Rising: Ten Thousand Years Chapter 98: : class
After that night, the Kyushu Academy of Sciences returned to calm.
It's winter, but my heart is hot.
The steam whimpered continuously.
The steam engine improved by the latest technology is criss-crossing the Kyushu Academy of Sciences. Qi Lian is driving, and Li Zhen is sitting in the carriage, not cold at all.
There are burning flames and boilers under your feet, and it is even a little stuffy.
"The School of Physics is here."
Li Zhen nodded, put the leather hat on his head, and tightened the collar of his clothes. Then he got out of the car with a few books in his arms.
"Stupid Qi, go and have fun first, this class lasts about an hour. Come back and pick me up according to the time."
Lengzi Qi nodded: "Go quickly."
Li Zhen walked into the auditorium of the School of Physics. But Qi Lengzi didn't go anywhere, he was nestled in the steam car and read a book seriously.
Since the establishment of the Kyushu Academy of Sciences, Qi Lengzi also felt that it was time for him to become a cultural person. He learned by himself, starting from the recognition of characters. Afraid of being seen by others in this high-end university, he, a follower of Li Zhen, laughed at himself for learning how to read. So Qi Lengzi is secretly studying.
Now I have learned the 99 multiplication table...
"Mr. Li."
The auditorium was overcrowded, and all the more than one hundred seats were already filled. Sitting in the first row were the first batch of personnel from Kyushu Institute of Physics, Liu Jinghong and others.
And at the back, all those sitting were those who later joined the Kyushu Institute of Physics. Among them are those from Fuxing University, and even those from Imperial College of Technology. There are also many folk intellectuals.
There are not enough seats, many people are sitting in the corridor, sitting on the ground. There are many people standing behind.
All of them came to listen to Li Chen's class.
Everyone cherishes the time when Li Chen lectures, even if it is an urgent matter, they must come to listen to Li Chen's lecture.
Li Zhen looked at it with a glance, everyone stood up and saluted him, and there was no uneasiness in their hearts. Although not all of these people are teenagers, there are also many middle-aged people, as well as elderly intellectuals with a lot of white beards.
I have taken many classes and I am used to it.
Li Zhen nodded and put the book on the desk: "Sit down."
Flipping through the books he wrote, which are currently only circulated within the Kyushu Academy of Sciences, Li Zhen said, "Where did you talk about it last time?"
Liu Jinghong stood up and shouted: "Today it's time to talk about mechanical movement."
A middle-aged man wearing glasses stood up and shouted: "Why? It's time to talk about electromagnetism today."
"Mechanical motion."
"Kyushu Institute of Physics is now mainly studying mechanical motion, let's talk about electromagnetism later."
"Why, we are interested in electromagnetism."
“…”
Li Zhen smiled and pressed his hand: "There are differences in the physics academy. Some people like to study electricity, and some people want to study mechanics. This is a good thing, each has its own favorite and good field. And In fact, physics is also a very complex subject, and not all phenomena can be understood by one person. Han Xian."
Fang Hanxian stood up: "Mr. Li?"
"Han Xian, you are the vice president of the School of Physics, you can debug it. There should be a branch in the School of Physics, and count what everyone is good at. The categories should be separated. Different majors are elective and compulsory. Many people are now If you are interested in electromagnetism, how about this, the Kyushu Institute of Physics is under the jurisdiction, and a branch of 'Electromagnetism' is being established."
Fang Hanxian was excited: "Yes."
In the auditorium, everyone was ecstatic. We're going to study separately, that's good. There is more to learn.
"Today we will talk about the first law of motion."
The first law of motion, the full name should be Newton's first law of motion. But when Li Chen was writing the textbook, he suddenly became shocked. He didn't even know who Newton was. It seemed that someone had entrusted him with this law. Having said that, Newton seems to be a great man from ancient times.
But... I can't remember who told me this. In contemporary times, no one has heard of Newton.
Therefore, in the textbook, Li Chen compiled this academic term as "the first law of motion", and canceled the name of the person.
"What is the first law of motion?"
Sitting in the front row, Qin Enze asked with a bong in his mouth, taking a deep puff.
Qin Enze smoked a gun in class, but no one said anything about him. Everyone knows Qin Enze's experience. He was severely burned and used opium to relieve pain.
You can't say he didn't become addicted during that time. But Qin Enze can suppress this addiction now.
When I became addicted, I went to take a hot bath. In normal times, tobacco leaves are used to replace this sense of emptiness. Slowly, with the addiction to smoking, he became a heavy smoker at a young age. The bong was hardly out of his hand.
But no one resented him.
Li Zhen fanned the drifting smoke with his hand, wrote the words "First Law of Motion" on the blackboard, and said:
"The first law of motion, also known as the law of inertia, the law of inertia. Any object must maintain a uniform linear motion, or a static state, until an external force forces it to change its state of motion. This is the first law of motion. "
Li Chen drew a few images on the blackboard, and then he talked eloquently: "To understand the first law, we need to understand something called frictional resistance. Everyone understands frictional resistance, right? This book is now on this desk, I'm going to tilt the desk now, what happened?"
A girl stood up quickly: "Because the tilt angle is not large enough, and the influence of gravity and gravity is not strong enough, the book does not move. Now the book is still."
Li Zhen nodded: "It also has something to do with these. But the most important thing is that the surface of the book touches the surface of the desk too much, too large, so the frictional resistance increases. If I am under this book, What will happen if you add a few round wheels?"
The girl said again: "If more wheels are added below, then the book will slide down when the inclination angle is the same."
"Yes, this is friction. Now that we understand friction, let's talk about inertia and inertia. When a ball rolls down an incline, its speed increases. Rolling up an incline , its speed will decrease. If the ball rolls along a horizontal plane, its speed will not increase or decrease. But in fact, the ball will become slower and slower, and finally stop. Why?"
The auditorium was engulfed in discussions.
"Yeah, why is that?"
"Yes, I definitely know this truth. A ball rolling towards the horizontal plane will definitely stop in the end. But why?"
"Hey... why didn't I think that this common sense in life, I, a senior intellectual, can't explain why."
“…”
Someone timidly raised his hand and said, "Because it has no follow-up power?"
Li Zhen shook his head ~IndoMTL.com~ knocked on the blackboard and said: "After excluding the factors of continuous power, the smoother the surface of the ball, the farther the ball will roll. This is another Why?"
Liu Jinghong suddenly exclaimed: "Then is this just friction? Is it because of friction? That's not right, the ball is rolling forward, and the rolling forward is in the form of a wheel. How can there be friction?"
Li Zhen said: "As long as two objects are in contact and moving, no matter what shape they are, there will be friction. What Jinghong said is right, it is because of friction. When a ball rolls, if the surface is not smooth enough , the distance it rolls is not smooth. So it can be inferred from this, if there is no friction, will the ball keep rolling?"
“…”
"... force is not what maintains the motion of a body, i.e. maintains its velocity, but precisely what changes its state of motion, i.e. changes its velocity. Therefore, once a body has a certain velocity, if it is not subjected to a force, it will It will continue to move in a straight line at this speed."
"...and this is inertia, and inertia."
“…”
In the 'Shashasha' auditorium, everyone lowered their heads solemnly and took notes in their notebooks.
Li Zhen looked at the time and left with his book in his arms.
The students suddenly stood up collectively: "Thank you, Teacher Li."
After speaking, he continued to sit down and continued to take notes seriously.
After leaving the School of Physics, Li Zhen got on the steam car: "School of Chemistry."
After a while, the car arrived at the School of Chemistry.
Li Zhen walked into the auditorium of the School of Chemistry with his chemistry book under his arm. The auditorium was still overcrowded...
"Mr. Li."
“…”