Chapter 840 Small-scale scientific knowledge of Chang'an on August 16 of the tenth year of Zhenguan
Chapter 840 Chang’an Small-scale Scientific Knowledge Popularization Seminar on August 16, the 10th Year of Zhenguan (Please subscribe)
Cheng Chubi glanced at the five people in front of him, raised his chin towards Deng Chengxin and said, "Go and get a pot of water."
After a short while, a pot of water was brought over, and Cheng Chubi began to pour water into the thin-necked porcelain bottle.
And those small wooden sticks that seemed to be very slender actually did not break even when the narrow-necked porcelain bottle was filled with water.
The porcelain bottle was still hanging in the air, motionless. Li Ke stared at this scene blankly, and murmured after a long time.
"This, this is simply impossible. This must be some kind of magic. Otherwise, there is something wrong with your sticks..."
After hearing this guy's superstitious statement, Cheng Chubi couldn't help but roll his eyes.
He picked up the porcelain bottle filled with water and handed one of the wooden sticks to Li Ke.
Li Ke took the thin wooden stick and exerted a little force. With a click, the wooden stick broke directly...
"How about letting me give it a try?" Shangguan Yi couldn't help but asked with itchy hands.
Shangguan Yi has a good memory and remembered Deng's satisfactory operation steps just now. In a short time, he also completed the feat of hanging a porcelain bottle full of water from three small wooden sticks.
"This, this is physics?" Li Ke shook his head in disbelief, feeling that the picture in front of him simply refreshed his understanding.
"Yes, this is mechanics in physics. Many forces acting on the same object are called force systems."
“The object maintains a state of equilibrium under the action of a force system, and this force is called a balanced force system.
To put it simply, these three seemingly fragile little wooden sticks rely on the application of mechanics..."
"The stretched rope gives the second wooden stick enough squeezing force to ensure the friction between the rope and the wooden stick, and the three wooden sticks form a stable triangular structure.
And it has reached a state of force balance, so as long as you find the stress point correctly, you can easily lift the porcelain bottle filled with water."
"It involves a lot of physics knowledge, so I don't need to explain it anymore. The main reason is that it will be more complicated for you."
Cheng Chubi's words made all the talented people in the imperial examination and even Li Ke look unhappy, but they couldn't say anything to refute.
"Let me give you the simplest example again. Let's take the tea soup in our tea bowl. Its main component is water, and water has three physical forms."
“One is in a liquid state, like tea soup that we can drink, and the other is in a gaseous state.
You must have seen the rising white air above the hot tea soup. You only need to hold your hand slightly to cover it, and the water vapor will condense on your hands."
"There is also the ice and snow we see in winter, which is another physical form of water, called solid state."
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"How dare you ask Cheng Taichang, what is chemistry?" Xin Mao looked at the next subject, which was the word chemistry.
"Chemistry may be a bit abstract for you, so I will give you two simple examples.
One is combustion. What wood will produce when burning is light and heat. This is a chemical reaction.
Also, do you know what the soap I gave you is made of?"
"Fat is used. If fat is to be turned into soap, it needs to be soaped, and saponification is also a chemical application."
Cheng Chubi talked there and gave vivid examples, which allowed these imperial examination talents and Li Ke to have a rough understanding of the differences between various disciplines such as chemistry, physics, and nature.
But after hearing this, Li Ke couldn't help but raise his own questions.
"What's the use of learning these things?"
"Haha... Brother Xian, you are very knowledgeable in this question. I will tell you this, the house we live in.
Whether it can be strong and reliable enough involves the principles of physics."
"Also, do you still remember the printing machine that I built for my brother?
It involves a lot of physical principles, which can far exceed the efficiency of human printing."
"As for chemistry, it's even simpler. Without soap, how could you be so white and fragrant? And why do metals rust? This is also a chemical reaction..."
"In addition, mathematics is the basis of all this. Whether we are doing business or building buildings, we must use it."
"To take the simplest example, the range of our Tang Dynasty's bows and arrows and ballistae can also be calculated using physics and mathematics."
Cheng Chubi was eloquent and flamboyant, showing off his talents. Naturally, this was due to his background in medicine.
At that time, it was because my strength was in science and my foundation in liberal arts was somewhat poor, so I was unable to study Chinese medicine.
However, this made Cheng Chubi proficient in modern medical skills, and at least he did not fall behind in mathematics and physics.
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On the afternoon of August 16, the Mid-Autumn Festival in the tenth year of Zhenguan, Cheng Chubi and several young talents and Wu Wang Li Ke.
A small-scale scientific knowledge popularization seminar was held in the small courtyard of Lu Guogong's mansion.
At the meeting, Cheng Chubi, an outstanding talent of the Tang Dynasty who was extremely knowledgeable, used a lively teaching method.
Let them understand that their level of knowledge is nothing compared to Cheng Taichang.
Importantly, Cheng Chubi also linked the application of various disciplines to daily production and life.
Let them understand how helpful these subjects are to daily production and life.
It sounded like they had a feeling that they had seen through him and thoroughly understood how powerful he was.
In the end, you realize that your understanding of him before coming here was so superficial and one-sided.
The five people were sitting in the room blankly, and at this moment, Cheng Chubi stood with his back to the door, spitting in high spirits.
The evening sun shined through the wide-open door and onto Cheng Chubi's back.
The five of them seemed to see a sage bathing in the sun, with golden brilliance exuding all over his body...
It turns out that everything in the world, when it comes to Cheng Chubi's words, will become something that can be explained logically.
It seems to have opened a new door for them, allowing them to understand the many things they have seen, witnessed, and even used.
There are many scientific principles contained in them, but most people are just groping and trying.
But they have never considered the truth behind things.
"Just like the clothes we wear, whether it is silk thread or cotton or linen, each thread needs to have a thick diameter.
Only then can it be woven into a piece of silk that is strong and durable, or smooth and light.
This knowledge can be used to solve problems..."
Li Ke looked at Cheng Chubi blankly, and found with some sadness that Brother Chubi's knowledge reserve could be described as the capacity of a car.