"satellite?"

When everyone heard the immortal's name, they all said curiously.

Ying Zheng also muttered, and then said with some enlightenment: "Does this name come from the stars in the sky?"

Li Yang gave a thumbs up and praised: "Your Majesty is amazing, the teacher is already nameless, and this pseudonym all comes from heaven."

When Li Yang talked about lying, his face was not red and his heart was not beating. He said as if it was true.

In his opinion, anyway, the gods and immortals in later generations were half of the professional and fictionalized by clergy, and half were made of heroes from the world with incense.

Nowadays, even if I say that the teacher’s name is satellite, it is impossible for someone to say it is fake.

As for the future, when technology advances and people really create satellites, it is no longer my business.

You can take it as you like.

Of course, there is nothing we can do about using the name of "gods and immortals" to make Ying Zheng accept the idea that the earth is round.

Not to mention that in this BC, even more than a thousand years later, Aristotle gave scientific evidence that the earth was round and people did not believe it. It was not until the Sailun sailed around the world that the world began to slowly accept this view. It is conceivable how difficult it would be to make the world believe that the earth was spherical.

By saying "the sea level is arc-shaped", it is absolutely impossible to think that the earth is spherical.

Since people don’t believe in science, they can only rely on the name of gods. In ancient times, many things were originally stories such as gods.

For example, why does thunder occur? Because there is a thunder god on it.

Why is there only one sun in the sky? Because other suns were shot down by Houyi.

Why are there people in the world? Because Nuwa pinched it out.

There are too many examples like this. In ancient times, as long as everything is spoken in the name of gods and immortals, it can be trusted.

However, there was a person who was lying to Li Yang, and he was impressed by his ability to be lying to Li Yang. This person was Xu Fu, who had returned to the court a few days ago.

After leaving the Prime Minister's Mansion yesterday, he went to the palace to offer kiwis according to the verbal lectures taught by Li Yang. In addition, the fortune-telling was effective at the time, so the emperor did not punish him and was able to save his life to court today.

At this time, Xu Fu was amazed in his heart, "What a guy, he is even better than me when he makes up lies!"

"So, is the earth really round?" Sure enough, Ying Zheng was confused when he heard that the earth was spherical and was said by the gods.

Li Yang knew that it was time to strike while the iron was hot, so he said, "Your Majesty, the earth is spherical, but it is actually scientifically based."

"Oh? Tell me quickly!" Ying Zheng was very interested.

Of course, all the civil and military officials were also very curious at this time, wanting to know what other reason Li Yang could tell.

Li Yang said: "Xu Fu is here today. In fact, he has the most say in whether the earth is round or not."

"What? Xu Fu has the most say!"

Suddenly, everyone looked at Xu Fu in surprise.

But Xu Fu looked confused.

How could I know that this world is round and square?

Xu Fu originally wanted to help Li Yang fulfill this lie, but when he thought that the lie was too ridiculous, he finally shook his head: "Prime Minister, how could I know this?"

Li Yang smiled: "Actually you know, it's just that you didn't expect it."

"Oh? Then please give me advice from the Prime Minister." Xu Fu said politely.

"As the saying goes, you can only see far when you stand high. Similarly, only when you are flat can you see the sky. On land, your vision is naturally blocked by mountains, but the sea is boundless and unblocked."

Speaking of this, Li Yang looked at Xu Fu and said, "I ask you, you have been crossing the ocean all year round, have you not found that the sea level is arc-shaped?

As soon as these words were said, Xu Fu was stunned: "This... the sea level is indeed arc-shaped!"

Li Yang smiled and said, "If the earth is flat, how could the sea level be arc-shaped? Therefore, this earth is a sphere, and the sea level is evidence."

At this moment, everyone frowned.

Especially Ying Zheng, he also went out of the sea and took a boat during his eastern tour, so the sea level was arc-shaped, and he had also seen it with his own eyes.

For a moment, everyone became surprised and suspicious. Could it be... the world is really a ball?

It is already a success to make people in this era question the world of the sky.

Li Yang continued: "In fact, not only the earth is spherical, but the sun is spherical, but the moon is also spherical. Because they are far away from us, we look at them, just a ball hanging in the sky. In fact, if people can stand on the sun or the moon, they will find that our place is also a ball."

Everyone was shocked by Li Yang's shocking remarks.

At this time, the mathematician Zhang Cang was more interested in thinking, and immediately asked a question: "I would like to ask the Prime Minister, if the earth is as you said, it is a sphere, like the globe you made, how many suns are there? Will the people on the back of the earth always face the night? Why do we have day and night again?"

"It's a good question. I have to do an experiment!" Li Yang smiled.

Everyone was confused.

I wonder what Li Yang is going to do?

Li Yang knew that this was a good opportunity to popularize science to the world. If they could know that the earth was rotating, it would lead to the astronomy and physics of the Qin Dynasty more than a thousand years ahead of schedule.

Li Yang immediately asked the palace servant to get a candlelight and put it above the east of the globe.

Then he said, "Please look, this globe is the world where we live. This candlelight is like the sun in the sky. Where the sun is shining, it has light, so it is daytime, and the back is night. The earth is actually alive, it will rotate..."

While saying this, Li Yang slowly rotated the globe and said, "Look, when the earth rotates, the sunlight gradually stopped illuminating the place just now, so it turned into night. Until... the earth continues to rotate, the sun's dawn slowly descends to this earth again. This is why there are principles of day and night."

“…………”

silence!

The entire hall was silent!

Everyone, look at me, look at you, and everyone was completely shocked by this experiment!

It’s not that this experiment is difficult to understand, but that this experiment is too simple and easy to understand. So after reading this experiment done by Li Yang, everyone can see why there are day and night at a glance, and the theory is even more unscathing.

Oh my God! Is what Li Yang said true?

At this moment, even those who thought Li Yang was ridiculous before had to believe it at this moment. Because, apart from Li Yang's statement, you can't find any other theories to explain why there are day and night.

Seeing everyone's surprise look, Li Yang knew that his experiment was successful!

At this time, it was still the mathematician Zhang Cang who asked: "According to this point, the back of the earth is also heaven, looking up at it, so what is this heaven?"

Li Yang said: "The sky is a vast universe. I don't know how big the universe is. It includes the earth, the moon, the sun, and the more distant planets we live in. The stars we can see may be as big as the earth we live in. In short, the universe is infinitely large. It is precisely because it is infinitely large, so you can't tell whether we stand on the back of the earth and whether our heads are facing down. Because the universe is so big, there is no distinction between up and down. It is so big that it loses its concept."

Finally, Li Yang concluded: "So, why doesn't the river on the back of the earth flow up to the sky? In fact, it is because the earth has gravity, so the apple will fall to the earth and not to the sky."

This time, no one raised any questions, and no one dared to laugh at Li Yang as nonsense.

Because, with the experiment just now, the theory he is talking about is not only reasonable, but also impeccable.

Ying Zheng exclaimed: "I didn't expect that you had such a unique insight into astronomy theory, which really surprised me."

Yes, Ying Zheng was really shocked by Li Yang's astronomical theories, especially the experiment, which opened his eyes.
Chapter completed!