunzhong who know astronomical calculations can understand it at a glance, and it will be spread in the future. It might be possible to start a sect.”

He also saw the novel way of writing articles in "Theory of Creation", so he rolled up his sleeves and wrote an article.And how much he has gained in the past year in the Military Weapons Supervision, if it is not for some confidentiality, it is not convenient to write, and he can write several more articles.

Zhen Qiong breathed a sigh of relief for the words "establishing a sect and establishing a sect", and muttered, "I'll just say this way of writing is fine. Su Zizhan always complains that the writing is cumbersome and meaningless. I really have no vision!"

These words made both of them laugh, and Shen Kuo comforted, "Zizhan is so talented, so he naturally doesn't like to read such articles. It just so happens that he's not here, so we can talk about important matters."

A few days ago on the Lantern Festival, the emperor wanted to place lanterns in the palace, and he wanted four thousand lanterns at one go, which almost wiped out all the lanterns in the entire Tokyo city.Su Shi couldn't see it too far, and immediately went to the book to persuade him.The emperor was quite ashamed after reading his playbook, and even recruited him into the palace to ask questions.Now Su Shi is in good spirits. These days, he has been immersed in writing memorials at home, but he has no time to come and have a banquet.

Zhen Qiong didn't care about the foodie, she immediately regained her spirits: "What's the matter?"

Su Song smiled slightly: "Recently, I'm researching escapement. If we set up a set of pivot balances and grid forks, and a set of pivots and closing tongues, and connect them with levers in the middle, and drive the axles with water power, one escapement and one escapement can be achieved. It made the wheel shaft go round and round, replacing the clepsydra for timekeeping. And as long as the water flow doesn't stop, the timekeeping can be more accurate. Later, I discussed this with Cunzhong, and I thought that besides water power, it seems that other forces can be used to drive this thing .For example, if you pull a chain and hang a copper ball below it, and when you swing it from side to side, the force is the same, won’t it also drive the escapement mechanism?”

"Ah?" Zhen Qiong was at a loss, "Brother Zirong wants to make a new timer?"

What's the big deal?

Su Song shook his head: "It's not about timing, but the suspension made me think suddenly. Haven't we always wanted to prove the rotation of the earth? If there is a suspension cone with a heavy enough weight, hanging in the air with a long cable, Make its tail close to the ground, and spread fine sand on the bottom. The pendulum rotates endlessly, what will be the pattern drawn?"

Zhen Qiong hissed: "Could it be possible to draw a circle?!"

"If the earth rotates, the hanging cone will deviate with the rotation, and the final drawing must be a circle!" Su Song replied firmly with his eyes shining.

Shen Kuo also nodded again and again: "Before I also placed a wooden stick in the water basin, marked the scale on the side of the basin, and covered the surface of the basin with paper. After one night, the direction of the wooden stick will be deflected a little, presumably because the earth rotates The reason. But this method takes too long, and the changes are subtle, and I always feel that it cannot convince the public. Brother Zirong's method is more intuitive."

Even Zhen Qiong had never seen such a spectacle before, so she couldn't help but yearn for it, and urged: "What are you waiting for? Why don't you hurry up and make this pendulum?"

The two looked at each other, and Su Song said with a smile: "It's not difficult to make this thing, but how to tell the world, but it's a bit undecided. Didn't I ask you to discuss it?"

What are you discussing?How does he know how to do this thing.But soon, Zhen Qiong came to her senses and slapped her thigh: "I have to discuss this matter with Brother Miao!"

The author has something to say: This is the famous Foucault pendulum experiment, which verified the rotation of the earth, and there are many imitation models in astronomical museums around the world.The escapement mechanism is the core component of a clock, and the world's first record of using the escapement method is the water transport instrument platform built by Abbot Su Song.