Chapter 1782 Inspection of Gezhi Academy - The Law of Gravity
Seeing the expressions of Cao Zheng and Zhou Wei, Yun knew that they must not be able to think of other reasons, so he stopped asking and started thinking: 'Should I give them some reminder?' Sichengtang, Cao Zheng and Zhou Wei They are all extremely smart people. With my reminder, they will probably be able to discover that very important law. But, how to give a subtle reminder without making them suspicious?'
He thought about it again and decided to tell them something that has been proved and is extremely important in astronomy first, and will talk about it later. "Cao Qing, Siqing, and Zhou Qing, I want to tell my three dear friends something. This may be helpful to your astronomy research. Last year, someone proved that the earth under your feet is a sphere."
"Has it been proven that the earth under your feet is a sphere?" In an instant, countless people exclaimed, not just Cao Zheng and the other three. Even Wen Yuan, Wen and Wen Luo looked at Yun in surprise. Only Min'er already knew After hearing this, she was not surprised. However, she saw that everyone was very surprised, so she pretended to be surprised. But her previous expression had already caught her father's eyes. Yun smiled at her, and Min'er also Wink your eyes.
"Dad, when did someone verify that the ground beneath their feet is a sphere? Why didn't my son know?" Wenyuan asked.
"This matter is very confidential. Very few people in the entire Ming Dynasty know about it. I don't want to make it public for the time being. You must not tell others, even the closest people around you. If I know about it, I will definitely not take it lightly. Forgive me!"
Yunxian said this sternly, so frightened that Cao Zheng and the other three people hurriedly stood up and said that they would never dare to spread the word. Even Wen and Wen Luo's expressions were unnatural, and then they continued: "It's a group from Hanzhou Continent. People sailed eastward from Hanzhou but arrived at the Mojiali Continent, and the Mojiali Continent should be to the west of the Ming Dynasty, thus proving that the earth under their feet is a sphere. King Wu met this group of people on the way to Egypt and learned this After returning to the capital in the twelfth month of last year, he told me about the matter. I decided not to make it public, so I didn't tell anyone before; King Wu also asked him not to tell others."
"It was actually verified that the earth beneath our feet is a sphere." Cao Zheng murmured several times, looking a little confused and a little excited. After a while, he said: "Thank you very much, Your Majesty, for telling me about this. I learned this. Although it is not very useful for studying why the sun, moon and stars do not fall to the ground, it is of great use for other studies."
"Thank you, Your Majesty, for telling me this." Sichengtang and Zhou Wei both came to their senses and bowed in salute.
But when he heard what they said, Yun was disappointed. It was very useful to verify that the ground under his feet was a sphere, which was very useful for studying gravity, but they actually thought it was not important? Yun couldn't help but shook his head inwardly, thinking: 'After all, it is still not as good as Newton's Ah. They have far more superior research conditions than Newton, and far more sufficient research funds than Newton. Although they have also developed calculus and the three laws of motion, they were developed by three people separately. Now I meet someone who is even more talented. Laws cannot be studied.'
Of course, Yun also knew that when the three of them were conducting astronomical research, there was very little preliminary research. Whether it was the heliocentric theory or the three laws of planetary motion, they had worked hard to study it, and Newton could stand on the shoulders of his predecessors; but he always He hopes that the people under his command can do better.
However, Yun quickly adjusted his mood. If they noticed that he was disappointed, he would probably feel uneasy and make it more difficult to conduct research. He began to think about how to give a second reminder, whether it would be today or another day.
Provide reminders to help them discover the correct research direction so that the law can be discovered.
But at this moment, Wen Luo suddenly said: "If the earth under your feet is a sphere, wouldn't it be the same as Mercury, Venus, Mars, Jupiter, and Saturn? Mercury, Venus, Mars, Jupiter, and Saturn all revolve around the sun, and the earth
It also revolves around the sun; Mercury, Venus, Mars, Jupiter, and Saturn are spheres, and the earth is also a sphere; Mercury, Venus, Mars, Jupiter, and Saturn are surrounded by small stars, and the earth is also surrounded by the moon. From this point of view, the earth, metal, wood, water, fire, and earth
The five stars are exactly the same."
"How can the earth be exactly the same as the five stars of metal, wood, water, fire and earth?" Sichengtang also ignored the difference in status and argued: "There are all things in the world on the earth, and there are people living on it. Mercury, Venus, Mars, Jupiter,
Is there such a thing as Saturn?"
"How does Mr. Si know that there are no people or anything on Mercury, Venus, Mars, Jupiter, and Saturn? Can clairvoyants observe the surfaces of these five stars?"
These words suddenly sounded like thunder in Sichengtang's ears. He murmured to himself: "Could it be that there are people and all things in the world on the five stars of gold, wood, water, fire and earth?"
"Could it be that there are people and everything in the world on the five stars of metal, wood, water, fire and earth?" Wen, Zhou Wei and others also discussed: "So, people are not unique to the earth? These stars, no, there are people living on the planet?"
"Maybe at this time there are people on the five planets who have developed something similar to clairvoyance and are observing the earth and other planets."
"I don't know if they have proven that their planet is a sphere."
"People on Mercury and Mars should have discovered it, right? After all, Mercury and Mars are too small, and people living on them can easily find that the ground is curved, verifying that the place they live in is a sphere; Venus is about the same size as the Earth, so it's hard to say; Wood and Earth
The two stars are far larger than the earth, and I'm afraid they may not be able to discover them in a hundred years." Everyone was discussing enthusiastically.
Seeing this situation, Yun had to cough. After everyone stopped talking and turned to look at him, he said: "You can discuss later about whether there are people and everything in the world on the five planets of gold, wood, water, fire and earth. I just want to know.
, is this useful for studying why the sun, moon and stars do not fall on the earth?"
"Dad, three gentlemen, and brothers and sisters," Wen Luo said: "If the earth is the same as the five stars of metal, wood, water, fire and earth, since the earth has gravitational pull on everything in the world, then the five stars and five planets should also have gravitational pull on everything in the world.
Gravity. The sun also has a gravitational pull on the stars. Since they all have gravitational pull, could it be that the reason why they will not fall on the earth, no, they will not fall on the sun or any planet, is because of the gravitational pull between them?"
She gave an analogy: "It's like tying many balls together with long strings. If you hold one of the balls in your hand, the other balls will not fall to the ground."
"This explanation makes sense." Zhou Wei also thought of this just now. But he added: "But, why is there gravity? What does the magnitude of gravity have to do with it?"
"Is it possible that gravity is naturally produced by the sun, moon and stars?" Wen said: "Just like stones are born hard, cotton is born soft, and rice is born for human consumption, gravity is also born with the sun, moon and stars?"
"As for the size of the gravitational force, maybe it is related to the size of the sun, moon and stars? The larger the sun, moon and stars, the greater the gravitational force, and the smaller the sun, moon and stars, the smaller the gravitational force?"
"Gravity is born? Is the size related to the size of the stars?" Sichengtang repeated it again and said firmly: "That should be the case."
"But there is something unexplainable about this." Zhou Wei added: "The sun is huge, much larger than the five planets of metal, wood, water, fire, earth and the earth combined. If the size of gravity is related to the size of the stars, then all six
All the planets will fall towards the sun instead of hanging in the sky like this."
"Are there no other stars in the distance? Although those stars look very small, this is because they are very far away. These stars may be very large." Sicheng said.
"Aside from volume, does the magnitude of gravity have anything to do with distance?"
"There must be a relationship. A star or a planet will not have the same gravitational pull on two planets that are far away from each other."
"In other words, the size of gravity is not only related to volume, but also to distance?"
"Could it be that the size of gravity is not related to volume, but to weight?" Zhou Wei asked again.
"Weight? Why did you guess it was weight?" someone asked. But the man became thoughtful after asking this question.
"The sun is not only much larger in size than all the stars, but the distance from the earth is also smaller than many other stars. If the size of the gravitational force is related to the size and distance, then other stars cannot prevent the earth from sliding towards the sun in any way. It is only related to weight, and
The weight of the sun is not as large as its volume, so it is possible for the earth to be kept far away from the sun under the pull of other planets," Zhou Wei explained.
"This makes sense. However, whether gravity is related to volume or weight requires continued observation and calculation," Sicheng said.
Seeing how enthusiastic they were discussing, Yun felt happy and worried at the same time. The happy thing was that they were almost discussing the calculation formula of gravity. As long as they observe carefully in the future and carefully collect various observation data, sooner or later they can summarize the real calculation formula; worried
The is...
As he was thinking, he suddenly heard Wen Luo say again: "Mr. Zhou, Mr. Cao, Mr. Si, the student has something in mind."
"Your Highness, please speak." Cao Zheng said before Zhou Wei could speak.
"Is gravity not only produced naturally by the sun, moon and stars, but also by everything in the world?" Wen Luo asked.
"Gravity is not only produced naturally by the sun, moon and stars, but also by everything in the world." Cao Zheng murmured, but his eyes became brighter and brighter, and finally said in a very firm tone: "Gravity,
Everything in the world can occur naturally."
"Gravity can produce everything in the world naturally?" Wen Dao said: "Then why are you and I standing here, but we don't get closer due to the pull of gravity?"
"Because the weight is too light or the volume is too small." Before Cao Zheng could speak, Wen Luo had already answered: "With the weight or volume of the earth, there is only this little gravitational force. How much gravitational force will there be between people?"
"So, is it true that everything in the world can naturally produce gravity? However, the sun, moon and stars actually follow the same laws as everything in the world?" Zhou Weidao. Sichengtang also raised his own doubts.
"The sun, moon, stars, and all things in the world do not follow the same laws. Apart from speculations by people who have studied astronomy in the past, is there any empirical proof?" Wen Luo glanced at the people present, and of course he quickly passed by his father when he glanced at it.
"No, there is no empirical evidence to prove it. Since there is no proof, then my guess cannot be denied, and it follows the same rule."
"Moreover," Wen Luo said again: "I have evidence to prove that the sun, moon and stars follow the same laws as everything in the world. I have also observed the stars and found that there are not only the sun, moon and stars in the sky, but also many other things floating in them.
Objects are like stones. Now think about it, these things are not like stones, but stones. Since they are also floating in the air, they must also have gravity; since the stones in the sky have gravity, the stones on the ground must also have gravity;
Since the rocks on the ground have gravity, then all other things that coexist with the rocks in the world should also have gravity."
Of course, Wen Luo's words are not without loopholes, and if you want to refute them, there are certainly points to refute; but Zhou Wei and Sichengtang are both people obsessed with astronomy, and what they pursue is to know the truth about the rotation of the sun, the moon, and the stars. They heard
After Wen Luo said this, he immediately stood there, and after a while, he suddenly knelt down and saluted Wen Luo; Cao Zheng was stunned for a moment, and then he knelt down as well.
"What are Mr. Zhou and the two gentlemen doing?" Wen Luo immediately said in panic. Zhou Wei was her teacher, and although Sichengtang and Cao Zheng were not, they also guided her in her studies, and she also called them sir.
, the three gentlemen knelt down together, no wonder she was panicked. Yun and others also looked at them in surprise.
"Thank you very much, Your Highness." Zhou Wei said: "Your Highness was able to figure out that everything in the heaven and earth has gravity, which solved my confusion. People who study astronomy like me must be very grateful to Your Highness. I and Vice President Cao will thank Your Highness on their behalf."
.His Royal Highness is worthy of being a teacher to my ministers and others."
"You are obviously my teacher, how can I still be your teacher?" Wen Luo said hurriedly.
"Han Changli's "Teacher's Theory" says: A teacher is the one who preaches the truth, acquires karma, and solves doubts. Your Highness solves the doubts of the minister, that is, he is the teacher of the minister." Zhou Weidao.
Wen Luo hurriedly retorted, and at the same time asked the guards to help Zhou Wei and others up. Of course, the three of them were not as strong as the guards. They were helped to stand up, but they still wanted to salute Wen Luo. Wen Luo gave up after trying hard.
Their intention to salute themselves.
"Cao Qing, Zhou Qing, Si Qing, from this point of view, do you think what Wen Luo said is very reasonable?" Yun said at this time.
"Your Majesty, I think what the Fourth Princess said is very reasonable and should be right." Cao Zheng said.
"That is to say: any two objects in the universe are attracted to each other. The magnitude of the gravitational force increases and decreases as the weight or volume of the two objects increases; it decreases as the distance between the two objects increases.
, decrease and increase." Yun said.
"Your Majesty summarized it very well!" Cao Zheng said hurriedly. He then added: "As for how to calculate the magnitude of gravity, and whether it is related to weight or volume, I and others must study it carefully."
"Okay." Yun agreed with him and continued: "Although we don't know how to calculate the magnitude of gravity, the basic content of the law is already there. How about I give this law a name: the law of universal gravitation?"
