Great Song

These words caused the two to look over at the same time.Shen Kuo raised his eyebrows in surprise, while Su Song lowered his face and asked, "What is the 'earth' that Ling Xiaozi said?"

ah?What kind of problem is this?Zhen Qiong raised her foot and stepped on the floor blankly: "Isn't what we are stepping on the earth?"

Although it is impossible to imagine the whole picture of the land under our feet, the moon seen in the skyscope is also a sphere.Thinking about the New Year's Eve, the sun is generally the same.The earth is round, it must be true!

This incomparably calm answer made Su Song silent for a moment, and suddenly said: "The sky is like a chicken, the celestial body is round like a bullet, and the earth is like a yellow chicken, living alone in the sky. According to the sky, the earth may be round. But then Who told you that the earth revolves around the sky? Could it be the theory of Xuan Ye?"

Su Song has an in-depth understanding of astronomy, so he naturally knows the sayings of various schools of thought.The earliest "Gaitian theory" is called "the sky is round and the place is", and the sky is called cover.However, after studying "Sea Island Calculus", you will know that the land has a curvature, and the "Gaitian theory" will be self-defeating.The "huntian theory" is a statement that both he and Shen Kuo agree with, and it is also orthodox today.In short, the sky is a sphere, and the earth is in it, just like the yolk in a chicken egg.The sun, moon and stars all rotate on the sky, forming the four seasons.As long as you look at the armillary sphere, you should know the principle of the armillary sky.

But in addition to these two, there is another theory that is not very fashionable, which is the "Xuan Ye theory".This saying comes from "Zhuangzi" "The sky is blue, is it righteous and evil? It is far away and nothing is extremely evil?" It is said that the sky is endless, and the sun, moon, and stars all float in the air and have their own trajectories. Suspended on a "dome".This theory, combined with "vital qi", says that all things evolve from qi and are born from qi.Therefore, it is also respected by Taoism.

It's just that the "Xuan Ye theory" does not explain the rising and setting of the sun, the moon, and the movement of the stars, but only quotes the records of the "Huntian theory".For a person like Su Song who believes in facts, it is just a conjecture without even a foundation.It's just that Zhen Qiong is too bold, Xuan Ye's theory is nothing more than that, and he dares to say "walking around the sun", it is really unreasonable!

Hearing what he said, Zhen Qiong was even more at a loss: "What is Xuan Ye's theory? I heard from my mentor that the earth rotates on its own axis, giving birth to day and night, revolving around the sun, and giving birth to four seasons. Isn't it like this?"

"Ridiculous!" Su Song was really angry.To say that the earth rotates around the sun is enough to shock the world, why is there still "rotation"?The ground under your feet is flat, where is there any sign of turning? !

Shen Kuo, who had not opened his mouth all the time, suddenly said at this moment: "If it revolves around the sun, it can explain the difference between the scene and the floating leak."

Su Song turned his head abruptly and stared at Shen Kuo.Not frightened by his eyes, Shen Kuo said calmly: "Brother Su should also know that every day around the winter solstice, the scenery table is full for a day and night, but the floating leak is not full. And around the summer solstice, the scenery table is not full for a day and night, but the floating leak is still full. full……"

Before he finished speaking, Su Song said decisively: "That's the difference in the speed of water flow in winter and summer!"

This is also public opinion.The scenery table is timed according to the sunshine, and the floating leak is timed according to the speed of water.Although the references of the two are different, the recorded time should generally be the same.Such a deviation can only be explained by the flow speed.

Shen Kuo shook his head: "The same room temperature, how can the speed of the water flow be different? Besides, I use the 'trick trick' to correct the floating leak, and I can get a more accurate reading of the leaking arrow. It can be seen that the difference is not the water, It’s the sun. As Tang Shiseng and his party said, the sun moves faster in winter and slower in summer.”

"That's the solar movement on the ecliptic, what does it have to do with circumnavigation?" Su Song's calculation skills are not comparable to Shen Kuo's, and he doesn't want to get entangled with him on it, pointing to the key point.

Shen Kuo said: "Whether the sun revolves around the earth or the earth revolves around the sun is just a matter of reference. Just like a boat sailing on the sea, looking at a mountain, the boat can move close to the mountain or far away from the mountain, but it cannot be said that the mountain moves around the boat." Yes. The saying that "the earth has four travels" was born because of this. If the ground does not move, how can there be four travels? Only the ground moves, and the ecliptic is not a perfect circle. Only the distance from the sun can be divided, and the four seasons are derived. It is cold in the North Pole and hot in the South Pole, presumably because the earth is spherical and the sunshine is different, so there is a temperature difference."

These words are too detailed.Su Song had just seen the appearance of Sui Xing and Qi Wei Xing in the sky mirror, and in just a moment, he built the model Shen Kuo said in his mind.The sun is round, the moon is round, the year star is round, and the latitude stars around it are also round. Why can't the earth be round?But if it is really round, how can a person stand on the ground?Why doesn't the sea capsize?

There was a buzzing in his head, and Su Song was speechless for a while.After a long time, his throat moved, and he said with difficulty: "What about the autorotation?"

"If the earth goes around the sun, how can there be day and night?" Shen Kuo answered quite simply.If the earth revolves around the sun, rather than vice versa, then day and night are formed, not because the sun, moon and stars rise in the east and set in the west, but the earth rotates from west to east.Only this can explain why the trajectories of celestial bodies are quite different, but they all rise and fall in the same way.

"This is just speculation, without evidence!" Su Song said immediately.

Shen Kuo didn't refute it, and turned to Zhen Qiong, "Does Ling Xiaozi have a way to verify the rotation of the earth?"

Zhen Qiong was already stupid at this moment, and didn't understand what the two of them were saying.Seeing Shen Kuo's question, I couldn't help being excited: "I haven't studied astronomy, how do I know? These are all from my master and his old man!"

Shen Kuo: "..."

Su Song: "..."

You don't understand astronomy, so you just talk nonsense? !And your master, isn't it said that he is a fairy?You want to say that this "earthquake theory" was taught by gods? !

Taking a deep breath, Shen Kuo ignored him, and said to himself: "Now that we have a sky-observing mirror, whether the theory of rotation and revolution is true or not, we should be able to observe it. If it is true, the calendar may change greatly..."

Before he could finish his words, Su Song said decisively: "If this matter is spread to the outside world, it will definitely lead to disaster!"

A round earth can make the world go crazy, not to mention the theory of "earthquake"!No matter whether it is rotation or revolution, it will attract fierce discussions from all over the world. If one is not good, it will be a disaster of death!Astrology and calendar are the foundation of a country, they are related to Zhengshuo, and there is also a "relationship between heaven and man" on it.The cause of heaven and earth, the mysteries of the universe, and even the change of yin and yang have long been concluded. Now the sudden refutation is to refute Dong Zi and overthrow the theory of "Baihu Tongde Lun"?

This is the enemy of the world!

Shen Kuo was also a Jinshi, and he was familiar with classics and history, so how could he not know this?However, after pondering for a long time, he still shook his head: "The heavens and the earth have never changed according to people's hearts. As long as there is a sky-gazing mirror, sooner or later someone will see the clues. What we have learned is not just to understand the principles of the world. How can we be changed by people? Criticism, just pretend to be deaf and dumb, and turn a blind eye?"

Su Song's throat choked, but he couldn't speak.If these are true, if you keep silent, can you really be worthy of your conscience?He is also well-learned in poetry and books, and has a proud body.Is it a gentleman's behavior to ignore right and wrong in order to avoid disaster?

After being silent for a long time, Su Song finally sighed: "It's too shocking to tell the whole story. Now you and I don't have any evidence, so you might as well study it carefully and draw it slowly."

As the saying goes, hearing is believing, seeing is believing.Not to mention the sky-gazing mirror, even the telescope is a secret that is forbidden to spread outside the world. How can ordinary people tell whether this statement is true or false?Besides, it is not so easy to get rid of the "common sense" that has lasted for thousands of years. It is better to come up with a more secure method.

Shen Kuo has no objection to this statement.After thinking for a moment, he turned his head to Zhen Qiong and said, "Ling Xiaozi, did Master ever mention that the sky is full of gas, and the stars are supported by gas?"

Now Shen Kuo also feels that what Ling Xiaozi said is somewhat similar to "Xuan Ye Shuo".It's just a step further than Xuan Ye, clarifying the method of star movement.Without that layer of shell, how the celestial body would float in the void is really worth studying.

He understands this!Zhen Qiong was shocked: "The universe is not filled with gas, but there is no gas. It is called 'void' or 'vacuum'. Only in this way can stars be suspended."

Shen Kuo: "..."

Su Song: "..."

How is this different from what you said? !There is no air in such a large sky, so what is it filled with?

Seeing that the expressions of the two people were not right, Zhen Qiong hurriedly said: "Qi can be divided into primordial and turbid. Only by inhaling primordial qi can a person survive. The rest are turbid qi, some can burn, some can kill people, and some can extinguish the flames. If you put a candle in water and cover it with a glass bottle, after a while, the candle will extinguish itself and the water will rise a little.

Su Song can understand this statement as soon as he hears it, and he has tried it himself.But what does this have to do with a vacuum?

Shen Kuo thought more deeply: "If you also suck out the turbid air, what will happen?"

"There will be suction, and the eight horses will not be able to separate." Zhen Qiong answered firmly.

Among the three schools of gold and stone, water and fire, and herbs, and even the concept of Gewu, there is only one thing that can be studied.It is "Qi".Qi is the foundation of sound and breath, and it is also the opportunity for good fortune.Therefore, every school of thought attaches great importance to it.However, only Daguan, or the Royal Academy has the strength to study "Qi", and he only listened to some explanations from his teacher.And the "vacuum" ball that can't be separated by eight horses is a story familiar to those who learn Taoism.

Shen Kuo's eyes changed: "Can you know this method?"

"No." Zhen Qiong answered simply.

I know, I know, but this is obviously something studied by Gewuguan. His small Taoist concept has never even been involved in the study of qi, so how can he demonstrate such an experiment?

Shen Kuo: "..."

Su Song came back to his senses at this moment, and sighed: "Since there are real facts to prove it, we might as well start with 'qi' first. All schools have their own theory of qi, but it is not easy to attract criticism."

There have always been different opinions on gas.What they say will only surprise people, and will not repel them.What's more, from what Zhen Qiong said, this can still be proved.As long as there is evidence, why not convince the world?

Shen Kuo also reacted: "It doesn't seem to be difficult to draw breath, but you can try it. There is also the reason why the candle is extinguished. You can write a small article and publish it in the newspaper."

Shen Kuo and Su Song were familiar with these, and they immediately gathered together to discuss.Being thrown aside by the two of them, Zhen Qiong didn't feel bored, and leaned in front of the sky-viewing mirror by herself, and began to look carefully again.

Oh, why does there seem to be a red spot on the year star?Could it be a sea of ​​red?The satellite is really small, the moon should be bigger than this, right?It wasn't enough to look at the year star, so he secretly moved his position and ran to see Xinghe.The densely packed stars look like the river has disappeared.If the sky is full of stars as big as the earth under one foot, how big should the sky be?

Full of whimsical ideas, Zhen Qiong was very happy to watch, but was poured cold water before leaving.Su Song told him solemnly that the theory of the earthquake must never be mentioned to anyone.To mention it rashly is to harm others and oneself, and may even implicate officials Han.

Hearing this, no matter how much you think, you can only hold back in aggrieved manner.Zhen Qiong returned home dejectedly, found Han Miao, and threw herself on him.

"Didn't you go to see the Sky Observing Mirror today? Could there be something wrong?" Han Miao waited at home for a long time, and finally hoped for him to come back, but found that Xiaodao looked depressed, and immediately suspended his mind.

"The sky-gazing mirror is very useful. You can see many wonders, but you can't let Brother Miao see it too..." So many beautiful scenery, he wants to tell Brother Miao so much that he can see it with his own eyes.If I knew it earlier, I wouldn't have told Su Song and the others about revolution and rotation.

Hearing this, Han Miao couldn't help laughing, and led the person to the window, and looked up: "The sky is full of stars, if you want to see, why do you need something outside?"

Outside the window, there is an unobstructed night sky, the moonlight is bright and clear, and the stars are twinkling, overwhelming the fireworks in the world.At a glance, it is vast and magnificent, but how can it be fully displayed in a small mirror?

Zhen Qiong's breathing stagnates slightly.Yes, so what if there is no sky mirror?The stars will not disappear, and there are always other ways to watch them.Besides, if Shen Kuo, Su Song and the others figured out a way to spread the "earthquake theory" all over the world, one day Brother Miao will definitely be able to see the wonders in the sky-gazing mirror!

Feeling cheered up again, Zhen Qiong firmly held Han Miao's hand: "One day, I'll let Brother Miao see the scenery beyond the sky!"

This rhetoric does not match Tranquil Starry Sky.However, that hand held him tightly, unwilling to separate at all.Han Miao couldn't help laughing, and said in a low voice, "Okay, I'll wait."

The author has something to say: the difference between the scene and the floating leak is the proof that the earth's revolution is not uniform.That is, the performance of perihelion and aphelion.Shen Kuo found out, and made a mathematical model of "recruitment technique" to correct this error.Don't ask the nest principle, I don't understand orz

In astronomy, Shen Kuo changed the armillary sphere, discovered that the revolution speed was uneven, and canceled the "leap month", and recreated the "Twelve Solar Calendar" based on the Gregorian calendar.It can be said that every discovery is shocking and not accepted by the world, but it is only one step away from the truth.

There are also observation models, and Jupiter is really suitable.The brightness is enough, there are satellites, the rotation is fast, the revolution is timed and has long been recorded (Suixing, a revolution period of 12 years, is also the origin of the "earthly branch"), and the Great Red Spot can be used as a reference.It can be said that the discovery of macro and micro is the beginning of changing the world.