Water Margin farming to become powerful

Chapter 310
When people in the Song Dynasty learned what inertia is, it was difficult for everyone to accept it at the first time.

No one has ever seen an object moving in a straight line at a constant speed by inertia in real life, and everyone subconsciously resists this concept.

Sun Xin introduced air resistance and friction to everyone logically, and told everyone that the rolling ball will stop because of friction. If there is no external force interference, it will always keep moving in a straight line at a constant speed.

Sun Xin told everyone that the feathers and copper coins placed at the same height would fall to the ground at the same time without air resistance. Everyone felt even more incredible. Although Sun Xin's words made sense, they just didn't want to believe them.

At this time, Sun Xin took out the second teaching aid he had prepared.

It was a translucent sealed bamboo tube.

Although Sun Xin will not be able to produce transparent glass for a while these days, but fortunately Dengzhou is located by the sea, and this place has always had the habit of using transparent materials since ancient times. It is inlaid on tiles after light transmission.

Using the same technique, Sun Xin spent a lot of money to make a bamboo tube inlaid with transparent clam shells. After sealing it, he put a piece of strong chicken feather and a copper coin inside.

Chicken feathers and copper coins are all dipped on the bamboo tube with wax, and finally the bamboo tube is filled with clean water, and the water is pumped out with a simple water pump with a one-way valve. After the water is emptied, the part connecting the one-way valve and the bamboo tube is tightly sealed The bamboo tube barely reached a vacuum.

At this time, slightly heat the inside of the bamboo tube outside to melt the wax, and the chicken feathers and copper coins can move in the bamboo tube.

Just making such a small vacuum prop that is common in middle schools of later generations cost Sun Xin two yuan of capital. Although the vacuum degree of the final product is not very good, it is enough for experiments.

When Sun Xin turned the bamboo tube over and everyone saw the copper coins and chicken feathers falling to the other end of the bamboo tube at the same speed, everyone opened their mouths.

Seeing that everyone likes this prop, Sun Xin asked the students to try it out in groups to make it worth the money.

This time, not only the young students came to the stage, but also Luan Tingyu and Lu Zhishen stepped onto the stage curiously, flipped the bamboo tube over and over with their own hands, watched the chicken feathers and copper coins fall to the other end of the bamboo tube at the same time, and then clicked their tongues in amazement.

At the end, even the instructor couldn't control the scene, and many students gathered around the podium to watch the bamboo tube turn over and over again.

If everyone had seen this magical little prop before, they would all have thought it was some kind of magic trick, but this time they followed Sun Xin's train of thought for a class, and everyone understood that this prop just explained the existence of inertia and air resistance.

And Luan Tingyu, who stood aside and looked at the copper coins and chicken feathers, also quickly thought of the importance of this physics. Today we are talking about a small ball rolling down a landslide. shells!
Thinking about the air friction force and force changing the direction of motion that Sun Xin mentioned, after a little thought, he knew why Sun Xin called for the artillery students to graduate with excellent grades in this physics class, and even suggested Those supervisors who are related to industry and the military in the supervisory committee have all come to this class?
Luan Tingyu had a feeling that this way of thinking, which they had never been exposed to before, was the foundation of why Sun Xin was able to build such a large foundation.

Before get out of class ended, Sun Xin directly wrote down a few quiz questions on the podium, and then called the students to stand up and answer.

Most people know that the opportunity to learn is not easy, not to mention that Sun Xin's lectures are so lively and interesting, so most people listened to this class, and the content of the lecture is not deep, so the few people who called it quickly disappeared. The answer came out.

Until Zhao Fa of the Artillery Squad was called up, he looked at Sun Xin in embarrassment as he tapped his hand on a question and asked for the answer.

Zhao Fa was stunned for a moment, and Sun Xin was shocked to find that this guy couldn't answer.

The smile on Sun Xin's face, which was originally full of smiles because the few questions just now were perfectly answered, also gradually froze.

This question couldn't be easier, he never thought that there would be some students who couldn't answer it...

I saw the obese Zhao Fa with a dull face, and a pretty-looking soldier beside him was also secretly pulling Zhao Fa's sleeve at this moment, telling him the answer in a low voice.

Sun Xin's complexion was not looking good anymore, then Zhao Fa suddenly raised his head and said loudly: "Master Sun Zhuang, I am Zhao De's nephew, and I was sent by Zhao Yuanwai."

Zhu Biao, who had been displeased with Zhao Fa for a long time, couldn't help being taken aback when he heard Zhao Fa's answer, wondering how Sun Xin would deal with such a powerful son like him.

At this moment, Lu Zhishen, who was sitting in front, turned dark.

He is the interim principal of the Supervisory Council University, and he hasn't been in charge of school affairs for a few days. He didn't expect his students to make him such a big embarrassment.

In Lu Zhishen's view, some students were unable to answer the questions in class, which was his great dereliction of duty.

Sun Xin didn't say much on the spot, and asked Zhao Fa to sit down, Zhao Fa didn't care.

After class, Sun Xin called Lu Zhishen and said, "Send me Zhao Fa's file."

Soon the manager and dormitory manager directly under Zhao Fa were called.

After some questioning, Lu Zhishen's face became even more ugly.

This Zhao Fa not only didn't listen to lectures in class, he was disorganized and disciplined in school, and even beat students and bullied his former parents in school.

Those students who were bullied by him were all studying at the industrial port, and thought that they might be sent back to work in the Dengzhou cotton mill in the future. Zhao De is the major shareholder of the Dengzhou battlefield, so they didn't dare to speak out when they were beaten. .

After listening to it, Lu Zhishen's forehead was already full of veins, and he looked at Sun Xin and asked him what he meant.

Sun Xin said directly: "Send a letter to Zhao De, his nephew has dropped out of school, and ask him to send a good one to the supervisory committee."

When Lu Zhishen went to inform Zhao Fa to drop out of school, Zhao Fa was stunned at first, then turned and left indifferently.

In his opinion, being a soldier of the supervisory committee is not a good job at all. He is so tired that he has to study every day. Why bother to be an official in the court?
If he really wanted to study, he would have been an official in Dengzhou Mansion with his family's assets.

Zhao Fa went directly back to the dormitory and asked the servant from Zi's family to pack up the package and go with him, but he didn't expect the servant who had been bossed around by him to say cautiously: "I was not expelled from school, Master Lu told me to continue attending classes at school."

Zhao Fa was stunned for a moment, then flew into a rage, and kicked him away.

The little servant didn't dare to resist and was kicked far away, but when she stood up again, she didn't walk towards Zhao Fa like she used to when she was a dog's leg, but silently wiped the footprints on her body and continued to pack the package.

Lu Zhishen told him that although he could still study in the Supervisory Board University, it was against the rules to change the dormitory privately, and he was asked to move back to the original dormitory.

This little guy was originally a long-term employee of the Zhao family for generations, and his parents are both dead. In the past, he could only earn a living by relying on Zhao Fa's subordinates, but now he has gradually realized that a poor family like himself is here The Protectorate is a better way out.

If Sun Xin did not drive Zhao Fa away, he would still be a little worried. Subconsciously, he would continue to be Zhao Fa's dog under the threat of Zhao Fa before, but now he found that Sun Xin had driven Zhao Fa away without saying a word. In a flash, the boy felt that he had more reason to stay in the Supervisory Council.

Whoever wants to take the position of Zhaojiazhuang's boy, he will spend his whole life in the protection army, even if he dies on the battlefield, he will be more comfortable than being a dog all his life.

What's more, he is smart. He clearly saw that Sun Xin spent so much energy on giving them lessons, and letting them train for free. This training of a soldier costs a lot of money. Is it so easy to be willing to let them Died in battle?

Zhao Fa left the Supervisory Committee University alone, no one helped him carry his luggage, and he didn't go home anyway. Anyway, with a lot of money on him, he stayed in Sunjiaji's inn for two days, eating, drinking and watching theaters every day. Zhao Fa didn't complain to Zhao Yuanwai until his uncle arrived at Sunjiazhuang

Zhao De was also a bit disheartened. Originally, to show his loyalty to Sun Xin, he sent his single males of several generations to study in Sun's Village as soon as he received the news of the university enrollment from the Supervisory Committee.

For him, sending his precious nephew here is already a great way to save face for Sun Xin, but he didn't expect Sun Xin to beat him back just like that.

Zhao De wanted to get angry, but he thought that all his current wealth had been handed over to the Sun Family Manor, and he didn't dare to offend Sun Xin, on the contrary, he wanted to apologize to Sun Xin by licking his face.

Sun Xin can naturally see moral displeasure, but he knows that his attitude must not be soft on this matter, otherwise the school will be in vain.

However, after this incident, the students in the University of the Supervisory Committee secretly took a higher look at Sun Xin in their hearts. Everyone saw Zhao Fa's actions, and thought that Sun Xin must have turned a blind eye. Now they finally understand that they are studying here because Sun Xin sincerely wants them to learn something, and it's not out of anyone's face.

If you don't really go to school, even if you are Zhao Yuanwai's nephew, Sun Xin will drive you away.

In this way, while the wealthy children like Zeng Sheng and Zhu Biao restrained themselves, those activists who were selected from the poor peasants, soldiers and low-level farmers even added a lot of pride to the identity of the college students. The atmosphere has improved a lot.

After two sessions of Sun Xin's physics class, he copied the handouts to his third apprentice, Jie Bao. This kid has a smart brain. He has been with Sun Xin for so many years, and he has already learned the basic knowledge of physics. He just got out of the construction of a new factory, and now he is settling accounts with Jiang Jingxue. In his spare time, he helps the master with lessons. Although he needs to work overtime, he dare not complain.

At the same time, a copy of the physics lecture notes was sent to all supervisors for unified study, and the exams were taken in class during the regular meeting.

Due to Sun Xin's request, the content taught in Sunjiazhuang University is only circulated internally for the time being. Although it is inevitable that it will spread, there are no real educated people for a while. I'm not interested in the stuff, but those who heard it probably thought it was some technical lectures by merchants, farmers and workers, and the Confucian scholars all scoffed at them and didn't even look at them.

(End of this chapter)