Chu Tang: Tell Li Er at the beginning that I am a time traveler

Chapter 53 Debate, how about a debate?
Xiudefang, the courtyard in front of the main hall of the Academy of Sciences, in order not to be slapped in the face, Li Chunfeng asked a question in advance, "Does Bachelor Li also know astronomy?"

Li Chong shook his head. Astronomy is too complicated for him, so he only knows some basic common sense that ordinary people know. For example, if you ask him where Vega is and where it usually appears in the sky, he can say no Can't answer.

But this can’t be helped. At the level of future generations, if you want to see stars at night, it depends on whether the environment allows it or not.

"Since Li Xueshi doesn't understand astronomy, then Li Xueshi, what are you doing here?"

"But I think it's reasonable for me to do so."

"How reasonable?"

"Look, doesn't it make sense for the sun to be in the middle?"

"No! The sun revolves above the muddy sky. Has Li Xueshi ever heard of Zhang Heng's muddy sky theory?"

"You mean the one who said that the sky is like a chicken?"

"Yes, this is it."

"But I don't like his explanation. I think the sun should be placed in the middle, and then all the planets revolve around the sun together."

"Where is that place?"

"It's here."

"How?"

"Right here, it's also a ball."

"How could the ground be a ball?"

"Why can't the ground be a ball?"

……

Everyone else raised their hands, and you see, they said, this is bound to be debated.

But to be honest, although their dean is outrageous, they still prefer to trust their dean.

Because no matter what their dean said, there is a charm that can make people believe him blindly.

of course!

This is not to say that they rationally feel that their dean is right this time, but that they are willing to stand on the same side as the dean regardless of whether the dean is right or wrong.

"If it's a ball, why is that person standing on it?"

"Just stand there."

"The ground is flat."

"No! The ground is actually curved."

"What do you have to prove?"

Li Chong originally wanted to say standing on a high mountain, but there are too few high mountains that can meet this situation.

really!

Or a hot air balloon.But they haven't made it yet.

He said: "If you stand high enough and look down, you will find that the ground actually has a curvature, just like this."

However, this did not convince Li Chunfeng.

after that……

Li Chong also wanted to say, if you have been out at sea, you will find that in the distance, you can see the mast of the ship first, and then the hull of the ship.

but……

Doesn't that mean that he has been to the sea?This is even more inexplicable. Also, at such a distance, you must use a telescope, otherwise, who can have such good eyesight?
Moreover, others can find out that it is impossible for him to go to sea. As for reading it from a book, may I ask what book you read.

simply……

Li Chong didn't bother him too much on this issue.

"How tall?"

While thinking, Li Chong replied, "Probably, it must be tens of thousands of feet high."

What Li Bai wrote was just flying down three thousand feet, and he was called an immortal, but Li Chong's mouth was tens of thousands of feet, so how many thousands of feet high can people go?
Although Li Chunfeng doesn't know Li Bai now, it is impossible to know Li Bai in the future.

But one thing is certain, these are just Li Xueshi's own guesses.

Li Xueshi himself must have never been there.

"The earth is too big. It is impossible to see it without flying higher. If it can be seen from the moon, then the earth is completely round."

At this time, someone seemed to think that the water was not muddy enough, and asked, "Then where is the moon?"

As soon as this remark came out, it was like a small stone was suddenly thrown into a calm pool of water, and everyone unconsciously looked at each other and stared at him.Then, he turned his gaze back to Li Chong.

Li Chong said: "It's not easy, the moon revolves around the earth."

It's getting a little more complicated.

Everyone looked at the picture on the ground and thought about it.

"Then if this is the case, how can the sun rise and the moon set?"

Someone asked again.

"If it's a ball."

he murmured.

A person next to him patted the back of his head.

"Are you stupid? Didn't you just say that this is going around?"

"How to turn?"

"Rotation!" Li Chong said, "The earth revolves around the sun, and the earth itself rotates. The revolution period is one year, and the rotation period is twelve hours."

"But... isn't the sun shining on it all the time? Could it be that the sun is also turning? And turning to the back, is it night?"

can only say……

It's not that everyone's brains are first-class and smart.

However, even if what he said was wrong, it was a very good attempt.

Li Chunfeng said casually, "Scholar Li thinks the sun is a ball of fire?"

"Isn't it? Since ancient times, no one has thought that the sun is a ball of fire. Besides, the moon is also a ball. Therefore, I think everything else should be a ball too." Li Chong said.

"Isn't the moon a cake?"

Someone interrupted again.

"Superficial, that's because you are too far away, your rationality is blinded by what you see with your eyes. Sometimes, what you see is not necessarily true."

At this time, Li Chunfeng had vaguely touched something.But I'm still a bit confused about how to explain the sun that I see every morning always rises in the east and sets in the west.It seems that the doorway has not been found yet.

He frowned deeply. At this moment, he no longer completely rejected Li Chong's point of view.

Instead, try to understand it a little bit deeper.Because if you don't even understand it and criticize it directly, you won't even find a basis to reprimand the other party for being wrong.

He quickly began to write and draw on the ground.

He draws two balls and draws tangents to the two balls.

But the problem is...

It was just a little bit short, just a little bit short, but he still seemed unable to enter that door.

Li Chong then whispered in his ear and said to him: "The earth rotates from west to east. The earth is like a pear with chopsticks inserted. As long as you turn the chopsticks vertically, the whole pear will also rotate along with it. "

"This way, this way..."

"So the sun can only illuminate half of the earth forever, and the day will always be half day and half night."

Li Chunfeng was teased by him, so he also said: "The actual time of nightfall varies with the seasons of the year, so how can this be explained? Moreover, even in a day, the twelve hours may not all be six. One hour is day, and six hours is night."

Li Chong: "That's because it doesn't turn vertically in a serious manner, but turns obliquely."

Next, Li Chong drew him a picture of spring, summer, autumn and winter caused by the intersection of yellow and red, and said: "In the day you said, the twelve hours may not all be six hours in the daytime. The first hour is night, which is very good. In fact, this is also a piece of evidence that can determine where we are on the ball. We, I mean Datang, are almost in this position! Hey, you go get a pear Here, take another chopstick."

(End of this chapter)