The reason why Zhu Zai-chan was confused was that he didn't know how to describe the feeling Chen Mu brought him, just like a... I don't know.

But Chen Mu knew that he did regard Zhu Zai as an artificial intelligence computer with input buttons and output display screens, and as the most advanced computer. As long as he inputs a question, he will show the answer from the display screen.

Zhu Zai-chan did this, because he thought it was interesting to ask these questions in Chen Mu.

So interesting.

This is a person who is tireless in exploring the truth. Chen Mu's problem is difficult, but it is not too difficult for him.

"Master, everyone knows that the world is round. If the earth magnet sucks everything in the world on the ground, the two sides must be different. This can be calculated, but the roughness is not accurate."

Prince Zheng moved as soon as he said that, lifted his pen and drew an arc on the paper. Ink on both sides formed a sea of ​​ink, but explained it to Chen Mu and Chen Gongshi, and then said: "It is better to use a more accurate method to measure the water level difference by layered dam building in the Song Dynasty."

As he said that, Zhu Zai's drawing several hills of different heights on the picture, adding water levels of different heights, and then drew several dams, saying: "Put the canal sections into a step-shaped dike in layers, dig water into it, and then measure the water surfaces of each section step by step, and accumulate the differences in each section, and the sum of the sum is the terrain and water level from Changsheng Port to Daxi Port."

Zhu Zaiyou said: "Except for both ends, they are all lakes and rivers. The water drawn out can irrigate the surrounding farmland - how long is the canal?"

"I can't remember clearly, the military government has this report." Chen Mu thought for a while and said, "More than a hundred miles, I pass through many lakes."

"It's easy to say, it's not as long as the Bian River. The water level difference in the 840-mile section of the Bian River in Song Dynasty was calculated like this. The difference in height was 19 zhang, four feet, eight inches and six minutes, and it was accurate to the point of being accurate. Isn't that enough?"

Chen Mu blinked and looked at the very intuitive and easy-to-understand sketch on this picture, and asked himself torture his soul directly: That's that simple?

"Then, there is still a problem." Chen Mu stuttered a little and reached out to the picture and asked, "The sea level is different, how should the canal be built? The amount of digging the ground level will be too large, which will cause the sea water to flow backwards and flood the fields on both sides of the Taiwan Strait. Although the imperial court did not have much field on both sides of Panama... it was mainly too labor-intensive, and the place was located in the tropical zone, and mosquito miasma was not good for construction."

When Chen Mu said this, Zhu Zai's brows became tighter and tighter, and his eyes were extremely exploring. He asked quietly, "Dig the ground level? Why do you need to dig the ground level?"

"How can the water be connected together without digging, and how can the boat pass?"

"Does the Grand Marshal know that there is a kind of water conservancy in this world called a re-gate? Double gates have been found in the Tang Dynasty, and the most canals in the Song Dynasty, and the water levels of the canals in the Central Plains are also different. In the first year of Yongxi of the Song Dynasty, the transport commissioner Qiao Weiyue built the Erdou Gate on the canal north of Huai'an."

"The two gates are more than fifty steps away. The boat enters the hanging door to store water. When the level is released, the boat will follow the water and passes without any obstacles." Zhu Zaiyou waved his hand and said, "It is used in parallel with the weir, use gates for more water and use gates for less water. If there is tide, you can repair the triple gate. If the water source of the re-gate is insufficient, you can also repair one or two water storage Macao next to it."

"As for how many re-gate needs to be repaired and where to practice, you still need to actually read it before you can decide... Why not take this opportunity to take the water conservancy course at the royal university."

Listening to Zhu Zai's words made Chen Mu laugh. He realized that the Prince Zheng was very smart, and there was no need to say much. He was diligent in studying, but he was just lazy.

He wanted to study the astronomy calendar, and then he asked the royal university to offer astronomy courses, and took his brothers, nephews and even relatives of his grandchildren to study astronomy with him so as to direct them to work. Now Chen Mu wanted him to offer suggestions for water conservancy, and he was also afraid of trouble, so he simply planned to let the royal university offer a water conservancy course, and fortunately he continued to call on these brothers, nephews in the future.

But what could he say? As long as his problem can be solved, even if Zhu Zai-chan opened a pig farming department at a royal university, it would be fine.

He looked around Zhu Zai's outdoor laboratory, looked at where to look, clapped his hands and said, "Okay, this matter is settled. It's a great thing for the royal family to start water conservancy studies again!"

As he said that, just as his hand was about to touch a small piece of copper placed together with the copper tube on the cabinet shelf, Zhu Zaiyou quickly stopped him: "Slow up, the man in this tiny is mercury, which is poisonous."

Chen Mu was so scared that he hurriedly put his hand back, frowned and asked, "The poisonous prince still put this?"

"Oh, I'm still what I said just now. If there are no utensils, I can only measure it myself and make it myself. This copper tube was made by me, a standard ruler, and one hundred millets are arranged vertically as one foot; the copper blocks are also made by me, and the contents are ten millets are arranged vertically and horizontally, and they are square inch."

Chen Mu asked, "What is the use of this square inch and copper pipe?"

"Working an instrument, the air comes out from the mouth and then comes out from the hole. People who are familiar with music theory can hear how far the breath has been blown with their ears. One foot sound is the regular rhythm of the yellow clock. The length of the pipe and the diameter of the pipe is not accurate, so the sound is not accurate."

"If you want to make the sound accurate, you need to make the pipe accurate. However, the inner diameter of the pipe is different from the upper and lower. In the past, the content of the pipe was measured with millet, so there were gaps in millet. Therefore, when using mercury, you should first use cubic inch, weigh the weight of square inch, and then carry mercury in square inch, and you can see that one inch of mercury weighs thirteen taels, three cents, nine cents and two cents."

"In this way, just count the amount of mercury in the copper tube and add it with arithmetic to know the geometry of its content."

Chen Mu blinked and Zhu Zaiyan measured the density of mercury... So, in order to better play music, this prince of the Ming Dynasty was forced to become a scientist by this era?

"Bang!"

Chen Mu slapped his hands and said, "The prince's method can be used to measure the gun barrel! You don't need mercury, just use water. As long as you measure the content of the standard gun barrel, all gun barrels can be measured with this. If there is more water and less water, the inner wall of the gun barrel will definitely be uneven."

Zhu Zaiji's discovery made Chen Mu imagine: "Since there are musicians like the prince who can tell the length of the gas by listening to sounds and using arithmetic calculations, we can measure the expansion of the gas ignited by the gunpowder through sounds to calculate the power of the gunpowder in different formulas, and to calculate the relationship between gunpowder, lead balls, diameters, lengths and power more accurately."

At the end, Chen Mu raised his hand and covered his mouth, watching Zhu Zai-kun finally clenched his hands into fists and laughed: This Prince Zheng is really a treasure house.

If normal development is a maze that people take the chance to walk, even if they walk to the front of the door, they will have to use all their strength to push open the door of science and make a gap.

Then Chen Mu felt that as long as he and Zhu Zaiyou stood together, the maze would have been installed on navigation, and he also brought a cannon. The master needed to walk to the door and ask Zhu Zaiyou to light a fire, and the shells could smash the door, and then Zhu Zaiyou kicked it open.

"Oh!"

Chen Mu's laughter could not be stopped, so that Zhu Zai-kyo and Chen Shigong looked at each other. They didn't understand why Chen Mu was so happy, but after seeing Chen Mu laugh enough, they opened their hands to them: "Come on, let's talk about how to do a microscope now!"

Zhu Zaiyu's expression was very troublesome, and he shook his head and said, "I really don't understand this."

Chen Mu was even more happy. It was considered that there was something you didn't understand. He was about to say, "It's okay if you don't understand, I understand." When Zhu Zai's words came out after hearing what Zhu Zai said.

"Shen Kuo of "Mengxi Bitan" said that when the ancients made bronze mirrors, the mirror was flat when the mirror was large, and the mirror was convex. The mirror was sunken, and the face was large; the mirror was bulging, and the face was small; the mirror was bulging, and the face was small. The small mirror could not fully reflect the face, so if the mirror was slightly convex, the face could be narrowed down a little, and the face could be fully reflected even if the mirror was very small."
Chapter completed!