Daming Town Haiwang

Chapter 1383, Gravity

Looking at Gao Lu who was thinking hard, Liu Jin also laughed.

If he can research the universal gravitation, then Daming's physics field will open a new chapter first, turning the physics chapter into the field of mechanics.

"Tell me, what is he thinking about?"

Next to him, Zhu Houzhao obviously didn't want to continue discussing the professional field with Liu Jin. After all, in Zhu Houzhao's view, discussing these things with Liu Jin was simply playing the piano against the cow.

So I also chatted with Ren Siheng on the side. Ren Siheng is also a genius, has outstanding performance in many fields, and has deep attainments in the field of mathematics.

"I don't know, what is he thinking about? Could it be possible that hitting the head with a pine cone can make people suddenly enlightened and inspired?"

Ren Siheng thought for a while and shook his head slightly. To be honest, he couldn't figure out what this Gao Lu was thinking about, but what was certain was that he must be thinking about something extremely profound.

"It's useless to ask you, let's go over and ask Gao Lu together."

"I have long wanted to discuss things related to calculus with him."

Zhu Houzhao curled his lips, and then went straight to Gao Lu. Gao Lu's servants needed to stop Zhu Houzhao, but they were blocked by Zhu Houzhao's personal guards.

Seeing Zhu Houzhao being so straightforward, Liu Jin and Ren Sixu smiled, looked at each other, and followed.

"Gao Lu, what are you thinking about?"

Zhu Houzhao came to the big maple tree, looked at Gao Lu, and then at the person who kept loosening the fruit from the tree, and asked with a smile.

Gao Lu looked at Zhu Houzhao, Liu Jin, and Ren Siheng, but he didn't pay much attention to them. Instead, he continued to frown and fell into deep thought.

"I have a bit of a temper~"

Zhu Houzhao didn't mean to be angry at all, and then he followed Gao Lu's example and came under the tree.

The people on the tree saw Zhu Houzhao approaching and stopped what they were doing.

"Keep playing, keep playing, I also want to see this pine cone hitting my head, it can make people suddenly enlightened from time to time."

Zhu Houzhao gave instructions to the people on the tree.

Hearing this, the other party continued to put down the pine cones after thinking for a while. Soon, some pine cones fell on Zhu Houzhao's head. Zhu Houzhao touched his head, which hurt a little, and he didn't mean to be enlightened at all.

"You're probably wondering why this pine cone fell on your head?"

Seeing the funny scene in front of him, Liu Jin laughed, and also came under the tree, and asked Gao Lu.

As soon as Gao Lu heard it, his eyes burst into light, as if he had found a bosom friend, and he said, "Yes, I was just thinking about why it wouldn't go to the sky if I dropped something from a high place and it would fall to the ground. Fly, or fall in other directions."

"Why did it fall to the ground?"

When Zhu Houzhao heard it, he frowned immediately, then thought for a while and said, "Isn't it the most normal phenomenon to fall to the ground?"

However, soon, he frowned again and said, "Yeah, why did it fall to the ground instead of flying into the sky?"

"So you let people keep putting fruits on your head, thinking about this question again and again?"

"Well, once when I was reading under a tree, I was hit by a pine cone. At that time, I was thinking, why did this pine cone hit my head, and why didn't it fly to the sky."

"Later, with the opening of the new learning, we knew that we lived on a big sphere. Since we lived on a big sphere, logically speaking, we were facing downwards, and we should be able to learn from this big sphere. It fell from above."

"But in reality, not only will we not fall, but all the things in the air will eventually fall to the ground. It seems that there is an invisible force on the big ball that holds everything firmly. It's like being absorbed."

Gao Lu stopped his steps, as if he had found a bosom friend, so he also said what he was thinking.

"I really never thought about it."

"But hearing you say this, I immediately feel that there must be some kind of truth in it."

"Yeah, why does everything on this big ball we live in end up on the ground?"

Zhu Houzhao frowned immediately after hearing this, and began to think hard.

"Yeah, why?"

The same is true for Lian Ren Siheng. All of a sudden, it was only Gao Lu who was thinking about this problem, but now three people are thinking about this problem.

"Come on and relax~"

Zhu Houzhao gave instructions to the person who loosened the pine cones on the tree, and the other party immediately became very busy, throwing pine cones one by one under the tree continuously, hitting the heads of the three people.

"Actually, we can make a hypothesis about this question."

Liu Jin looked at the three of them dumbfounded.

Do you want to do this?

I have been thinking about this problem all of a sudden, and I am extremely out of gregarious all of a sudden, should I also go to the bottom of the tree and be hit by this pine cone?

After thinking about it, Liu Jin decided to give them some, otherwise this universal gravitational force would not be brought up.

"Assumption?"

The three of them looked at Liu Jin in unison, waiting for Liu Jin's next words.

"Let's say there is a pine tree that is so big, so tall, so tall that the moon is a pine cone on it. Then the question arises, 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 lit up immediately, and he slapped his thigh fiercely and said.

"It should be because the moon is far away from the sphere where we live."

Ren Siheng thought for a while and said.

"It should not only be related to the distance, but also may be due to the relatively large size of the moon."

Zhu Houzhao thought for a while and said.

"Can we assume that there is a kind of power, which exists on every object, but this kind of power is big or small. When the mass of an object is large enough, its power will become extremely powerful .”

"For example, the earth we live on has a very, very large mass, so its power is also very, very large. All objects that are closer to it will be affected by this power, and will be affected by it. It is firmly bound, or it is impossible to escape it."

Liu Jin thought for a while to wake them up in this seldom euphemistic way.

"Yes~"

"Yes, yes, that's how it should be~"

When Gao Lu heard it, he jumped up suddenly, and then ran wildly excitedly, while walking, he yelled and said: "I know, I know, I finally figured it out, I got it~ "

"Haha, that's how it is, that's how it is~"

He seemed to be enlightened all of a sudden, he was so excited that he was so excited that it was difficult to control his words and deeds, and he shouted excitedly to vent the excitement in his heart.

Soon, he was sweating profusely and came back under the tree out of breath. Regardless of everyone's surprised eyes, he said, "I understand~ I understand."

"As you assume, everything carries a power in itself, we can call it~"

"Well, call it gravity!"

Gao Lu pondered for a moment, and thought about naming this force gravity.

"Everything has gravitational force. We can't feel this kind of gravitational force in ordinary times, because the mass of these ordinary things is too small, the gravitational force can be ignored, and it can't have any influence on the surrounding things."

"However, if a physical mass is as large as the earth, the moon, and the sun, its gravitational force will become so huge that everything on the earth cannot escape its gravitational shackles, so even We live on a ball, and we don’t have to worry about falling, everything in the air will be bound by this gravitational force, and eventually fall to the ground.”

"Even, I think that both the moon and the sun may be affected by the gravitational force of the earth. Therefore, both sides always revolve around the same orbit, and the gravitational force between each other attracts each other, but because the distance is far enough, there is no collision. together."

Gao Lu excitedly told everyone about this gravitational force.

"gravitational?"

Zhu Houzhao and Ren Siheng listened carefully, frowning and meditating, while the students watching the excitement around them felt like they were listening to a scripture, thinking that Gao Lu was talking nonsense.

What gravitational force, this gravitational force is also related to mass?
"Haha, that's how it is, that's how it is~"

"It turned out to be because of something like gravity, the force of traction, everything has gravity, and there is gravity!"

Gao Lu didn't care what the people around him thought or thought, he thought carefully, and kept uttering new words one by one while thinking.

Then he said to his servants: "Brush~"

When the servant heard this, he quickly took out a wooden board covered with rice paper, and at the same time respectfully handed over a new-style pencil, and saw Gao Lu holding the pencil and began to write and draw on the paper.

The magnitude of the gravitational force is related to the size of the mass. The gravitational force between two objects is related to the mass between the two objects, and also related to the distance between the two objects.

The mass should be directly proportional, the greater the mass, the greater the gravitational force, and the smaller the mass, the smaller the universal 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 universal gravitational force.

He kept writing and drawing on the paper, and wrote out a formula, but felt that it was not going on, 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 know the distance between the earth and the moon, you can calculate the gravitational force between the earth and the moon~"

"But how to calculate the mass of the earth?"

Gao Lu dragged his chin and fell into deep thought again.

　Here comes the question, how to calculate the mass of the earth without knowing many formulas and coefficients?

　　
　
(End of this chapter)