Chapter 247 Leading to the Study of Objects
Going outside a few classrooms, Li Niandao said: "This is where everyone takes music classes and painting classes. There are no rigid assessment requirements for these two courses, but if If you can learn it well, it will be beneficial. ”
The painting class was added later by Li Nian to strengthen students’ drawing and mapping abilities.
They will need drawings to join Da Qin's industrial construction in the future. Even if they do not become Da Qin's industrial builders, go to the battlefield or become navigators, drawings are still very useful.
Like sailing on the sea, if you encounter unknown plants and animals and you don’t have a camera, you have to draw and record them yourself.
Li Nian pointed to several other classrooms, "That's where you will take some classes on studying things in the future. In studying things, you don't just look at something and figure out the reason behind it, but you have to observe and even operate it yourself." Only then can we understand its principles, its causes, and its uses. "
"Like bamboo, if you sit there on a chair and stare at the bamboo, you will know why it grows from a bamboo shoot to a bamboo. Why is it this shape and structure? ?”
Li Nian looked at the students and saw them shaking their heads, and then said: “So I need to grow the bamboo myself, cut it up, and use a tool to observe its details. Question, do you think bamboo is grass or tree? "
This question... the students, including the accompanying teachers, thought about it. From their ordinary feelings, bamboo is obviously a tree. How could it be possible? Could it be grass?
But since this person asked this, it is definitely not the answer they thought. But it is too unbelievable that bamboo is a kind of grass, and it subverts their common sense over the years.
Li Nian didn't wait for their answer, and said to himself: "As for whether bamboo is a tree or grass, based on your normal feelings, you will subconsciously think it is a tree. After all, in your opinion, grass should not grow very high, but bamboo does not." It can grow tall and strong. If classified according to growing tall and strong, bamboo can indeed be classified as a tree. ”
“ But if you look deeply into the habits and structure of bamboo, you will find that it is more similar to grass and should be classified as grass."
"I tell you this question in the hope that you will learn more in the future. Don't take your daily feelings and experiences into consideration and take it for granted. The world is constantly changing and moving. Knowledge should continue to change in order to be more accurate and not stick to the past."
After thinking about it, an older student who was obviously from a noble family bowed to Li Nian and asked: " If it is true as Young Master said, the world is constantly changing and moving, and knowledge should also continue to change with it. , doesn’t it mean that what we learn today will be useless for tomorrow, and what we learn tomorrow will be useless for the future?”
“If we go on like this, what is the meaning of what we learn today, and how can we find the accurate answer? Knowledge? It’s all changing anyway, and it’s never possible to find the most accurate truth.”
Li Niandao: "That's a good question, but movement and change are properties of the world. To find the accurate truth, we need to understand the causes of movement changes."
"But this process is extremely difficult and time-consuming. There is a lot of time, so we can only get closer to the accurate truth step by step, but we cannot Arrive directly.”
“Therefore, there will be fallacies and errors in this process, that is, what is learned today and is considered correct will be found to be incomplete after new discoveries are made tomorrow. Correct, it should be corrected and improved, so that it can be closer to the most accurate truth step by step. ”
“So your statement that ‘what we learn today is useless for tomorrow, and what we learn tomorrow will be useless for the future’ is really wrong. What we learn today may indeed be considered a fallacy tomorrow. , abandoned, but it is our ladder to the correct principle. ”
"If there is no mistake today, how can we be right tomorrow?" These words did not make many students think, but they made Zhuang Huang, Li Shiqi and others who accompanied them think a lot. They first thought of the theory they had learned. , do these also need to be gradually revised as the world changes, in order to reach the most perfect and accurate state?
Being able to learn a lot from Li Nian was the main reason why Zhuang Huang, Li Shiqi and others were willing to stay with Li Nian and be appointed as their teachers by Li Nian.
Li Nian added: "But there are things that remain unchanged in the world. For example, we are all citizens of the Qin Dynasty, and our ancestors are Yanhuang. This is the inheritance of the spirit of civilization. Everyone, please remember this.”
The student saluted Li Nian and said, “Thank you. Master, let’s clear up the doubts!”
Leaving the teaching area and arriving at the cafeteria, which was modeled on later school cafeterias, Li Niandao said: “This is the cafeteria, where three meals a day are served, breakfast, lunch, and dinner. You need to prepare your own meals here.”
A group of students saw that there were many tables and chairs set up in the cafeteria, but they were all long tables and benches. It was obvious at a glance that several people could sit together. There were also some characters they did not recognize painted on the walls and pillars of the cafeteria, and there were words written on them. Marked with strange symbols.
The characters should be the new characters this person mentioned, and the symbols should be the "Pinyin" that is rumored to allow people to quickly read. But what is written?
What is actually written is "One porridge and one meal, when you think about the hard place; half a thread, half a strand, constantly thinking about the material resources." Chinese food, every grain of it is hard work” and the like.
Just when Li Nian was about to take the students to visit the dormitory where they lived, a guard came to report: "Young Master, you are ready!"
Li Nian nodded. , rushed to the students watching in the cafeteria and said: "Everyone, please follow me to see something interesting."
What's ready, what's fun?
With curiosity and confusion, the students returned to the playground under the leadership of Li Nian, but now there were some other people and horses on the playground.
I saw four hemispheric shells placed on the ground in the center. Someone was playing with these spherical shells. When Li Nian arrived, those people saluted.
After Li Nian nodded in return, he pointed to the spherical shell and said to the students: "These four hemispheres can be put together to form two balls. You can go over and have a look. It doesn't hurt to touch them. Something unexpected will happen later. ”
After listening to Li Nian's words, some interested students walked over and took a look. The four hemispheric shells were all made of copper. There were several buttons on the surface of the spherical shell, and there was a layer of unknown material in the middle of the spherical shell. The finished thing feels nothing special, just an ordinary hollow copper ball.
But someone next to them asked them to put the spherical shells together to see if they could be separated. Could it be that after these hemispheric shells were put together, they still couldn't be separated?
However, after the students put the spherical shells together, they easily separated them again. This made the students who tried it very puzzled. There is nothing special. Can they be separated?
But the people next to me just smiled and said nothing.
This is a replica of the famous Magdeburg hemisphere experiment. The purpose is to open the eyes of today's students entering school, let them know that the world is big and magical, and stimulate their interest in studying objects!
Of course, in this world, there should be no Magdeburg Hemisphere Experiment, replaced by the Six-English Palace Hemisphere Experiment.
(End of this chapter)