Liu Weichao listened and saw the memorial he took out. He couldn't help but be a little curious and asked, "What's the matter?"
"That's right!" Emperor Chongzhen heard this and quickly replied, "The rails at the mine have been built, and the experimental steam train has been running for a while. It feels like a real railway can be built to reach the capital.
.However, there are some questions that I don’t understand, so I want to ask you for help!”
The railway information Liu Weichao gave to Emperor Chongzhen before was just how to do it without explaining the reasons.
At this time, when he heard what Emperor Chongzhen said, he smiled and said: "Okay, you can ask!"
Emperor Chongzhen listened, looked at the opened memorial, and read to Liu Weichao: "Why must the wooden rails be covered with iron sheets? If they are not covered with iron sheets, the progress of railway construction will be much faster!"
Hearing this, Liu Weichao laughed. Everyone who had gone to school knew about this problem, so he explained to Emperor Chongzhen: "Because the train has to pull heavy things, the smaller the friction, the better.
The friction force is much smaller than that of wood, so when the train pulls up the carriage, it will be much easier. Simply put, the smoother it is, the smaller the friction force is, and the easier it is to slide. Do you understand?"
Emperor Chongzhen could understand this explanation after thinking about it for a while, so he nodded.
Before he could speak, Liu Weichao added: "This knowledge of friction is available in physics textbooks. Maybe it's not in the textbook I gave you. I'll give you a more advanced physics textbook later!"
As soon as he finished saying this, Emperor Chongzhen seemed to have remembered something. His face turned red and he replied in a low voice: "I remembered it. There seems to be this in the physics textbook you gave me."
He was a little unhappy in his heart. He turned around and thought about making the eunuch in charge of the Railways look good. He asked him all the questions. It was embarrassing!
Liu Weichao was stunned for a moment, and then suddenly realized that learning the knowledge in textbooks is one thing, and being able to apply it is another thing. Moreover, the people who were responsible for building the railway under Emperor Chongzhen might not have studied the mathematics, physics and chemistry that he had given in the past.
must.
After understanding this link, I feel that there is still a long way to go for Emperor Chongzhen to truly apply mathematical, physical and chemical knowledge.
So, he smiled and said to Emperor Chongzhen: "It's okay. In the future, if you promote science, more people will understand it."
When Emperor Chongzhen heard that Liu Weichao gave him the steps instead of blaming him, he breathed a sigh of relief and quickly asked the next question: "Why does a railway have rails and sleepers, and it has to be paved on gravel? If not
If it's such a hassle, building the railway can be much faster!"
When asking this question, his voice was obviously not as high-pitched as the first one.
"Of course it's because of the pressure!" Upon hearing this, Liu Weichao immediately answered. Then he felt that the standard answer seemed a bit difficult, so he said to Emperor Chongzhen, "Wait a moment, I will search for relevant information, and then I can answer you accurately!
"
Upon hearing this, Emperor Chongzhen seemed to be relieved and said quickly: "It's okay, just search!"
After a while, Liu Weichao found the results and immediately replied to Emperor Chongzhen: "This has to do with load-bearing. The load-carrying capacity of the train will be very large. If the rails are laid directly on the roadbed..."
This time, unlike the previous question, Liu Weichao could answer the question casually. After explaining it to Emperor Chongzhen for a while, Emperor Chongzhen finally understood what was going on.
"It turns out that it is really necessary to do this!" Emperor Chongzhen couldn't help but sigh when he heard this, "It's just laying like this, but it actually involves the solution of several problems."
After hearing this, Liu Weichao immediately smiled and said: "Of course, these are the best plans obtained through exploration and practice. Each aspect has its reasons. Let me tell you, you have my golden finger.
It really saved me an incredible amount of time and energy!”
"Ah...oh, haha..." Emperor Chongzhen heard this. Although he didn't quite understand what the golden finger was, he roughly guessed what it was based on the content of the words, so he laughed and said, "Indeed, you are my biggest golden finger...
…thigh!"
He himself felt that his fingers were too thin to describe Liu Weichao's effect on him, so he actually said the words "golden thighs", which was enough!
When Liu Weichao heard this, he laughed and then said to him, "Do you have any more questions?"
"Yes!" The questions and answers were answered in a harmonious atmosphere, and Emperor Chongzhen quickly asked the next question, "Why do the rails need to be made into an I-shape?"
When Liu Weichao heard this, he couldn't answer this question directly, so he had to search for the answer again, and then explained it to Emperor Chongzhen.
Or because the train is very heavy, for this purpose, the top surface of the railway must have a certain width and thickness to withstand the pressure, and for the stability of the rail, the bottom surface of the rail must also have a certain width; and in order to adapt to the
The rim of the wheel and the rail must have a certain height.
Since the I-shaped structure was invented, it has remained like this for hundreds of years without much change, simply because it is the most reasonable.
After giving Emperor Chongzhen an explanation, Emperor Chongzhen, who seemed to understand but not understand, asked the next question.
Where the railway turns, why are the outer rails higher than the inner rails?
And why should there be some space left at the joints of the rails?
…
There were really a lot of questions, and Liu Weichao couldn't answer most of them right away, so he could only answer them by searching for answers.
After finally asking the question, Emperor Chongzhen sighed: "It turns out that there is a lot of knowledge in even the most inconspicuous places!"
Liu Weichao listened and nodded. After being asked so many questions by Emperor Chongzhen, he also said with emotion: "Actually, I didn't expect that there are so many things to pay attention to. You are good there. It seems that you really have to do it seriously, and you also have to pay attention to it."
You will wonder why, this is a talent!"
When Emperor Chongzhen heard this, he immediately smiled and thought to himself, the eunuch in charge of the Railways did a good job and was indeed doing his job seriously!
After hanging up the video communication, Emperor Chongzhen couldn't help but fell into deep thought.
From the communication with Liu Weichao just now, he really felt the importance of mastering scientific knowledge. This is very practical knowledge, and the effects it brings can be immediate.
However, nowadays, those who have the best grasp of scientific knowledge are actually those in the Royal Academy of Sciences of the Ming Dynasty. In addition, there are the eunuchs and maids in the palace.
Because the textbooks given by Liu Weichao were convenient in the palace, and I could learn everything in one sentence.
Nowadays, talented people are hard to come by, so should we send these people to the Railways?
It feels a bit weird to have a group of eunuchs and palace maids mixed in among a group of soldiers!
If scientific knowledge is promoted outside the palace, will today’s scholars learn scientific knowledge?
Emperor Chongzhen has now passed the age of impatience. Thinking about this issue, his brows furrowed and he still felt a little hesitant in his heart.
After all, Confucianism has controlled scholars for thousands of years. If they are suddenly impacted by scientific knowledge, there will definitely be a lot of problems!
After pondering for a while, Emperor Chongzhen couldn't help but sigh, feeling that it was not yet time. The most urgent task was to put down the rebellion of thieves!
He was thinking about it when suddenly there was movement on his phone. When he took a closer look, he saw that it was Liu Weichao who had sent a document about what kind of cement it was made of.
When Emperor Chongzhen was about to click on it, another video communication request appeared on the screen, so he immediately clicked "Connect".
Liu Weichao appeared on his mobile phone, smiled and said to Emperor Chongzhen: "What are you going to do next?"
"Of course, we sent the Jingying Camp and the Yongwei Camp south to exterminate the bandits!" Emperor Chongzhen was a little confused about what he meant, so he answered casually, and then asked, "Isn't that so?"
He can feel it, what should Liu Weichao say about this?
Under Emperor Chongzhen's curious gaze, Liu Weichao smiled and said to him: "Look, what do you think of my thoughts like this?"
After finishing speaking, without waiting for Emperor Chongzhen to speak, he expressed his thoughts and said: "Thieves, thieves, thieves, the most difficult thing is not to defeat the thieves, but how to prevent the thieves from escaping, don't you think so?"
?”
As soon as he heard this, Emperor Chongzhen had a headache and said to Liu Weichao: "Yes, from the beginning, the imperial officers and soldiers fought countless victorious battles, but they were unable to completely wipe out the bandits, and even spread from Qin to all over the country. I really
I have a terrible headache!”
Liu Weichao listened and said with a smile: "So, I think fighting against the bandits and winning against the bandits is just a superficial appearance. The most important thing is to eliminate the soil where the bandits are born and effectively prevent the bandits from wandering around at will."
Maybe. Only in this way can the rebellion of thieves be truly and completely quelled! What do you think?"
When Emperor Chongzhen heard this, he immediately became energetic and felt that it made sense. He quickly said to Liu Weichao: "Yes, yes, yes, what should I do specifically?"
"I just thought about it!" Liu Weichao said to him with a smile, "I also summarized the opinions of the big guys on the forum, and I think it is more appropriate for you to do this!"
Without waiting for Emperor Chongzhen to ask, he continued: "You must stabilize your basic base, improve people's livelihood, and no longer have people in dire straits. Specifically, you can start from the capital, or the north. While you're at it,
Taking advantage of this great victory, we can take advantage of the continuous import of materials from the south to build water conservancy projects, open up wasteland for farming, build road infrastructure, etc. in the north..."
Seeing Emperor Chongzhen's eyes light up, Liu Weichao smiled and said: "Didn't I just give you a document? It's for burning cement. This is a basic material that you are waiting for, and is very useful no matter what you do. In addition,
, Railways, if your current technology may be more difficult for mountainous areas and rivers, building railways on plains should be the easiest thing. You can also plan to build several railways together if you have the strength.
By then, it will be easy to transport materials, and even transporting troops will be much easier..."