Chapter 237

In the school, all the people look at Xiao Ming, including Luo Xin.

The gun in Qingzhou now belongs to the smoothbore gun, that is, the direct fire gun. In ancient times, the gun was a reduced version of the gun. Because of this, the principle of three points and one line was also applicable to the gun.

However, the three points and one line does not mean that it is OK to install a sight and a light door at random. The sight and a light door of different guns are different, which need to be tested. After all, the power and weight of different guns are not the same.

Therefore, his artillery also needs to test and get the data to install the accurate sight and light door.

"So that's the parabola principle. When a projectile is fired, it will be affected by gravity." Xiao Ming said.

When he said this, the whole school looked confused.

Looking at the confused faces, Xiao Ming suddenly felt a little tired. That's why he set up the school. It's not something that can teach Luo Xin in three or two days.

First of all, he had to teach them to add, subtract, multiply and divide. Then, starting from basic physics, it would be OK to reach the level of physics in grade two of junior high school. He estimated that even with the high quality of crystal stone in his science and technology, it would take nearly a month for Luo Xin and other people to learn how to calculate the impact point and complete the tests of collimator and gate.

Of course, he won't sell the gun with the sight and the illuminated door, but leave it for his own use. Once he has the sight and the illuminated door, it will be a technological upgrade.

When the two armies confront each other, the superiority of this gun will be immediately highlighted.

"We don't understand your highness." Luo Xin is a military general after all, and he has a headache for this knowledge.

"Learn and you will understand." Xiao Ming doesn't care about Luo Xin. He's not ready to tell Luo Xin that the sky is round and the place is round. Anyway, this guy walks on land and it's useless to learn. He has to say this to Yue Yun. Fortunately, Yue Yun is a good teacher and much better than Luo Xin.

Then he began to talk about basic mathematics, and wrote the basic Arabic numerals on the blackboard. In the future navigation, Yue Yun also needs to carry out mathematical calculation to determine the orientation, so he also has to learn this knowledge.

For the rest of the day, Xiao Ming spent most of his time in school, from the simple Arabic method to the addition and subtraction method within ten to the more complex calculation method.

Because they are all adults and have the initiative to learn, the effect of this afternoon's course is very good. Moreover, because of the role of the crystal stone of science and technology, they remember most of the content.

In the evening, Xiao Ming asked Lu Tong to arrange accommodation for Yue Yun and others. He told Luo Xin to come every afternoon to listen to the lectures before returning to the palace.

At this time, the sky has some hazy dark, he was ready to go back, suddenly saw a man coming from the door of Bowen college in a hurry.

"Rich man!" Xiao Ming sees this person clearly, surprised way.

It was Qian Dafu who came. As soon as he saw Xiao Ming, Qian Dafu immediately said, "Your Highness, we have finally found the saltpeter mine, and we have also found the lead mine!"

"What, really?" Xiao Ming is very happy.

"Yes, your highness, we found it at last." Qian Dafu used to be a fat man, but now he is black and thin. Now he looks excited.

Xiao Ming was also excited. He said, "great, rich. You have made a great contribution."

"As long as you don't delay your Highness's business, I will be happy. As for the credit, I really don't care." Qian Dafu said with a smile.

Xiao Ming was moved. Qian Dafu was a man he completely believed in, so he gave him the responsibility of searching for minerals.

What he lacks now is resources.

"Back to the palace, I'll let the kitchen prepare a big meal for you." Xiao Ming laughs.

After returning to the palace, Xiao Ming asked the kitchen to prepare for food, and went to the main hall with Qian Dafu to ask about the nitramite mine.

"Your Highness, it's really hard to find this mine. We've been looking for it for a whole month, but we haven't found anything. Do you know how we found it later?" Qian Dafu said.

Xiao Ming shook his head.

"At that time, we were too far away from the nearest village to go back, and there was no food left. Several soldiers negotiated to go hunting in the mountain. Unexpectedly, when we were chasing a hare, the hare suddenly got into a cave in the forest. Several soldiers went in and found that there was saltpeter in the cave." Qian Dafu is beaming with joy.

What Qian Dafu said is very simple, but Xiao Ming can understand the difficulty of searching for minerals.

At this time, the saltpeter mine made progress, and neither the king of Shu nor the imperial court could coerce him.

"It seems that I have to thank the rabbit." Xiao Ming looks happy, he said: "where is this lead mine?"

Qian Dafu drank Shuikou and said, "the lead mine is a little far away from Qingzhou, near Yizhou."

Yizhou is about 200 li away from Qingzhou, which is really a little far away. He said, "far away, far away. It's better than nothing, but is there still no progress in this tungsten mine?"

Qian Dafu shook his head and said regretfully, "no tungsten mine has been found, but your highness, why do you have to look for this tungsten mine?""Because the smelting of tungsten ore and wrought iron can make the material harder. If there is tungsten ore, Benwang can try to produce tungsten alloy. In this way, the hand Lathe will have qualified cutting tools, and Benwang will be able to make a magic machine." Xiao Ming said that the mysterious machinery in his mouth is naturally the steam engine.

The population of Qingzhou is too small. Once the steam engine comes out, it can replace the lack of manpower with steam power.

More importantly, it can greatly improve the steel making capacity of the steel mill.

Qian Dafu seems to understand, he said with a smile: "in this case, the old slave next focus on looking for tungsten."

Nitramite solved the problem of gunpowder, lead solved the problem of artillery shells and future guns and bullets. Xiao Ming has a big block in his heart, but now he wants to prepare for the next technological upgrade.

And that's what makes the lathe work.

"Don't worry. Take a rest this time. I don't want to make you tired." Xiao Ming said.

They talked for a while, then lvluo came in and said, "Your Highness, the food is ready."

"Let's go and eat. I asked the cook to prepare your favorite smoked pig's feet." Xiao Ming said with a smile.

As soon as he mentioned this, Qian Dafu immediately laughed, "Your Highness, the old slave is good at this. No matter how tired he is, it's worth it."

Xiao Ming laughs when he hears the words. Lvluo also lightly covers her mouth and laughs. After returning to Qingzhou, the girl gradually recovers.

Xiao Ming also likes to eat smoked pig's hooves, but it's not in Dayu. He taught the cook to make them elaborate. Qian Dafu has been addicted to smoked pig's hooves since he first ate them, and his mouth watering when he saw them.

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