After discussing the matter of completing the ministry, Chen Qing smiled at everyone and said: "Let's discuss the second thing next, which is about the issue of army restructuring. To establish the Yong Kingdom, the army must also be regularized. The previous wild way will not work.
So I will take this opportunity to discuss with you political leaders how to change it."
Zhang Xiao pondered for a while and said: "I have also considered several options, but I feel they are not suitable. I suggest asking the military generals for their opinions, listening to their ideas, and respecting the interests of the military, so that civilian officials will not formulate the military system."
Disadvantages of.”
Several political participants supported Zhang Xiao's suggestion. Chen Qing heard the tacit understanding between them and immediately understood in his heart that the army was his base. The political participants in the Internal Affairs Hall were very afraid of the army and were not willing to get involved easily.
Helpless, Chen Qing could only smile bitterly and said: "Okay! I'll find a chance to talk to them and listen to their opinions."
.........
At noon, Chen Qing did not go out and simply had lunch in the government office. At this time, Wei Ji said at the door of the government office: "Your Highness, they are here!"
"Take them to the meeting hall and wait. I'll be right over."
Although Chen Qing focused his energy on government affairs, the gravity clock was also a major event. It not only had a great impact on the lives of the people, but also had a significant impact on marching and fighting. No matter how busy he was, Chen Qing still wanted to make the gravity clock.
come out.
He took the drawings and walked quickly to the meeting hall.
There were four people sitting in the meeting hall, Professor Yan from Taixue University and his favorite disciple Song Zhu. Professor Yan's full name was Yan Kuo, his official title was Doctor of the Imperial College, and he was an official of the eighth rank. Professor was just his professional title, so he was called "Professor" by future generations.
Same as teachers.
The other two people are the shopkeeper of Jubao Pavilion, Xu Da, and the goldsmith Li Si. The two groups were originally unrelated, but Chen Qing brought them together.
However, Yan Kuo knew the goldsmith Li Si. Li Si's skills were exquisite. Yan Kuo once wanted to invite Li Si to give lectures at Taixue, but Li Si was too busy and had no time, so he had to give up.
But I didn't expect that they would meet again in King Yong's palace.
At this time, Wei Ji walked in accompanied by Chen Qing, and the four of them quickly stood up to greet him.
Chen Qingxiao asked: "Do you know each other?"
Yan Kuo smiled bitterly and said: "Bizhi originally wanted to invite Master Li to give lectures at Taixue, but he was too busy and had no chance."
"Oh! There may be a chance in the future."
Chen Qing asked the four of them to sit down, and then said: "I guess you haven't had lunch. You will go to Qingfeng Tea House for dinner and tea later. It will be recorded in my account. I will treat you today!"
"Your Highness is too kind!"
Chen Qing said to Wei Ji again: "You will take them to dinner later."
Wei Ji nodded.
Chen Qing then said to everyone: "I invited four of you here today because I want to make something. To be precise, it is a timing tool. You all know the hourglass!"
The four people nodded, and Chen Qing added: "The hourglass relies on the precise flow of fine sand to rotate the gears, and then the villain appears accurately to tell the time. However, there is a very troublesome part in that the fine sand needs to be added every day. A little
If you are not careful, the amount of sand coming out of the hourglass will be inaccurate, and then the timekeeping will be messed up. The same goes for the hourglass. It is driven by water power, which is very troublesome and not easy to be accurate. I thought about whether I could make the gear rotate accurately by itself. "
Song Zhudao: "No matter how the gear moves, it needs a force to drive it. I think this is the key."
"well said!"
Chen Qing glanced at him approvingly and said: "When I gave you a lecture two days ago, I mentioned a kind of power, a huge boulder rolling down from the top of the mountain. Do you still remember it?"
Yan Kuo and Song Zhu nodded. They both remembered that Shopkeeper Xu and Li Si were confused, but they did not say anything.
"I call that force the attraction of the earth, or gravity. No matter how high we throw stones into the sky, they will fall to the ground. This shows that the earth has a force that attracts everything to go downwards, so water goes downwards.
This is the truth."
Yan Kuo and Song Zhu both nodded silently, feeling suddenly enlightened.
At this time, Chen Qing took out a small meteor hammer. It was not a rope, but a thin copper rod. The other end was hung on the handle so that it could move freely. Chen Qing smiled and said: "Let's do an experiment!"
The four people's eyes were fixed on the meteor hammer. Chen Qing pulled up the copper rod of the meteor hammer and let go, and the meteor hammer began to swing.
"Have you seen that when the meteor hammer falls, does it have a downward force? Then can the gear have power to drive?"
"Yes! That's right."
Yan Kuo and Song Zhu both understood and nodded together. This time even Li Si understood. He had made a golden hourglass and he understood the principle.
"Then the meteor hammer swings back from the other side and pulls the gear on the left. The left and right gears rotate in turn, driving a large gear to rotate continuously. The force is very uniform. Is this equivalent to uniform water flow or uniform flow?
of fine sand?”
Seeing that everyone understood, Chen Qing smiled and said: "But there is a major problem here, that is, the meteor hammer will stop in the end, but I want the meteor hammer to never stop. What should I do?"
Everyone shook their heads in confusion, Chen Qing said slowly: "Actually, there is a way, which is to make a grappling device. The copper hammer is swung to the highest point on the left, and there is a clip to grab the copper rod, and then released, and the copper hammer is swung to the right.
At the highest point, there is also a clamp to hold it, and then releasing it is equivalent to starting over every time, so this grapple is the key to the species. I don’t know how to make it, so I need you to discuss it with the craftsmen."
After a pause, Chen Qing asked again: "Do you understand the principle of this grappler? This is the key. If you don't understand, I can explain it again."
The four of them all nodded to show that they understood. Even though Shopkeeper Xu didn't know what the source of power was, he understood the gravity that Chen Qing was talking about, and he also understood the principles of the grapple, which meant starting over every time.
Chen Qing took out the drawing, laid it out on the table and said, "I've explained the principles clearly to you, please look at this picture again!"
Chen Qing drew two drawings. The first drawing was the principle he just talked about, including pendulum, gear, and grapple. The four of them understood it at a glance.
"Is this what His Highness just said?"
"Yes! The key is the second picture."
Chen Qing unfolded the second picture. It was a bell tower. There was a huge hour hand on the bell tower, surrounded by twelve hours, Zi, Chou, Yin, Mao, Chen, Ji, Wu, Wei, Shen, You,
Xu, Hai, there are eight quarters between each hour.
"This is the Bell and Drum Tower. I need to make a big clock. Below is the pendulum. It keeps swinging, driving the gear to rotate. The gear rotates behind it, and then drives the long needle to rotate at a constant speed. Do you see it? Now it is long
The position pointed by the needle is Mao hour and quarter!”
Everyone nodded together. With the explanation of the principle just now, they all understood the big clock picture of King Yong at once. It is twelve o'clock and ninety-six quarters. It is very simple and easy to understand. The long needle just points to the Mao point.
grid, that is the moment of Mao hour.
Yan Kuo smiled and said: "Your Highness made it very clear. We all understand it. We will start looking for craftsmen when we get back."
Chen Qing warned him: "It's one thing to understand the principle, but it's another thing for the craftsmen to make it. When you go back, you must explain the principle clearly to the craftsmen. If you don't understand anything, you can ask me.
!”
Li Si was confused and asked: "This kind of big clock doesn't seem to have much to do with me!"
Chen Qing smiled and said to him: "You also go to Taixue to participate in the production of the big clock and learn it thoroughly. After you understand how to make it, your task is to build a small clock that can be placed on the table.