Looking at Gao Lu who was thinking hard, Liu Jin also laughed.
If he can study universal gravitation, then the field of physics in Ming Dynasty will open a new chapter first, turning the chapter of physics into the field of mechanics.
"Tell me, what on earth is he thinking about?"
Next to him, Zhu Houzhao obviously didn't want to continue discussing professional matters with Liu Jin. After all, in Zhu Houzhao's opinion, discussing these things with Liu Jin was like playing the piano to an ox.
So I started chatting with Ren Siheng on the side. Ren Siheng is also a genius. He has outstanding performance in many fields and has profound attainments in the field of mathematics.
"I don't know what he was thinking about. Could it be that hitting a pine cone on the head can make people suddenly enlightened and inspired?"
Ren Siheng thought for a while and shook his head slightly. To be honest, he didn't understand what Gao Lu was thinking about, but what was certain was that he must be thinking about something extremely profound.
"Asking you is useless. Let's go and ask this Gao Lu together."
"I have long wanted to discuss calculus-related things with him."
Zhu Houzhao curled his lips, and then walked straight towards Gao Lu. Gao Lu's servants still had to stop Zhu Houzhao, but they were stopped by Zhu Houzhao's personal bodyguards.
Seeing Zhu Houzhao being so direct, Liu Jin and Ren Sisiu smiled, looked at each other, and followed him.
"Gao Lu, what are you thinking about?"
Zhu Houzhao came to the big maple tree, looked at Gao Lu, then looked at the people relaxing on the tree, and asked with a smile.
Gao Lu looked at Zhu Houzhao, Liu Jin, and Ren Siheng, but didn't pay much attention to them. Instead, he continued to frown and fell into deep thought.
"A little tempered~"
Zhu Houzhao didn't mean to be angry at all, and then followed Gao Lu's example and came to the tree.
The people in the tree stopped what they were doing when they saw Zhu Houzhao coming over.
"Keep playing, keep playing, I also want to see this pine cone hit on the head, and it can make people enlightened from time to time."
Zhu Houzhao ordered to the people on the tree.
When the other party heard this, he thought for a while and continued to put down the pine cones. Soon, a pine cone fell on Zhu Houzhao's head. Zhu Houzhao touched his head and felt a little pain, but he didn't feel enlightened at all.
"You must be wondering why this pine cone fell on your head, right?"
Seeing the funny scene in front of him, Liu Jin laughed. He also came to the bottom of the tree and asked Gao Lu.
When Gao Lu heard this, his eyes suddenly shone with light, as if he had found a confidant, and said: "Yes, I was just thinking about why if I drop something from a height, it will fall to the ground, why won't it go up to the sky?
Fly, or fall in other directions."
"Why did it fall to the ground?"
When Zhu Houzhao heard this, he immediately frowned, then thought about it and said, "Falling to the ground, isn't this the most normal phenomenon?"
However, soon, he frowned and said, "Yeah, why did it fall to the ground instead of flying to the sky?"
"So you just let people keep putting fruit on your head and think about this problem again and again?"
"Well, one time I was reading under a tree and was hit by a pine cone. At that time, I was thinking why the pine cone hit my head and why it didn't fly into the sky."
"Later, with the opening of new learning, we learned that we live on a big round ball. Since we live on a big round ball, it stands to reason that we are facing downwards, and we should be able to move from this big ball.
It fell from above."
"But in reality, not only will we not fall, but everything in the air will eventually fall to the ground. It seems that there is an invisible force on this big ball that holds everything tightly.
It’s like it’s absorbed.”
Gao Lu stopped, as if he had found a soulmate, so he also spoke out what he was thinking.
"I really have never thought about this problem."
"But when I heard you say it, I immediately felt that there must be some kind of truth in it."
"Yeah, why does everything on this big ball we live in eventually fall to the ground?"
After Zhu Houzhao heard this, he immediately frowned and started thinking hard.
"Yeah, why?"
The same is true for Ren Siheng. Suddenly it was only Gao Lu who was thinking about this issue, and now there are three people thinking about it.
"Relax and come down~"
Zhu Houzhao ordered the person loosening the pine cones on the tree, and the other person immediately became very busy, throwing pine cones one after another under the tree, hitting the heads of the three people.
"Actually, we can make a hypothesis about this issue."
Liu Jin looked at the three of them dumbfounded.
Do you want this?
I thought about this problem all of a sudden, and I suddenly seemed extremely out of touch. Should I also go under the tree and get hit by this pine cone?
After thinking about it, Liu Jin decided to give them a little bit, otherwise the force of gravity would not be revealed until someone else.
"What if?"
The three of them looked at Liu Jin in unison, waiting for Liu Jin's next words.
"Let's assume that there is a pine tree. It is so big, so big, so high, so high that the moon is a pine cone on it. Then the question is, why doesn't the moon fall to the ground?"
Liu Jin thought for a while and said.
"Yes, why doesn't the moon fall to the ground?"
"It stands to reason that the moon should also fall to the ground, and why doesn't the sun fall to the ground?"
When Gao Lu heard this, his eyes immediately lit up, he slapped his thigh fiercely and said.
"It should be because the moon is relatively far away from the planet we live on."
Ren Siheng thought for a while and said.
"It should not only be related to the distance, but also maybe because of the larger size of the moon."
Zhu Houzhao thought for a while and said.
"Can we assume that there is a force that exists on every object, but this force can be large or small? When the mass of an object is large enough, its force will become extremely powerful.
."
"For example, the earth we live in has a very, very large mass, so its power is also very large. All objects that are closer to it will be affected by its power and will be affected by it.
It is tightly bound, or it is impossible to escape from its force."
Liu Jin thought for a while and used this rarely tactful way to wake them up.
"Yes~"
"Yes, yes, that's how it should be~"
When Gao Lu heard this, he jumped up suddenly, and then ran wildly with excitement. As he walked, he yelled: "I know, I know, I finally figured it out, I understand~
"
"Haha, that's it, that's it~"
He seemed to have an enlightenment all of a sudden. He was so excited that he could hardly control his words and deeds and shouted excitedly to vent his inner excitement.
Soon, he was sweating profusely and panting back under the tree. Regardless of everyone's surprised looks, he said: "I understand~ I understand."
"As you have assumed, everything carries a power within itself, which we can call~"
"Well, call it gravity!"
Gaolu thought for a moment and thought about naming this force gravity.
"Everything has gravity. Normally, we cannot feel this gravity at all, because the mass of these ordinary things is so small that the gravity is negligible and cannot have any impact on the surrounding things."
"However, if a physical mass reaches celestial bodies such as the earth, the moon, and the sun, its gravity will become extremely huge, so that nothing on the earth can escape the shackles of its gravity. Therefore, even if
We live on a ball, and we don’t have to worry about falling. Everything in the air will be bound by this gravity and eventually fall to the ground.”
"I even think that the moon and the sun may be affected by the gravity of the earth. Therefore, both sides are always orbiting in an orbit. The gravity between them attracts each other, but because they are far enough apart, there is no collision.
Together."
Gao Lu excitedly told everyone about this gravity.
"gravitational?"
Zhu Houzhao and Ren Siheng listened carefully, frowning and thinking deeply, while the students watching the excitement around them all felt as if they were listening to a book from heaven, thinking that Gao Lu was talking nonsense.
What is gravity? Is this gravity related to mass?
"Haha, that's it, that's it~"
"It turns out to be because of something like gravity, the force of traction. Everything has gravity, and everything has gravity!"
Gao Lucai didn't care what the people around him saw or thought, he thought carefully, and kept saying new words one after another while thinking about it.
Then he said to his servant: "Bi Mo~"
When the servant heard this, he quickly took out a wooden board with rice paper on it. At the same time, he respectfully handed over a new-style pencil. Gao Lu took the pencil and began to write and draw on the paper.
The size of the universal gravitation is related to the size of the mass. The gravitational force between two objects is related to the mass between the two objects, and it is also related to the distance between the two objects.
The mass should be proportional. The greater the mass, the greater the gravitational force. The smaller the mass, the smaller the gravitational force.
The distance should be inversely proportional. The smaller the distance, the greater the gravitational force. On the contrary, the greater the distance, the smaller the gravitational force.
He kept writing and drawing on the paper, and he came up with a formula, but he felt that it couldn't stop, so he tore off a piece of paper, and then started writing and drawing again.
"If you can calculate the mass of the earth and the moon, and then know the distance between the earth and the moon, you can calculate the gravitational force between the earth and the moon~"
"But how do we calculate the mass of the Earth?"
Gao Lu dragged his chin and fell into deep thought again.