This has to be explained by our own subconscious, which has certain defects in our own vision and other senses, which prevent us from understanding the world in the true sense. Pen, fun, pavilion www. biquge。 info In our subconscious, in order to understand the world, we will involuntarily simplify and intuitively make some phenomena, we think that the color of the upper and lower ends of the note is intuitive, and it is simplistic to think that the object is falling on the ground. So if we want to truly understand the world, we have to put aside intuitive feelings and use data to speak. Wang Haoran tried his best to fool around.

"So, it's really possible that this earth is spherical?" Li Shimin asked.

"Your Majesty, this is very likely." Wang Haoran took out another piece of paper, on which were painted several paintings in groups of three circles of different sizes, and continued, "Brother Chen thinks that the sun, the moon, and the earth are all spherical, and the earth revolves around the sun, and the moon revolves around the earth. In this way, as in this diagram, when the earth is between the sun and the moon, the side of the earth near the moon is night, and when the shadow of the earth is projected on the moon, the moon has the phenomenon of full moon and moon absence, and the dark part of the arc on the moon is the shape of the earth. ”

Li Chunfeng has a deep astronomical attainment, and he felt both novel and shocked by Wang Haoran's statement, thought for a while, and quickly thought of another situation, and asked: "Wang Yuma, according to what you say, that day the dog swallowed the sun was actually the moon moving between the sun and the earth, and the moon blocking the sun?" ”

"That's right." Wang Haoran was very surprised, is this Li Chunfeng also a person from the next generation?

"But even if the moon blocks the sun, the moon still shines! When the dog swallows the sun, it should be like a bright moon at night, not a dark night? Li Chunfeng pondered.

"There is some truth in what Li Shilang is worried about, but I don't think that the moon will shine like the sun, but like this land, the sun will shine brightly, and what it doesn't shine is the night. According to previous measurements, the moon is more than 40 kilometers big, 510,000 kilometers away from here, if the moon will shine, then we stand here and look at the moon like we are looking at a candle less than a step away, the distance is so close, and there is nothing else in between, we cannot see the phenomenon of the full moon and the lack of moon, and the moon should always be round. Wang Haoran did not hesitate to throw out the arguments that would be shocking at the moment, the main purpose was to arouse Li Shimin's curiosity.

"What does Li Aiqing think?" Li Shimin doesn't know much about astronomical things, but his curiosity was hoisted by Wang Haoran.

"Back to Your Majesty, Wechen feels that Wang Yuma's speculation is not unreasonable, so Wechen begged Your Majesty to allow Wechen to do a careful study of this."

"Well......" Li Shimin was not in a hurry to express his position, and asked Wang Haoran again: "Haoran, if it is as you said, where do the immortals in the sky live?" ”

Li Shimin's question can be so direct, it can be seen that he still trusts Wang Haoran very much, the emperors of all dynasties and generations have always been called the Son of Heaven, if Wang Haoran's theory does not recognize the existence of immortals, then indirectly it can be regarded as denying the emperor is the Son of Heaven, which is definitely a blow to feudal rule.

Wang Haoran naturally knew this, so he said: "The gods in the sky are powerful, I am afraid that the stars in the sky are like dust, maybe the gods exist outside the universe and can be accessed by extraordinary people." ”

As I said before, ethereal things have to be said in ambiguous words to be durable, Wang Haoran's statement is like this, even in the later generations with advanced technology, no one can have evidence to deny the existence of gods outside the universe, because later generations of people cannot reach outside the universe.

Since Wang Haoran's theory did not deny the existence of immortals, Li Shimin was relieved and said to Li Chunfeng: "Li Aiqing, at present, the world knows very little about this world, and now that the Tang Dynasty is rich and the people are strong, I order you to preside over the relevant research matters!" ”

"Weichen takes the order!" Li Chunfeng was overjoyed, "Your Majesty, Weichen still has one more thing to ask for, that is, can you ask Wang Fuma for a few people to assist Weichen?" ”

Li Shimin didn't want Wang Haoran to be embarrassed, so he looked at Wang Haoran and asked him to say it himself.

Wang Haoran understood, so he asked Li Chunfeng: "I don't know who Li Shilang wants?" ”

"Wang Jingxiu, one of the four sons, and Ma Jingluo, if Wang Juma can let one of the two generals of the royal family come, it would be great."

Wang Jingxiu is good at arithmetic and physics, and Ma Jingluo's understanding of light is also unmatched, if they join Li Chunfeng's team, they will definitely be able to show their talents. As for Chen Jun and Chen Jie, Li Chunfeng must have thought that some special tools would be needed in the research process, and this would require them to develop them. However, Wang Haoran can't do without these two generals here, and after some consideration, Wang Haoran said: "It's naturally a good thing to be able to serve the imperial court, my third brother Wang Jingxiu and Ma Jingluo, I can give them to you, but Chen Jun and Chen Jie, I have other things that they have to do, so I can't arrange these two people." Li Shilang wants them, just to let them design some required tools and the like, or I will arrange Yu Zhaoyun for you, he is also very good at mechanical equipment. ”

"Of course it's okay, then the lower official will thank the king first!" Li Chunfeng has also heard of Yu Zhaoyun, after all, Yu Zhaoyun is also one of the four sons of the royal family.

Studying the theory of the circle of the earth is a good errand that can make Wang Jingxiu and others famous, Wang Haoran naturally cares, and as soon as he gets home, he writes a letter to someone to send to Zhongcheng.

After more than 20 days, a young man from the Hanlin Academy put a stack of exam papers on Wang Haoran's desk, saying that this was the last batch of exam papers. Wang Haoran was taken aback, this was embarrassing, Li Shimin asked him to pick out 200 candidates, but now Wang Haoran has only selected more than 60 people, which is not far from ordinary.

"Are you sure this is the last batch of exam papers?" Wang Haoran confirmed again.

"Can't be wrong, these exam papers are sent by each of the states and counties across the country after they are collected uniformly, and the number is right." The young man replied.

Wang Haoran was speechless, the exam papers sent from all over the country are not small, maybe his requirements are too high and he has given up too much. Fortunately, he had put aside some exam papers that felt average before he was waiting to be determined, and he took them and counted them, but there were only more than 30 people, and if he picked out a few more from the exam papers in front of him, he could barely make up enough for 100 people......

In the end, Wang Haoran took the selected 100 exam papers into the palace to report to Li Shimin, he didn't do anything indiscriminately, if Li Shimin was too little, then let him send someone else to find it from those discarded exam papers!