Big physics class.
Wu Lei sat next to Li Chenguang, playing with the switch and stuffing biscuits, potato chips, chocolate, cakes, shaqima, gummy candies, etc. into his mouth from time to time. As a fat man, he insists on not stopping his mouth during class.
Li Chenguang was sitting next to him, lying on the table with his hands folded, looking at the blackboard with a helpless look.
Li Kairong, a well-known professor in the Department of Physics who is nearly 70 years old and has white hair, is talking eloquently on the lecture table.
Wu Lei ate for a while, then turned to look at Li Chenguang, "Why don't you play games? Don't you have a switch? I still want to connect with you."
"...I forgot to bring it."
"Then how about playing the king?"
"You go ahead and play, I don't really want to play today."
"What's wrong with you? People who don't know would think you're broken up in love."
Wu Lei said, stopped the fat palm holding the biscuits, paused and said, "You can't really be heartbroken, right?"
"What love is lost? Where can I lose love? I am, I am..."
Li Chenguang didn't know what was going on.
"By the way, didn't you like the class beauty of Class 6 in high school? What happened next?"
"How about what?"
"How are you two? Didn't you do anything?"
"I already like her, what else do you want from me? You don't want me to go up and be humiliated by her."
"...What you said makes sense."
Li Chenguang deeply agreed.
Wu Lei said while chewing biscuits, "As long as I don't have contact with her, I will always like her. If I have contact with her, I'm afraid I won't be able to continue to like her. Women are really troublesome in some aspects."
"..."
Sometimes, you don't understand why this person who has never spoken a few words to a girl can express such emotion.
Li Kairong said in a slightly old voice on the podium, "Today I will tell you about dimensions. We all know that countless points form a line, that is one dimension, and countless lines form a surface, that is Two dimensions, and composed of countless faces, is the three-dimensional space.”
"Any dimension is a dimensionality reduction blow for low-dimensional creatures. For example, an ant living in one dimension can only move left and right. When two ants meet, they cannot go around because they have no up and down. concept, but two-dimensional creatures have up and down, and ants can go around it from up and down."
"And suppose there is a swarm of ants living on a two-dimensional plane, a target, and now here comes a sharpshooter."
"The marksman's marksmanship is superb. When the bullet hits a flat target, every two bullet holes are exactly 10 centimeters apart. Scientists among the ants living on the target will find that there is an "objective law" in the universe. ", there will be a 'space hole' every 10 centimeters, so they spent a lot of manpower, material and financial resources, and based on observation and research, they deduced perfect theorems and formulas to fit this law, and evolved into a discipline. Yes, our current physics.”
"Physics is a magical thing. It may be the law of the world, or it may be just based on the improvisation of a sharpshooter. A large number of scientists have spent their whole lives unable to find out the essential reason for the formation of the 'space loophole'. We can only base it on this Research."
Then, a classmate asked.
"Teacher, so the physics of our three-dimensional creatures is probably an interest of four-dimensional creatures? The speed of light, the speed of sound waves, and the gravity of the earth are all fake?"
Li Kairong nodded, "Even if we think the sun rises from the east, we regard this as truth through observation, because it rises like this every day, every month, and every year. In fact, it rises like this every day, every month, and every year." Yes, this may just be the marksman's superb skills."
Li Chenguang lay on the table and looked at Professor Li Kairong on the podium, "In other words, this professor's lectures are quite lively."
"Of course, I heard that he is a big figure hired by the school with a lot of money. He is an academician of the Chinese Academy of Sciences."
"It's amazing. It's the first time I have the urge to take a class."
"Don't listen. Come on, king. I'll accompany you."
"..."
Another student asked, "Teacher, do you mean that there are still four-dimensional creatures?"
"I have no idea."
Li Kairong said in his unique and elegant voice, "Just like two-dimensional bull's-eye creatures cannot see three-dimensional creatures, three-dimensional creatures cannot see four-dimensional creatures, just like there is huge dark matter in the universe, dark matter Energy, and what our five human senses can feel is only four percent of the matter in the universe."
"Even if we are sitting here now, there may be a large amount of dark matter like meteorites, and dark energy penetrates our bodies, but we can't feel it."
Then, some students sighed.
"Large meteorite."
"Zi Zin Zhen."
"It sounds even more exciting to penetrate my body."
"Then when will our human technology develop to the point where we can recognize four-dimensional creatures?"
"It's difficult. Moreover, we don't know whether there are four-dimensional creatures. There is a common saying in the scientific community that if there are four-dimensional creatures, then whether we can recognize four-dimensional creatures does not depend on our technology. and progress, but depends on whether they are willing to let us know.”
Li Kairong said, throwing a question to everyone, "Everyone knows that compared with two-dimensional creatures, we have increased the height on the plane. So, what is another name for us three-dimensional creatures?"
Then Tao Xue, the league secretary sitting in the front row, raised her hands high.
Li Kairong pointed at her and said, "Let's talk about this classmate."
Tao Xue stood up happily, "We are space creatures, which refers to three-dimensional creatures living in space. We can swim freely in space."
"Yes, three-dimensional creatures are also called space creatures."
Li Kairong looked at her kindly, "So a four-dimensional creature, which adds another dimension to space, do you know what it is called?"
Tao Xue thought for a while, "...Add another dimension to space?"
"what is that?"
She frowned and thought for a while, then shook her head.
Four dimensions?
She couldn't figure it out.
Li Kairong motioned for her to sit down.
"Did any classmates think of it?"
There were students in the audience whispering, but no one stood up to answer. If we want to add another dimension to the three dimensions, how should we add it? Doesn’t it have length, width and height?
Then Li Chenguang raised his hand in a rare move.
Li Kairong pointed to Li Chenguang, who was sitting in the third row from the back of the second row, "Let this classmate tell me."
Li Chenguang stood up, "Did it increase the dimension of time?"
Li Kairong smiled and said, "That's right. This classmate is very smart. Einstein once proposed that if the creatures in the third dimension are space creatures, the creatures in the fourth dimension are time creatures, and the things above are beyond our imagination. That’s it.”
Wu Lei looked at Li Chenguang in surprise, "You are so smart, you actually raised your hand to answer questions in class."
According to their usual habits, they should bury their heads low like rats in the ditch, for fear of being called.
Li Chenguang replied weakly, "It's boring."
"There's something wrong with you."
The students started talking again, "Time creatures?"
"Travel through time."
"Can they move around in time?"
"That's terrible."
"Isn't that time a mess?"
"..."
There was an uproar below.
Others joked, "Then how do they spend time? For example, the world of four-dimensional creatures also sells Mark Six lottery numbers. If the Mark Six lottery numbers are released today, they can jump to yesterday and buy today's winning numbers. Everyone will be a millionaire."
Suddenly there was laughter again.
"Besides, if they can travel through time, wouldn't they be able to die? If I die today, I can travel to ten years ago."
Li Kairong listened to the heated discussion of the students below and just smiled. When everyone finished the discussion and the whole place became quieter, he continued, "Two-dimensional creatures cannot see three dimensions, and three-dimensional creatures cannot see four dimensions." , everything we do is based on conjecture.”
"Think about it, everyone, we are space creatures, but can we travel through space infinitely? You can walk from home to school, you can take a spaceship from the earth to the moon, but can you sit on Neptune? Even if you go to Neptune, can you Can you leave the solar system? Even if you leave the solar system, can you leave the Milky Way?"
Then some students said, "That's because we can't live that long. It would be okay if we were given unlimited lifespan."
Li Kairong smiled and said, "The farthest star that has been observed so far is 12.8 billion light-years away from us. Even if you have an infinite lifespan to catch up, why do you think the universe will not expand and move away from you at a faster speed? "
"..."
This time, everyone was silent again.
"What cannot be done is that even if we are three-dimensional space creatures, we cannot travel infinitely in space. We need to consume costs, manpower, material resources, and time. Even if science develops further, human life spans are extended, and aircraft speeds are faster, we We can only infinitely extend the physical distance we can travel to explore as much as one percent of the space, and there is no way to go back and forth."
"Similarly, the current mainstream view is that four-dimensional creatures, that is, four-dimensional time creatures, can move on the coordinate axis of time to travel through time, but they also have to pay a price, and they cannot travel infinitely. As for what the price is, currently There’s no way to know.”
Someone asked, "Then what is their history like? Isn't it a mess?"
"It is impossible to imagine that there should be a special force or special rules that will counteract and correct this, just like in an ecosystem, if the number of plants, animals and microorganisms is maintained at a certain level and does not change much , this state is called ecological balance. The ecological balance can be destroyed, just like when we prey on eagles in large numbers, rabbits will reproduce indefinitely, but the ecology will not allow an object to become unbalanced. It will use the power of balance to adjust itself, such as diseases. , plagues, such as new natural enemies, use a force similar to rules to adjust dynamic balance. If there is such a balance in space, then there should also be it in time."
Someone else asked, "Teacher, if there really are four-dimensional creatures, will he suddenly want to deal with us one day?"
"It's almost like whether you want to crush the ants passing by."
Li Chenguang was listening to the class, and Wu Lei directly put the switch into Li Chenguang's hand.
Excitedly, he picked up the mobile phone in the drawer and said, "You play first, a girl will ask me to play the king."
Li Chenguang immediately came over and said, "Who is it? I don't know about the girl you've just hooked up with. Your level as a king is average. Do you want me to take her with you?"
"Go on your way."
Wu Lei looked disgusted, "There are no ships here that can carry you. The new era is waving to me, la la la~~ I feel like the girls in college are much kinder than in high school, and they won't whip you at every turn. .”
"Really? Why do I think it's even more difficult?"
Li Chenguang glanced at the note name on the chat box of his mobile phone, "Su Tingting!"
The devil whispered, "Believe me, women are a disaster. The more beautiful a woman is, the more she will hurt you."
"so what?"
"Push it to me, I'm not afraid of getting hurt."
"go away."
…
…
After Yin Ruosheng finished class, she quickly walked out of the door when she saw Yin Feng opposite, and Yin Feng waved to her.
Yin Ruosheng walked up holding the textbook and said with a smile, "What a coincidence."
"Unfortunately, I'm waiting for you."
Yin Feng wore a calm smile and said, "Just in time to talk about tomorrow's sports meeting."
"this……"
Yin Ruosheng is a clerk in the secretarial department. If we want to talk about serious matters, we can't talk to her.
I have never seen a big boss talk directly to a junior minion. There is also a secretary and deputy minister between the two of them.
If you have anything to do, you should talk to them first, and then they can convey it to you.
Everyone knows some things.
but.
Yin Ruosheng smiled dryly and said, "Not today, I have an appointment."
Yin Feng showed a bit of regret, "Is that so? That's really a pity."
"Next time."
Yin Ruosheng smiled and said, "Actually, just make a phone call. You don't have to go all the way to wait for me."
Because she found that all the boys and girls passing by had their eyes on her.
Whispering there.
"That man is so handsome, my God."
"He's so handsome that he's earth-shattering. He's so handsome that he's miserable. Who is that?"
"Idiot, we don't even know our student council president. Haven't we spoken on stage before?"
"Maybe I'm playing with my phone. He is indeed the most handsome guy in Jiangnan."
"Look, look, it's our school beauty and student council president."
"It's a perfect match, this couple."
"As expected of our college beauty."
"..."
After the crowded class, the two of them stood aside and seemed to be actors in the spotlight, outshining the people around them and becoming the focus of the crowd.
Yin Feng smiled, "Many things have to be said face to face to be effective, otherwise it would be too insincere."
Yin Ruosheng smiled dryly and said, "This kind of thing is not that serious. I'm just worried that your trip will be in vain."
"Then in order to prevent my trip from going in vain, let's go for a walk together?"
"oh."
Yin Ruosheng subconsciously agreed, but then she remembered that she had other important things to do, and quickly shook her head and said, "Not today, I'm in a hurry. I'm really sorry. I won't be able to catch up if I'm later. I have to go."
"Oh well."
Yin Ruosheng said again, "Bye", and didn't care to say anything more, so he hurriedly left with a pair of long legs, leaving Yin Feng alone, and looked at Yin Ruosheng for a while. The graceful figure left, a complex look flashed in her eyes, and then she also left.
As soon as Yin Ruosheng left Jiangnan University, he hurried to the nearby Polytechnic University.
She came out quite early. She checked online and found that the course was half an hour earlier than his mathematics and computer department. Although she was delayed by Yin Feng, she should still be able to catch up...
I know what everyone is going to say, and soon you will see the effects...
(End of chapter)
