Chapter 1728 The shadows in the hearts of countless college students. Happy Dragon Boat Festival to book friends!
"I have met with Your Majesty, Yang Zhu, the Chief of the Gezhi Courtyard, and Cao Zheng, the Vice-Chairman of the Courtyard. I am late to pick you up, so I would like to ask Your Majesty to atone for my sins." In front of the gate of Gezhi Courtyard, Yang Zhu and Cao Zheng, who heard His Majesty's sudden arrival, hurried over. He hurriedly saluted.
"You two beloved sires, you don't need to be polite." Yun said with a smile: "Today I made a surprise attack. I didn't send anyone to inform you two dear sires in advance. What's your crime?"
"Thank you, Your Majesty." The two of them bowed again, straightened up and stood in front of Yun. Yang Zhu raised his head slightly and took a few glances, and saw the Crown Prince and several other princes, Princess Guangling and Princess Ganling (Wen Luo's title). I was surprised in my heart and couldn't help but ask: "May I ask what your Majesty has to do today? Do you want me to gather everyone in the Gezhi Courtyard to listen to the holy teachings?"
"No need." Yun said: "I came to Gezhiyuan today. There is no need to let many people know." He turned to look at Cao Zheng: "I heard that Aiqing and Brunevsky have developed a new Mathematics?”
"Yes, Your Majesty, I and Mr. Bolu studied astronomy and found that some problems cannot be answered according to current mathematics. In order to continue to study astronomy, I had to study mathematics. With the help of several mathematicians from Tianfang, I and Mr. Bolu Sir established this mathematics." Cao Zheng replied.
When Yun heard this, he immediately wanted to ask him what astronomical problems could not be solved based on current mathematics, and what was the new mathematics they had developed. But he suddenly remembered that this was the gate of Gezhiyuan, and hurriedly said: "I am somewhat interested in this subject of mathematics and would like to hear Aiqing explain it."
"Your Majesty and Your Highnesses, please follow me." Cao Zheng said hurriedly. Yun nodded slightly. Cao Zheng hurriedly took them to his laboratory, while Yang Zhu went to find Borunevsky.
After a while they came to Cao Zheng's laboratory. Yun looked around a few times and saw that although the room was called a laboratory, except for two large clairvoyants, there was nothing in the room that could be called experimental objects. Instead, there were books everywhere on the table, and many cheap pieces of straw paper were covered with writing. 'These must be used for studying mathematics,' Yun thought.
"The mess in my room makes Your Majesty laugh." Cao Zheng saw His Majesty looking at the room, his face turned red, and he said hurriedly.
"That's nothing." Yun smiled.
Cao Zheng hurriedly cleared the table, piled up the discarded straw paper into a ball, threw it into the wastebasket, and stacked the books together. At this time, Yun noticed a triangular transparent object on the table and asked: "Cao Qing ,What is this prism used for?"
"Prism?" After hearing Yun's words, Cao Zheng was stunned for a moment. Seeing Yun pointing at the triangular transparent object on the table, he subconsciously said: "So this object already has a name? Triangular prism, it is indeed very appropriate."
Only then did he answer Yun's question. "Your Majesty, Mr. Chen and Bolu discovered the use of this thing accidentally. One day, Chen Ge sent a person in the courtyard who specialized in studying glass to see if he had any more transparent glass. There was this prism in his room. I picked it up out of curiosity and saw that a beam of sunlight came in and hit the prism, but on the opposite wall it was actually divided into red, yellow, blue and other colors."
"Sunlight can be divided into many colors?" Wen Luo couldn't help but ask.
"Yes, Your Highness. I was also very surprised at the time. I studied with that person for a long time, but nothing was found. However, although I have never studied why sunlight can be divided into so many colors, I don't know how to synthesize so many colors. It's white light, but with the help of a prism, I, that person and Mr. Boru developed a new kind of clairvoyance."
As Cao Zheng spoke, he picked up a medium-sized clairvoyant placed on the windowsill, walked up to Yun and explained: "This clairvoyant is a new type. Its principle is to use a concave mirror to divert the sunlight or sunlight entering the lens tube. The moonlight gathers and is reflected on the plane mirror at the front of the lens tube, and then the plane mirror reflects the light into the eyepiece outside the lens tube, so that you can see the stars."
"The ratio of the focal length to the length of the lens tube of this kind of clairvoyance is extremely high, up to twenty times. Even if the lens tube is short, it can still observe extremely distant stars. It is very suitable for outdoor observation."
"Such a clairvoyance." Yun started to play with it. He knew nothing about telescopes in his previous life, and he didn't know how to classify this new type of clairvoyance. However, since Yuxin invented it and it was a useful new invention, of course he should encourage it. He immediately said that he would give the research glass to him The man was rewarded with fifty guan of gold. Cao Zheng hurriedly thanked the man on his behalf.
At this time, Yang Zhu had already arrived here with Borunevsky, and Sichengtang, Wen, and Zhou Wei had also arrived. Yun put down the new clairvoyance and accepted Borunevsky and Sicheng first. After receiving the courtesy from Zhou Wei and others, he exchanged some words with Wen, then turned to Borunevsky and Cao Zheng and said: "I came today because I heard that Aiqing and Cao Qing have developed a new Mathematics, I want to know something about it.”
"Dear His Majesty the Emperor, you value mathematics and science far more than any monarch I have ever met. You will definitely be remembered in the history of mathematics and science." Brunevsky slapped a horse first. fart.
Yun smiled faintly. He was already destined to be remembered in many 'histories', and he was not excited about Borunevsky's words. He just said: "I heard that this new mathematics is due to some problems. According to current mathematics, there is no way to answer it. In order to continue studying astronomy, we have to study hard to get it?"
"Your Majesty, you are right." Borunevsky answered Qi Yun's question: "In order to study why the sun, moon and stars move like this, and why they can maintain such movements, I and Cao Zheng need to study many issues. The most important of them are these three questions: how to calculate the speed of a star at a certain point in time, how to calculate the tangent line of the curve, and how to accurately calculate the length of the curve and the area enclosed by the curve. We initially wanted to start from the original We used modern mathematics to figure out how to answer these questions. But slowly, we discovered that these questions couldn’t be answered with current mathematics.”
"What's the tangent?" Min'er asked at this time. She found that she didn't quite understand what Borunevsky was talking about, so she picked up a word she didn't understand at all and asked.
"Sister, a tangent line refers to a straight line that just touches a certain point on the curve." Wen Luo explained. She heard her teacher Zhou Wei mention this concept. But after she explained, Min'er still didn't understand. , and not only Min'er, but no one else understood it either. Wen Luo could only pick up a piece of straw paper and a pencil, draw a circle on it, and said: "The tangent line is only related to this circle. A straight line with an intersection." She said and drew a tangent line herself.
After her explanation, Min'er, Wenyuan and others barely understood the concept of tangent, although they still didn't know what the meaning of tangent was.
"In order to study these problems, I had to study mathematics on my own." Cao Zheng continued to explain: "I first learned from Liu Hui's circle-cutting technique during the Three Kingdoms period. , so that it cannot be cut, it will be integrated with the circumference without losing anything." After being inspired, Chen et al. first thought: If the curve is divided into thousands or even tens of thousands of segments, then each segment of this curve is equivalent to a straight line, and then I will first conduct research using a perfect circle, assuming..." Cao Zheng continued to talk.
The expressions on the faces of Min'er, Wen Yuan, Wen Qi and Wen Yin were completely stunned. They could understand every word Cao Zheng said, but when combined together, they were incomprehensible.' Cao Zheng said it clearly. It's in Chinese, but I can't understand it at all. Even if it's the content in the legendary Book of Heaven, it's just like this.' Min'er thought.
Since she couldn't understand it at all, and she had no interest in mathematics, she looked around. When she saw Wen Luo's expression was very calm, she slowly leaned over and asked softly: "Can you understand?"
"I don't understand." Unexpectedly, Wen Luo answered very honestly.
"Then why do you have this expression?"
"Because my sister has heard Mr. Zhou talk about it before. Even if she doesn't understand it, it won't be like hearing it for the first time." Wen Luo said with a smile.
"You're a narrow-minded ghost." Min'er laughed. Wen Luo chuckled twice but didn't answer.
Min'er looked at the others again, and saw Wen's face was serious, nodding slightly from time to time, and asked Wen Luo: "Wen is only two years older than you, but he understands, or he doesn't know how to pretend like you." Understand?"
"Brother Six probably doesn't understand much, but Brother Six is different from my sister. Mr. Zhou just briefly talked to my sister. Mr. Si should have explained it carefully to Brother Six. Brother Six is always better than my sister."
"But it's not much better. Mr. Zhou and Mr. Si's mathematics are not as good as Mr. Cao and Mr. Bolu. I'm afraid it will be difficult for me to understand them, let alone teach others." Wen Luo said.
But she added: "My sister is just a little surprised. My father seems to understand this."
Min'er also looked at Yun after hearing this, and was surprised when she saw that her father's expression was not only completely different from that of Wenyuan and others, but also that he didn't seem to be pretending to understand: "Father won't act in front of us. He should do it at noon today." This is the first time I’ve heard about this new kind of mathematics. How can I understand it? Could it be that my father’s mathematical talent is so high?”
Little did they know that the reason why Yun could understand it was because what Cao Zheng and Borunevsky were describing was a kind of mathematics that had impressed him deeply in his previous life.
'It's incredible that calculus has been studied now! This is calculus, one of the higher mathematics contents that tortured many college students in the previous life! It is only the fifteenth century AD, so far away from history. It was more than 200 years before calculus was invented. Cao Zheng and Borunevsky were really monsters! But this is enough to show that Easterners are no worse than Westerners in studying mathematics, just because no one pays attention to it. Being backward, once someone pays attention to it, it will definitely develop rapidly.' Yun was thinking wildly while listening.