Daming: If I find a great-grandson, I will teach an emperor through the ages

Chapter 214 You are such a fucking genius!

As time went by, Cao Wei became more and more aware of the value of Xie Jin, the most talented person in Hongwu. He really found a treasure this time!

After learning that Xie Jin always wrote and solved problems in private, coupled with his outstanding theoretical thinking, Cao Wei gradually came into contact with Xie Jin more often.

Not only did Xie Jin go to Cao Mansion to open a small stove for him every day after the lecture, but he was also gradually regarded as a kind of second-in-command among the students in the manufacturing bureau, similar to the squad leader.

Cao Wei asked Xie Jin to take out the questions he had studied every day and let other students try to solve them. If they didn't understand something, they could ask Xie Jin directly.

The result of this trial was surprisingly good.

No one among the more than a hundred students was left behind. After being stumped by the problem, they all racked their brains to find a solution.

If I really couldn’t think of anything, I asked Xie Jin. After a month, everyone’s rational thinking has improved tremendously!

Later, Cao Wei simply asked Xie Jin to lead the others and continue to stay in the Foundry Bureau to study the difficult problems after he finished teaching.

Anyway, he only has half a day to teach, and there is still half a day free. These students are idle, so why not let them get together for some academic discussions.

Cao Wei dares to guarantee that the one hundred and forty students he is teaching now are undoubtedly the group of people with the highest mathematical ability, physical ability, and rational thinking in the world at this time!

Over time, these more than 100 people will spread the knowledge they have learned to all parts of the Ming Dynasty, driving the entire Ming Dynasty to further progress! Reaching heights that other countries can only dream of!

What Newton, what Einstein, what Tesla... they will all have the surname "Chinese" from now on!

Time passes day by day in the different busyness of everyone.

When Cao Wei announced that all the physics courses he taught were over, it was already the sixth year of Yongwu.

After mathematics and physics, there is also chemistry.

But the principles of chemistry are much more abstract than mathematics and physics. If you want to really understand the principles of chemistry, you must do some experiments to illustrate them.

Doing experiments requires money and money, that is, various chemical raw materials. However, where did the Ming Dynasty have so many chemical raw materials at this time?

Therefore, the chemistry course is destined not to be as in-depth as mathematics and physics, and it can take more than half a year.

According to Cao Wei's estimation, the chemistry course will only last for two months at most. Experiments must be done on chemical raw materials that are already available at this time or can be simply extracted, such as sodium extracted from table salt and sodium extracted from wall ash. The different shapes of the nitrate, formic acid extract, and gunpowder produce different explosion powers, etc.

In addition, Cao Wei will talk about some basic molecular structures of chemistry and conversion principles, and the course is almost over.

Another month and a half passed in the blink of an eye,

On this day, Cao Wei led a group of people to the ammunition production workshop of the firearms factory and asked the craftsmen for some different types of gunpowder, including gunpowder powder and granular gunpowder...

"Teacher," someone in the crowd raised his hand, "Why do gunpowder have to be made in different shapes? Aren't the ingredients the same and the function the same? It's just to burn, expand and explode..."

Cao Wei looked at the student named Yi Qiu and pinched a black gunpowder grain with a smile.

"There is naturally a reason why we go to the trouble of making gunpowder powder into granular form."

"I have said before that the combustion process requires oxygen. So think about it. The shape of gunpowder powder is so small. When packed together, the gaps between each other are also narrow. When it explodes, it is difficult to react with enough oxygen. , sufficient burning.”

"The granular gunpowder is different. The overall volume becomes larger, and the gaps between them also become larger. When burning, both the oxygen produced by the saltpeter and the oxygen in the air are enough for the gunpowder to fully burn, so this can Significantly increases the power of gunpowder explosions.”

"Furthermore, gunpowder is easily affected by moisture when stored in a powdery state, and is inconvenient to transport. The sulfur powder, saltpeter powder, and charcoal powder in different proportions and weights will separate during shaking, which will also affect the power of the gunpowder. At a huge discount, or not at all.”

"The technology of granulated gunpowder solves these problems. First of all, although granulated gunpowder will delaminate after bumpy transportation, larger particles will run to the bottom of the gunpowder barrel, while smaller particles will It reaches the surface of the gunpowder barrel, but this will not affect the quality and use of the gunpowder."

"Secondly, granulated gunpowder is also much less hygroscopic than powdered gunpowder because granular gunpowder has a smaller surface area to volume ratio and absorbs less moisture from the air."

"Now, when craftsmen are loading gunpowder for guns or cannonballs, it is impossible to carefully control the density of the gunpowder one by one. It is likely that the gunpowder will be packed very tightly or very loosely, which will also affect the explosive power of the gunpowder. .”

"Granular gunpowder is in the form of solid particles. Even when pressed, they do not fit tightly together and do not form a "whole" like powdered black gunpowder. Therefore, it also affects the work efficiency of craftsmen. Help, there is no need to deliberately control it strictly. The gaps left between the granular gunpowder allow oxygen to support the combustion of the gunpowder, making the burning rate more uniform and improving the efficiency of gunpowder combustion. Unlike powdered gunpowder, it will burn when shooting. A considerable portion of the unignited gunpowder is sprayed out of the barrel, so the power of firearms loaded with granular gunpowder will be greatly improved..."

Cao Wei was talking eloquently in front, and the students below were listening and constantly taking out their pens to write notes on the books in their arms.

After finishing the theoretical knowledge in half a quarter of an hour, the next step was to let the students see with their own eyes the difference between powdered gunpowder and granular gunpowder.

Cao Wei found two small containers, about the same size as the three-two-piece firecrackers of later generations, and filled them with gunpowder powder and granular gunpowder respectively.

Afterwards, Yiqiu volunteered to light the fire. He first lit the firecrackers with powdery gunpowder, and the fuse burned little by little, and then exploded with a "bang".

"Did you see everything clearly?" Cao Wei asked.

All the students nodded and replied, "I see clearly."

Then Cao Wei asked Yiqiu to light another firecracker filled with granular gunpowder. As the fuse burned little by little, there was another explosion!

"Oh!"

Obviously, the sound of the second firecracker explosion was louder, and the main body of the firecracker was also bombed more scattered.

When everyone saw this scene, they finally understood that the gap between the two could not be ignored.

Cao Wei turned around and saw Yiqiu staring thoughtfully at the two exploded firecrackers.

If Xie Jin is a genius in mathematics and physics, then this Yiqiu is the leader in chemistry.

For some chemical equations and abstract change results, Yiqiu can always accurately predict the approximate change process, and the final results are also very similar.

Cao Wei also has great expectations for Yiqiu. If he can continue to study chemistry, he may become a master in this field!

After the one-day course was completed, Cao Wei left the manufacturing bureau alone and returned to the Cao Mansion, leaving a group of students to continue the discussion.

Starting in April last year, Cao Wei spent one year and five months teaching the basic knowledge of mathematics, physics, and chemistry, and is finally almost finished teaching it.

After completing their studies, some of the students he teaches will stay in Yingtian or in the manufacturing bureau for further studies, and some will go to various parts of the country to begin to contribute to the popularization of basic knowledge.

Of course, it is somewhat impossible to bring this knowledge directly into elementary schools where young children are taught.

The limitations of the imperial dynasty still exist, and people's wisdom cannot be opened too early. This is very important for the stability of the Ming Dynasty.

But some talents can be selected in this process and then taught these professional knowledge to serve the country.

So, whether it is mathematics, physics, or chemistry, to study these three courses to a certain extent and produce certain results will inevitably require a large amount of financial support. Although the Ming Dynasty was rich at this time, it was not rich enough to allow a bunch of scholars who seemed to have "no effect on the development of the country" to do nothing all day long and gather together to study academics with their heads held in their hands. Moreover, physics and chemistry Development requires a large number of experiments as a basis, and a large part of these experiments require expensive experiments and money, and even a single type of money consumption is astronomical! That’s a lot of money again!

At night, Cao Wei, who was eating, thought of this and suddenly slapped his hand on the table, startling both Zhu Hanming and Xiao Cao Lin.

No!

It has to be open source!

I have opened my head, and I have to wipe my butt, otherwise Lao Zhu will probably say something bad about himself.

"What are you doing! You were so surprised," Zhu Hanming's eyes were filled with disgust.

Xiao Cao Lin on the side may have been frightened, and he hiccupped non-stop. Zhu Hanming hurried to comfort him.

"Stupid dad, bad dad, why are you making such a big noise to scare us Lin'er? Come on, hit him!" As he said that, Zhu Hanming took little Cao Lin's fist and landed on Cao Wei's arm.

Cao Wei scratched his head, put down his chopsticks, and held Cao Lin in his arms.

"It's dad's fault. Daddy is here to calm you down and let your mother eat..." After saying that, he looked at Zhu Hanming with an apologetic look.

Zhu Hanming raised the corners of his mouth, smiled slightly, picked up the chopsticks and continued eating.

the next day,

Cao Wei originally thought that after coming to the Manufacturing Bureau to teach the morning and afternoon classes, he would go to the palace to discuss the open source matter with Zhu Xiongying.

But after entering the manufacturing bureau, everyone was dumbfounded.

I saw more than a hundred people sitting neatly in the spacious room, but many of them were disfigured. Some had holes in their clothes, some were missing an eyebrow, some were missing a piece of hair, and some were missing a piece of hair. There are a few burns on the face... No, they don't look like burns, they look like they were exploded by explosives!

This...could it be that these powerless scholars went to have a date with someone?

At the front of the house, there are more than thirty craftsmen led by Song Ping and Zhao Heng. They are better.

"What's going on?" Cao Wei pointed at the disfigured people with his finger, "Did they get thrown into the barrel?"

Those who were pointed out by Cao Wei all unconsciously lowered their heads in shame, their faces flushed, and they did not dare to speak out.

Then Cao Wei discovered that there was one person missing in the room.

"Where is Yiqiu? Where has Yiqiu gone? Why didn't he come today?"

Still no one spoke, and the whole room was filled with a strange atmosphere.

Cao Wei raised his eyebrows when he saw this.

You guys have grown up, don’t you dare not answer!

"Song Ping, tell me!" Cao Wei rolled his eyes and landed on Song Ping.

After being called by Cao Wei, Song Ping had to stand up, smiled awkwardly, and then started to tell the story.

It turned out that after Cao Wei left yesterday, Yiqiu was still not satisfied with the explosion experiment that Cao Wei led them to do, and felt that they should explore it spontaneously.

Unexpectedly, with his response, there were many people who had the same idea as him, and many people immediately gathered around.

After discussion, a group of people approached Song Ping and asked Song Ping to support them with some gunpowder and equipment to conduct experiments to see if the different powers produced by the explosion of powdered gunpowder and granular gunpowder would change as the dosage of gunpowder was used up. New changes.

After Cao Wei's course ends, Song Ping and Zhao Heng usually deal with the matters at hand. After all, they are the two main persons in charge of the manufacturing bureau. When they have more free time, they will discuss it with others.

Coincidentally, there was something for the two of them to do in the Manufacturing Bureau yesterday. Song Ping graciously agreed to his classmates' request, and ordered people to prepare materials for Yiqiu and the others, then turned around and went to work on what he had on hand. thing.

Yiqiu took a group of people and made many firecrackers or detonators of different sizes and started experiments.

It was normal at first, the sound of firecrackers kept ringing, and a group of people observed the changes very carefully.

Then came the larger firecrackers, and then the larger detonators...

When Song Ping, who was far away from the firearms factory, heard a huge roar here, he realized that something was wrong. When he rushed over without stopping, he saw a group of people being knocked down, all black and white. It was so black that even a wall next to it collapsed!

These people were relatively good and stood far enough apart. In order to observe the explosion, Yiqiu stood two steps closer. Although there was a long distance between them, it was obviously not enough in front of a detonator of a certain size.

Therefore, the others suffered minor injuries, while Yiqiu suffered serious injuries... at least on the face... and there were several wounds all over his body.

After hearing this, Cao Wei couldn't help grinning.

"Why didn't you inform me about such a big thing?"

"Yi Qiu said, you can't bother the teacher for them..." Song Ping was very innocent.

"Okay, sit down," Cao Wei finally waved his hand helplessly, and then began to teach.

In the afternoon, after the course was taught, Cao Wei found out the location of Yiqiu's house and drove there to visit. This is a good seedling, so don't waste it...

Yiqiu's family was of average status, a little better than ordinary people. When Yiqiu's family members learned that it was Grand Master Cao who was coming, they welcomed him in with great enthusiasm. They did not complain at all because their child was injured in the manufacturing bureau.

After the greetings, Cao Wei walked into the room and saw Yiqiu lying upright on the bed with several layers of low-quality linen wrapped around his face and several pieces of dog skin plaster on his body.

Seeing his funny look, Cao Wei couldn't get angry anymore and asked helplessly.

"how?"

"Teacher, there is less saltpeter."

"What?" Cao Wei was confused for a moment.

"Although granular gunpowder contains more oxygen than cannonballs made from powdered gunpowder, when the granular gunpowder reaches a critical point, there is still too much gunpowder and too little oxygen. If more saltpeter is added, the gunpowder will burn more fully, and the cannonball will It must be more powerful!"

Cao Wei stared blankly at Yiqiu, who only had two eyes exposed. He couldn't help but twitching the corners of his mouth, and stretched out his thumb.

"You're such a fucking genius!"

(End of this chapter)