Zhu Youzhen looked at the three scholars in front of him who were looking for the bottom of his face, and couldn't help but have a headache. In fact, for him, the decimal system plus the three units of weights and measures that can be converted to each other, such as length, volume, and weight, has already built the system of weights and measures he needs.

It doesn't matter if a standard unit of length is 1/40 million of the circumference of the equator, as long as the standard unit of length can be verified repeatedly.

But when he saw Liu Yourong come in with the articles written by the prisoners, he wanted to help them end the argument, so he couldn't help but say more. Growing up under the cramming education of later generations, he knows how to use theorems and formulas, but it will be a little difficult for him to explain the origin of theorems and formulas clearly.

Why use the circumference of the equator, because the earth is not a real sphere, but an elliptical sphere close to a sphere, but Zhu Youzhen does not know why the earth is elliptical, because there are no satellites to directly observe the entire earth.

Zhu Youzhen could only close his eyes and said nonsense: "Why is this the circumference of the equator?" I think you should know that the Earth is a sphere that is constantly moving, and it not only revolves around the sun, but also rotates itself. ”

"Your Majesty has read Copernicus's book?" Deng Yuhan and Jinnige both let out low voices of surprise.

"Who was Copernicus?" Xu Guangqi was very interested in the theory that the earth orbits around the sun and rotates, so he asked curiously.

Zhu Youjian realized that although Deng Yuhan was surprised, there was excitement in his eyes, while Jinnige's eyes flickered a little.

"Is Monsieur Copernicus still alive? Oh, when I was still a king, a merchant once gave me a book of overseas strange stories, and once mentioned the theory of Mr. Copernicus, I wonder if the books you brought this time, Mr. Kinnige, do you have a book by Mr. Copernicus? Zhu Youzhen said nonsense.

Deng Yuhan and Jin Nige didn't know anything about the pro-vassal system of the Ming Dynasty, so they believed Zhu Youzhen's statement, but Xu Guangqi knew that it was impossible for King Xin to come into contact with any merchants who had returned from overseas, although he was a little surprised why Chongzhen was lying, but he still kept silent and did not expose him.

Deng Yuhan was silent for a while, then spread his hands and said, "Mr. Copernicus died 83 years ago. ”

Zhu Youzhen said with a little disappointment: "It's really regrettable news." ”

Kinnige, who stood aside, found that he had to say something, otherwise today's conversation would spread and lead to the dissatisfaction of the Holy See with the Chinese Jesuits.

As a scientist, Kinney did not reject heliocentrism, but as a missionary, he could not openly support heliocentrism, which was contrary to the Bible.

Kinnige stubbornly said, "The writings of Mr. Copernicus should be in the books I have brought. But Your Majesty, I have always believed that the earth revolves around the sun, and that the earth rotates, which is a fallacy. You can read such books to broaden your knowledge, but don't be fooled by such doctrines. ”

Deng Yuhan shrugged his shoulders at Zhu Youzhen, saying that he did not agree with Jinnige's statement, but he did not stand up to refute it.

Xu Guangqi, who had been pondering, suddenly shouted, "I understand, the earth's rotation around the sun, and the rotation of the earth, can just explain the phenomenon of day and night and the change of seasons. One rotation of the Earth should be exactly 12 hours, and one rotation of the Earth around the Sun should be exactly one year. Well, the direction of the Earth's rotation should be from west to east, so as to explain why the sun rises in the east and sets in the west. ”

Jin Nige rolled his eyes at Xu Guangqi, thinking a little depressed in his heart, he knew that it would be like this, this Chinese scholar has always been very talented in thinking about natural science.

The heliocentric theory and the rotation of the earth explain the natural phenomenon of the exchange of the seasons and the change of day and night throughout the year, which is why Copernicus's heliocentric theory was so influential when it came out. In contrast, the geocentric theory upheld by the Holy See is too far-fetched.

Jinnige had to throw out the last talisman of the Holy See, and he asked Xu Guangqi rhetorically: "Let's not mention how the earth revolves around the sun, let's talk about the rotation of the earth alone. If the Earth is really rotating, why do those of us on the ground feel nothing? ”

At this time, not only Xu Guangqi was a little confused, but even Deng Yuhan fell into thinking. However, as for how to prove the rotation of the earth, Zhu Youzhen knows very well. When he was still Su Changqing, he once visited the Beijing Planetarium and saw the famous Foucault pendulum.

Zhu Youzhen waved his hand and said, "Why don't you come together to do an experiment?" To prove whether the Earth is rotating, it is useless to debate alone. Let the facts prove whether Mr. Copernicus's rotation of the earth is the truth or not? ”

Deng Yuhan immediately nodded and agreed: "Yes, Your Majesty is right. But what kind of experiments should be done to prove whether the earth rotates or not? ”

Zhu Youzhen did not let a few people get into a dispute about how to prove the experiment, he simply and clearly explained the principle of Foucault's pendulum, and the three scientists immediately agreed with the method of this experiment.

And Zhu Youzhen's successful crooked building, finally no need to explain why the earth is elliptical, and no longer need to explain that he knows the circumference of the earth's equator from the poem "sitting on the ground and traveling 80,000 miles a day". As for how this verse came about, God knows.

Xu Guangqi, Jin Nige, and Deng Yuhan finally stepped back from the high platform and walked to the corner to discuss how to make Foucault's pendulum experiment. At this moment, they were more concerned about the issue of the rotation of the earth than they were about why Chongzhen wanted these prisoners to write such an article.

Zhu Youzhen glanced at the three scientists who were discussing science in the corner with some envy. He knew that in the future, the names of these three would definitely become milestones in the history of science and technology.

"Maybe I should name this experiment Chongzhen Pendulum, or Youzhen Pendulum, or Changqing Pendulum..."Until he took over a large stack of articles in Zhu Yourong's hand, Zhu Youzhen was still thinking so crankily.

Zhu Yourong respectfully said to Chongzhen: "Guozijian is divided into six halls, and the number of prisoners is 459. The ministers collected the articles of the supervisors of each hall separately, and the articles in the hands of the six people, including the ministers, each of them were the prisoners of the country. His Majesty was holding the article of the 39 people of the Frank Hall. ”

The Guozi Prison is divided into six halls: spontaneousness, cultivation, sincerity, justice, Chongzhi, and Guangye, and the spontaneous hall is the highest level, and generally entering this hall means that you can be released from prison and become an official at any time. However, since the imperial examination system flourished and the way of selecting talents gradually declined, this spontaneous hall has become unworthy of its name, and many prisoners have not found a chance to be in the hall for three or four years.

Cultivation and sincerity are the intermediate schools in the Guozijian, and they are generally admitted to the Guozijian to study, and they can only be selected into these two schools after a certain achievement. But today, when the school system is in decay, as long as it is a powerful child and a child of a wealthy businessman who has opened up the joints with money, then even if he has just been imprisoned, he will be quickly arranged into these two schools.

As for justice, chongzhi, and Guangye are the lowest grades, and the inmates who have just entered the prison, and the inmates who have average grades and have no money to bribe, are generally in these three academies.

When Zhu Youzhen first started, he read a few articles carefully, but he soon got bored. The articles written by these prisoners do not break sentences, and almost three sentences are used with an allusion, which makes a modern person really a little confused to read.

Well, it's normal that there are no sentence breaks, because Daming hasn't punctuated yet. But Zhu Youzhen made it clear before that he asked the inmates to write about their hobbies or what they are good at.

But the prisoners of this spontaneous hall are either good at reading, or good scriptures, or good Zhou Li. Looking at these articles from Zhu Youzhen's eyes, these prisoners are either a group of hypocrites, or sages comparable to Confucius and Mencius.

Well, if there were really sages in this country's prison, Chongzhen would not only be seventeen years. Zhu Youzhen's speed of reading the articles became faster and faster, which made Liu Yourong a little frightened, he didn't think that this was a manifestation of His Majesty the Emperor's attention to these articles.

At this moment, Liu Yourong secretly scolded in his heart: "These bastards of the Reckless Hall are arrogant and arrogant on weekdays, and they regard themselves as immortal talents, but today there is no one who can make His Majesty's eyes stay a little, and he seems to be too tolerant of these bastards on weekdays." ”

It took Zhu Youzhen less than a quarter of an hour to flip through the articles in his hand, and he threw all the articles in his hand on the empty seat on the right side of the chair, then looked up and said, "The next one, which one?" ”

Zhu Yourong took a stack of articles from the hands of his colleagues around him, handed them to Chongzhen, and said grovelly: "Your Majesty, it's a monastery." ”

The speed of Zhu Youzhen's reading did not slow down, but Zhu Yourong found that Chongzhen had divided it into three parts after reading the article. The seat on Chongzhen's right hand is divided into two parts, with the most articles on the far right, then the most articles near Chongzhen's right, and finally the few articles on the left hand vacant seat.

It took nearly one hour for Zhu Youzhen to finally go through all the articles of the prisoners. The far right side has the most articles, about 200 or so, followed by nearly 200 on the right, and finally about 4 or 50 on the left.

After reading all the articles, Zhu Youzhen finally stretched his somewhat sore back. In fact, it can't be regarded as reading it, it can only be said that he classified it once.

Those articles written by prisoners who were full of nonsense and regarded Jingyi, classics and Zhou Li as the best prisoners were all thrown by Zhu Youzhen on the far right.

And it is written about the prison articles that the literati and scholars love, although they are very honest. But for Da Ming and Zhu Youzhen, such a person is really useless now. Only in the end, the 4 or 50 articles with various hobbies really made Zhu Youzhen feel that the owner of these articles was still useful.