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Text Chapter 36 Teaching

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    Today's situation was something Yunyang could never have expected.  It was originally just a peaceful and peaceful morning, but now it turned into this.  Yunyang is a laid-back person, and he can occasionally teach astronomy knowledge. However, Yunyang really feels a little headache if Yunyang is asked to answer all the questions from so many students.  What's more, because these students have no relevant basic knowledge of astronomy, and they don't even know about gravity, these students ask all kinds of strange questions, many of which even Yunyang feels unable to answer.  "Don't crowd, don't crowd, be quiet, be quiet!" Yunyang was furious and shouted loudly in an attempt to quiet the students, but his voice was always drowned in the sound.  The students in the Qiankun Martial Arts Academy are all the elites of Shenghua City. They have at least the second level of physical cultivation. They are Lianjiazi and have loud voices. Yunyang's pitiful voice is really nothing.  At this moment, Yunyang heard a cold snort.  The sound of this cold snort was not too loud, but it seemed to contain unparalleled penetrating power and deterrence.  No matter how noisy or loud the sound is at this moment, it can't stop this cold snort from reaching people's ears.  This voice is very familiar to Yunyang.  Yunyang turned his head, and sure enough he saw Hong Dou standing aside with an expressionless face, motionless.  All the students¡¯ noises subsided after this cold snort.  Yunyang reacted immediately and shouted to the group of students: "Everyone go to class now. Don't huddle together here. Come to me with your questions later and I will answer them one by one." "  Master Yun, this question has really troubled the students for a long time, and they can¡¯t sleep at night. If they can¡¯t get the answer today, they can¡¯t concentrate even if they go to class or the martial arts field, so I asked Master Yun to answer the students¡¯ questions first¡± ¡°  Yao Fei! Your question is not as important as mine. I made a bet with my classmates. Today I will let Uncle Yun answer it and make a judgment for us" "No, Uncle Yun, you can't.  Let¡¯s go!¡± ¡°Let¡¯s answer our questions first¡± Qiankun Martial Arts Academy has always had a strong academic style, and there is usually not much class consciousness.  If it was for other reasons that the teacher was blocked here and not allowed to leave, he might still be punished, but at this moment, he came here to seek knowledge. This is the biggest hat in Shenghua City. No matter how you say it, there is always nothing wrong with seeking knowledge.  , even if the most severe Zhao Ke comes, he may not be able to punish them.  Therefore, all the students have made up their minds and will not let Yunyang leave without finding out what happened today.  This will harm Yunyang.  In his previous life, when facing elementary and middle school students to popularize science, Yunyang tried his best to make his lectures more interesting. Those elementary and middle school students always seemed to be indifferent. Yunyang had never faced this situation before.  of battles.  To put it in simple words, in this world, the severely backward astronomical knowledge can no longer adapt to the practitioners who are getting stronger and have a wider vision.  Yunyang opened a new window at this time, showing a new world to the students who had the strongest thirst for knowledge.  Although it only showed a little bit, it was enough to make the students besiege Yunyang like sharks smelling blood.  Seeing that the situation was about to get out of control again, Yunyang couldn't help but feel a little troubled.  After thinking for a moment, Yunyang finally had no choice but to compromise: "Let's do this. Don't gather around here. Let's go to the square by the small lake. As if we were in class, pay attention to order and ask me questions one by one. First,  As promised, if there are still people making noise, I will turn around and leave, and I will not answer any questions again. " "That's very good, very good." "Hurry up" A group of students arrived in a huge force with Yun Yang in their arms.  In the square next to the small lake, several senior students with higher cultivation levels spontaneously stood up to maintain order. Students with good intentions moved seats over, and everyone sat down in several lines in front of them.  , and some students prepared a stage, a blackboard and some chalk for Yunyang, which gave Yunyang a little bit of the feeling of taking a science class in his previous life.  ¡°It¡¯s really weird.¡± Yunyang murmured to himself.  "It can be seen that everyone is very interested in this subject of astronomy and has a thirst for knowledge, which is a good thing. However, everyone should not aim too high. Some problems are really not something you can touch now. We should start from the most basic stage.  Start. So, if you are interested in astronomy, I will teach you some basic knowledge today. In the future, you can use this knowledge to analyze the movement of stars in the sky and accurately determine the distance between the stars and us.  , predict when a solar eclipse will occur, when a lunar eclipse will occur, and even if you become a strong person in the extraordinary realm in the future, you can also use this knowledge to calculate the best trajectory for sailing between different planets. " Yunyang first described.  A piece of paper came outHere comes the big cake.  Sure enough, just as Yunyang thought, at this moment, a look similar to madness appeared on the faces of the students sitting below.  "Our journey is the sea of ??stars Although we were born on the ancestral star, we don't want the ancestral star to limit our steps" "We will continue to become stronger and include this starry sky into our domain!" Yunyang  He nodded happily.  From this group of students, Yunyang saw the spirit of the entire Shenghua City, which was self-improvement, self-confidence and perseverance.  Yunyang is sure that every student here firmly believes that he will eventually become a master of the Transcendent Realm and is constantly striving for this goal.  Probably because of this, these students are so crazy about astronomical knowledge.  "Okay. Then I will teach you this first lesson today. In this first lesson, you need to understand the following graphics, recognize some wonderful laws contained in these graphics, and master some nouns  ¡­¡± Just like giving lectures to the group of old men in the Star Gazing Pavilion, Yunyang also chose to start from the most basic places at this moment, such as triangles, circles, parallel lines, and some angles.  relation.  Most of the ancient astronomers also served as mathematicians, and astronomy has had an indissoluble bond with mathematics from the very beginning.  It is impossible to study astronomy without mathematical knowledge.  The shapes drawn by Yunyang are very simple, but they are also very scary.  Think about it, in the history of Yunyang's previous world, Greek astronomers in BC calculated the radius of the earth based on the simple relationship between the central angle and arc length. Even Yunyang's method of measuring the radius of the earth at this moment  , in the final analysis, we are picking up the wisdom of that great ancient astronomer.  What¡¯s even more frightening is that ancient astronomers used these simple geometric knowledge to calculate the distance between the earth and the moon and the distance between the sun and the earth.  The wisdom contained in this made later generations of Yunyang amazed.  Although the final data have large errors, there is a very important point. Those errors are all due to observation errors. In other words, the theory is completely correct, but the ancients did not have a way to collect the initial data well.  , so the error is caused.  For example, modern humans can easily measure the straight-line distance between two places and whether they are on the same longitude or latitude. They can also use instruments to easily determine an angle even one thousandth of a degree, but the ancients had no way.  Do this.  The ancients could only determine whether two places were on the same meridian through a rough method such as whether they were due south and due north, and then use the camel's footsteps to measure the straight-line distance between the two places.  But even with such crude conditions, the ancient Greek astronomer Eratosthenes still measured the radius of the Earth, with an error of only a few hundred kilometers.  This is the terrifying power contained in these simple graphics.  But it was obvious that the students sitting in front of Yunyang were unable to feel the terrifying power from these simple graphics.  After Yunyang drew a straight line, a circle, and a right triangle, the students were a little confused.  "Astronomy does it have anything to do with these things?" "Isn't it just a line, a circle and a triangle" Yunyang smiled faintly.  "Everyone thinks that these three shapes are very simple, rightStudents who think they are familiar with these shapes, please raise your hands." A large number of palms were raised.  Yunyang randomly found a student and asked: "Assume that the central angle of this circle is 30 degrees and the corresponding arc length is one meter. How do you deduce the radius of this circle?" The student was speechless and said no.  After speaking for a while, he said: "Uncle Yun, I can't do it. But, what does these things have to do with astronomy?" "What does it have to do with astronomy?" Yun Yang smiled and said, "I think everyone already knows this.  Now, Dean Feng and General Sun are already following my method to measure the radius of the ancestral star. I can tell you that the method I use is this simple circle and a central angle.  Now that you have mastered this circle, it is not impossible to measure the size of the ancestral star by yourself Even measuring the distance from the sun to the ancestral star is easy. " "I can't tell you this method yet.  On the second day after the summer solstice, at the worship ceremony of Brother Zhang Yue, I will announce the measured data and application methods to everyone. But before that, if anyone can find out from this circle.  As for the method I use, it¡¯s up to me. You can make any request to Senior Brother.¡± ¡°Wow!¡± The students were instantly excited.  Who is Zhao Ke?  He was the number one master in Shenghua City under his master, and his cultivation was unfathomable. Anyone who dared to carry a sword to kill Zhongtian Temple alone could ask Zhao??Just a random request?  This a** is really too big.  Suddenly, that simple circle became mysterious in the eyes of these students.  ¡ª¡ª¡ª¡ª¡ª¡ª¡ª¡ª¡ª¡ª¡ª¡ª That¡¯s it for today.  .  .  I¡¯ve lived in Hainan enough. I¡¯m about to go to Guangzhou and Foshan. I¡¯m so busy that I can¡¯t write down the words. Please forgive me.  Alsoplease vote for recommendation!
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