Chapter 970 Mathematical and Chemical Fundamentals
"There is one more thing you can think about when you go back." Yunxi added, "Why can boats float on the water?"
"Your Majesty, I think that because wood can float on the water, boats made of wood can float on the water," Zhou Wei said.
"Then why can wood float on the water?" Yunxi asked again.
At this moment, the three of them didn't know how to answer, and they said in unison: "Your Majesty, please make it clear."
"I don't know either. So I need you to go back and study it." Yunxi felt very uncomfortable: Archimedes had discovered the law of buoyancy in ancient Greece more than 1,600 years ago, but people in the Ming Dynasty actually discovered it now.
Don't know yet.
"In addition, I still have a few questions for you to study." Since they have to make up for all aspects now, and it is not easy to make breakthroughs in astronomy, it is better to let them study more physics and mathematics knowledge. More
What's more, all aspects of science are connected. Maybe the east is not bright, but the west is bright. They drew inspiration from astronomy by analogy.
"You also need to calculate how many times the surface area of a sphere is the area of its largest inscribed circle, how much the volume of a sphere inscribed in a cylinder of equal length and width is the volume of the cylinder, and the weight of the objects placed when both sides of the lever are balanced and the weight of the lever
The relationship between lengths, calculation of pi,..." Yunxi asked five or six questions in a row.
Yang Shiqi and others didn't know why Yunxi asked them to study these issues and asked them, but Yunxi just said "very useful", and they could only ask a few more words they didn't understand - such as "inscribed sphere"
, 'inscribed circle' and so on - the meaning, after understanding it, I bowed and agreed.
After giving all these instructions, Yun Hexuan called Ai Su to his side and said to Yang Shiqi, Zhou Wei and others: "Since you have entered the palace, I happened to have something else to tell you, so I told you by the way."
Is the hospital still using arithmetic to make calculations?"
"Yes, Your Majesty." Yang Shiqi replied.
"Do you know the Indian numbers?"
Zhou Wei shook his head, but Yang Shiqi and Cao Zheng both bowed and replied: "I know."
"That's good." Yunhe said with a smile: "Indian numerals, plus the symbols +, -, =, are very convenient for arithmetic, much more convenient than calculating chips."
"More importantly, the arithmetic chips are played with wooden sticks, and the calculation process cannot be retained. However, Indian numerals can be written on paper and calculated, and the calculation process can be preserved. This is another advantage over the arithmetic chips."
"From now on, everyone in Gezhiyuan must use Indian numerals and Indian symbols to calculate calculation problems on paper. If you solve a problem that I asked you to study, you must use a brush or pencil to write down the calculation process on paper.
"Retain it for a long time." From a research perspective, the method of solving a problem is more important than the conclusion of solving the problem. Didn't you see that in history, after the collapse of Lao Maozi, China pulled various design drawings from Lao Maozi's territory?
Even if the design turns out to be wrong, we will not let it go.
"When Gezhiyuan researches more things, I will put them all into a book, bind them and publish them. And whoever researches which theorem, I will order his name to be recorded in the book, and it will be passed down forever!"
Xi said.
"Thank you for your kindness, Your Majesty." Zhou Wei and Cao Zheng said excitedly.
Of course, the first thing people in this world want is to be fed and clothed. But after being fed and clothed, isn’t the higher pursuit of fame before and after death? Now that Yunxi wants to give them this reputation, their names will be as good as
How could it be possible not to be excited that Zu Chongzhi was passed down from generation to generation? Not only them, but also Yang Shiqi was moved and wanted to truly devote himself to Gezhi research; Ai Su, standing aside, had his eyes straightened and his face was full of envy.
"Ai Aiqing, I have sent you to Gezhiyuan these days to help them use Indian numerals. If you are willing, you can also study the problems I just mentioned." Yunxi smiled at Aisu again.
"Thank you for your kindness, Your Majesty." Aisu immediately knelt down and said very happily. He was happy partly because he could go to Gezhiyuan, and partly because Yunxi called him Aiqing, which was rare for officials of his level. of honor.
After they regained their composure, Yunxi said to Cao Zheng: "You are currently in mourning for the old Marquis Huaiyuan. I also know that you are sad for your father. Just rest at home and come back to the funeral after the mourning period."
Then he said to Zhou Wei: "You are currently in charge of Gezhiyuan at the Ministry of Industry. I know that your favorite is astronomy, but if there is no progress, it is better to study the issues I just mentioned. These are different from astronomy. You can study it with simple objects, you don’t have to use very large things. You can study it when you are on duty at the Ministry of Industry." Since Zhao Haode, the minister of the Ministry of Industry, knew Yunxi’s intention of sending Zhou Wei to the Ministry of Industry, of course he would not There are too many errands assigned to him, so Zhou Wei is very leisurely on weekdays.
"Yes, Your Majesty." Zhou Wei understood that the emperor was taking care of himself and immediately agreed.
Yunxi said a few more words and asked them to retreat.
Then he stretched and said to Huang Lu: "Xuan Qitai comes to see you. No, I will go see him." After all, Qitai is his confidant, or former confidant, so he still has some dignity. He then stood up again and walked to the side. temple.
…
…
Qi Tai stood in the palace, pacing restlessly. He didn't know why Yunxi called him here, and Huang Lu, who came to deliver Yunxi's oral instructions, did not dare to elaborate, but only hinted that it was something he had done that made the emperor unhappy. , so he was standing in the palace at this time, thinking about what he had done to make Yunxi unhappy.
'Is it that the food prepared for the northwest was not all allocated within the specified time? But at that time, there was not enough food in Henan and Shanxi, and it would cost money to transfer it from other places. We had to wait a few days for the autumn gifts from Henan and Shanxi to arrive. Not only does disbursement save money on the road, it's also not slow in terms of time.'
'His Royal Highness the King of Liao asked for food but didn't give it to him? But according to the regulations, the feudal king cannot give money or food without His Majesty's permission.'
‘Is it because the Indian numerals were not fully promoted in accordance with the emperor’s wishes? This matter is indeed an oversight on my part, but it is not a big deal and will not make His Majesty so angry that he has to call me from the Ministry of Household Affairs.’
Qi Tai, who had been thinking for a long time but couldn't come up with a result, patted his head depressedly. "Since the founding of the industry three years ago, the contact with the emperor has become less and less. He can't even guess the emperor's thoughts. This is not possible. Take advantage of it." This is an opportunity to communicate more with the emperor after admitting his mistake. Although Qi Tai is an upright minister, he is not as rigid as Hai Rui.
Just as he was thinking about it, a voice came from the door: "Your Majesty has arrived!" He hurriedly adjusted his clothes and stood facing the door.