I am a primitive

Regarding the doubts about this question, he finally figured it out after he went to high school and studied geography.

"Son of God, is it closer to the sun in the morning or at noon?"

The stunned stone finally couldn't help asking Han Cheng.

Originally, he had no doubts about the result he got, but now, he has been shaken.

The rest of the people also looked at Han Cheng in unison, hoping to get an accurate answer from their son of God, and to solve this problem that made their brains hurt.

"Of course it is closer to the sun at noon, and farther away from the sun in the morning and evening."

This and the question can stump the old Confucius, who is seriously biased, but not Han Cheng, a liberal arts student with a very good score in geography.

After hearing Shitou's question, he gave an accurate answer very simply, without saying a word.

In the past, after getting an accurate answer, many people in the tribe would not continue to ask the bottom line, but this time it is different, they all want to know why this is the case.

Why does the sun look so big in the morning, but it turns out to be far from the ground...

Seeing is not necessarily believing. In many cases, eyes can also deceive people and give people an illusion.

"This is because in the morning, the sun shines in obliquely, and the refraction by the atmosphere wrapped around the earth is particularly obvious, which magnifies the sun.

But at noon, the sun shines more directly, instead of magnifying the sun, it presents the original face of the sun, so at noon, the sun looks smaller. "

Of course, everyone in the tribe couldn't understand such words, and even the most talented stone was stunned.

After thinking about it, Han Cheng asked someone to fetch a piece of ice from the water basin outside, carefully made it into a convex lens, and put it in front of one of his eyes.

Then, everyone in the tribe was surprised to find that Shenzi's eye was much bigger than the other eye.

When Han Cheng removed the ice cube from his eyes, the eyes immediately returned to their normal size.

"In the morning, the atmosphere acts like this ice cube, magnifying the sun, but when the sun shines directly at noon, the atmosphere has no magnifying effect."

As Han Cheng said, he put a flat ice cube in front of one eye, and his eye looked about the same size as before.

This miraculous scene made everyone amazed, but at the same time, through this analogy experiment, many people in the tribe understood what was going on.

After Han Cheng saw that many people understood, he gave the ice cubes in his hands to the people sitting in front and asked them to play with them.

"Son of God, the earth we live in is a big sphere, and it's still spinning in circles, why hasn't that person been thrown out?"

When everyone was curious about the ability of ice cubes to magnify things, Wu, who had been silent all this time, finally asked a question.

He struggled with this question for quite a while, but he didn't come up with a reason. At this time, seeing that everyone was not asking questions, Shenzi didn't talk about it any more. After thinking about it, he stood up and said it.

After the witch's voice sounded, the big tiled house with blue bricks became quite quiet all of a sudden. After the question that Wu asked was understood, the big tiled house with blue bricks became even quieter.

If it hadn't been proposed by Wu, they really didn't realize this problem.

Now that Wu said this, and they followed Wu's train of thought, they immediately fell into the same confusion and doubts as Wu did.

Seeing this, Han Cheng sniffed. Fortunately, he is a time traveler, otherwise he would have been really questioned by you.

He looked at the crowd, cleared his throat, and was about to stand on the shoulders of giants and grab Mr. Newton's apples.

"This is because the earth we live in has a kind of attraction that can attract us all, not just us, everything on the earth will be attracted.

It is precisely because of the existence of this invisible and intangible attraction that we will not be thrown away in the rotation of the earth. "

Just as Han Cheng thought, after he threw out the gravitational force, everyone in the tribe stopped talking, and their eyes were either surprised, confused, or thinking...

"But, son of a bitch, birds can fly in the sky, and I can also jump up."

After such an atmosphere lasted for a while, someone finally couldn't help but speak.

"But a bird can't fly in the sky all the time. It always lands on the ground or on a tree. You can only leave the ground for a short while when you jump up, and then it will fall back to the ground immediately.

If the earth is not attractive, shouldn't you not fall after jumping up, but float in the air, or go straight to the sky? "

Han Cheng asked back with a smile.

After such a rhetorical question came out, everyone froze for a moment.

Yeah, why does everything fall to the ground?Even the farthest bird will fall to the ground when it gets tired.

The leaves blown into the sky by the wind, and the stones thrown up by himself and others will all fall to the ground in the end.

If there is no universal gravitation that the Son of God said, these things should all fly to other places, right?

If there is no universal gravitational force that the Son of God said, I and others have become accustomed to it, and I and others can't live on this big rotating ball, right?

Han Cheng looked at the reaction of the crowd, and a smile overflowed from the corner of his mouth. It seemed that he was very successful in snatching Mr. Newton's apple this time.

Think about it too, many things are the most difficult when they are first invented or discovered, but once someone pierces this layer of window paper and gets it out, the latecomers will feel that it is also difficult to see. not difficult.

Just like Han Cheng today, Han Cheng told everyone in the tribe about the natural knowledge including gravitation. When he told the story in combination with the actual situation, it was not so difficult to understand it.

If it is difficult, this knowledge will not be taught in high school, but popularized to everyone.

And he, as a member of beings with mediocre aptitude, couldn't understand all of these and remember them firmly.

That's all for today's narration. When everyone came out of the big brick house, looking at the familiar scene outside, they all felt a little different.

It seems that the whole person understands many things at once, and has a different view and understanding of the world.

As night fell, the Qingque tribe, like the rest of the place, was also shrouded in darkness.

Lying on the warm kang, the stone opened a corner of the window beside him.

Through this corner gap, he could see two bright stars in the night sky.

At this time, the stone eyes were as bright as the two stars in the night sky.

Thinking back to what the Son of God said today, Shitou's heart fluctuated violently.

Before that, he never thought that there are so many things hidden behind these things that he and others have long been accustomed to.

Many seemingly ordinary things have their own reasons.

Today, following Shenzi's narration, he discovered a different world, as if a door had been opened in his mind.

Perhaps, after I know enough about this world, I will be able to fly to the sky!

I don't know how long I've been lying here, Shi Shi put down the corner of the animal skin curtain, lying on the bed, thinking about these things, couldn't help clenching his fists.

Han Cheng, who was lying on the kang, was also not at peace thinking about what happened today.