Chapter 709 It’s raining

Catfish was not considered a good aquatic product in later generations when life supplies were abundant, but it is different now because this fish carries its own oil and is plump and moist.

Su You's garlic-braised catfish is a Sichuan dish, and the taste is different. Everyone enjoyed it.

Su You hasn't cooked for a long time, and now he feels that his skills have not yet recovered, which makes him proud.

After toasting everyone again, Su You said to Chen Zhaoming: "Those locust powders are sent to Zhengzhou to be used as feed additives. There is no need to import fishmeal this year and next."

Chen Zhaoming nodded.

Su You added: "The Si Tianjian's ceremonial platform does not necessarily have to be completed before I leave office. The science and engineering things must not be adulterated in the slightest."

Chen Zhaoming said: "Yes, but even according to the normal construction period, it is almost the same."

Su You said: "What about power? Song Chenghuode, it is not good to use water to transport instruments. My suggestion is to imitate the bell tower and use the potential energy of heavy objects to drive it, and build the platform higher to facilitate the observation of celestial bodies."

"Don't underestimate this. After the economic power of the Song Dynasty grows in the future, all state capitals, major counties, observatories, and bell towers will be built. This is a national-level large-scale series of projects, and it is also the most important way for science and engineering to improve people's lives.

What a symbol.”

"We need to hurry up on the miniaturization of clocks. Just use the model given to His Majesty as the basis. The remaining difficulty is not that big. After that, we can make a navigation clock, equip it with a gyroscope, and install it on a sea ship. This thing

Measuring longitude is as reliable as a moon phase watch."

Zhang Dun was extremely envious: "I heard that Zhang San and Zhang Taiju had the ability to guide the stars with longitude and latitude. Is that what they were talking about? There are also rumors that he has a spaceship that can appear and disappear on the sea. Others need two months to travel, but he only needs ten.

On this day, he is the only one who can find Tang Shiro, the giant of the sea. With such a treasure ship, he deserves to be rich."

Su You thought for a moment: "Zi Hou, if I told you that the earth under our feet is actually not flat and that all of us live on a huge sphere, would you believe it?"

Zhang Dun seemed to have heard the funniest joke: "How is this possible? You can't imagine it! Those people living under the ball, don't they all fall down... ah no, fall up... ah no, fall up to the sky

Are you done yet? Hahahaha..."

Su You clasped his hands together and said: "Amitabha, the donor has just missed the first-class immortal fate. The longitude and latitude have nothing to do with you anymore."

Zhang Dun let out a "burp" and suppressed his laughter: "What do you mean?"

Chen Zhaoming explained: "The moon phase chart can determine the longitude of a ship at sea, but if we draw some latitudes parallel to the equator between the two longitudes, we will find that their lengths are actually different."

"The higher the latitude, the shorter the latitude lines between the longitude lines. When you reach the North Pole, there is only one point left."

"Only spheres or cones have such characteristics."

"The Geography Department of Si Tianjian followed the idea of ​​​​the supervision and judgment. After eliminating the influence of altitude from the known distances between various places in the Song Dynasty, they cut them in proportion with iron wires, and then connected them in series to form an iron network. We found that this

The iron net is indeed not flat, but a roughly spherical surface."

"If we expand it through mathematical methods, this spherical surface will form a huge sphere."

"Combined with astronomical measurements, we have now calculated that this sphere, measured using new weights and measures, has a radius of 6,370 kilometers and a surface area of ​​500 million square kilometers. The distance from the North Pole to the South Pole is 20,000 kilometers.

"

The catfish on Zhang Dun's chopsticks fell into the bowl: "Is this... so scary?"

Chen Zhaoming smiled and said: "This is the theoretical basis of the longitude and latitude star-finding technique. Theoretically, any point on this ball can be converted into two degrees of longitude and latitude, and we have a way to measure the longitude and latitude of the point, and then look at the target

By knowing the longitude and latitude of the land, you can know the direction in which you are going.”

"Mingrun is right. If you don't believe this, you won't be able to master this technology. You will really miss the opportunity."

Su You smiled and said: "If you believe it, you can walk in a straight line on the vast sea from Goryeo to Hangzhou; if you don't believe it, you can only circle slowly along the shore of the land."

"So whether you believe it or not, it's better not to believe it. If you don't believe it, this is the unique skill of Sitong Shipping Company. Others can only watch Sitong Company make a fortune."

Zhang Dun was so shocked that he stuttered: "Science...science and engineering...have come so far..."

Su You nodded: "This was inspired by my famous minister Chen Gong. After he became an official, he became obsessed with studying Yi Xiang..."

Zhang Dun knew this: "The Treatise on Making Utensils and Symbols"!

"Yes, that's it!" Su You nodded: "'The idea of ​​'making tools still depends on images' has been around since ancient times, but it has never been taken seriously. The fundamental reason is that the ancients' thinking ability, academic reserves, theoretical tools, and

It cannot reach the heights it is today.”

"But now we can, we can let the theory take the lead, and then either use experiments to confirm it, or lead technology and applications to keep up."

"This is the essence of 'making instruments and images', and it is also the most valuable part of this theory. It is a huge progress in human thinking, and it is also inevitable after metaphysics has developed to a certain height - in the past, practice came first,

Then the theory is refined. Now you can have theory first, and theoretical research can be far ahead of practice! It can become a guide for practice!"

Zhang Dun murmured: "Then this world will completely change..."

Su You smiled: "The world has not changed, but our vision of the world, the way we think about the world, and the methods of transforming the world have begun to gradually change."

Zhang Dun laughed loudly: "What a wonderful argument, what a good argument! A frivolous villain like Deng Wenyue, with his low knowledge, dares to slander Ming Run for his miraculous skills! It's so ugly!"

Su You smiled and said: "I don't read enough, but I blame others for being too knowledgeable. There are many such people in the world."

After speaking, he spread his hands and said: "He is not a flat pot. How can I still urge him to study?"

Bian Guo was eating fish head soup and rice on one side. Hearing this, he raised his head, with two bits of rice stuck to the corner of his mouth: "Bian Guo listens to daddy the most."

Everyone laughed, and Zhang Dun was so happy that he slapped the table. He felt that the atmosphere in this courtyard was much more comfortable than being with the gang in Wang Anshi's mansion: "Mingrun, you have such a mouth... just keep it closed on weekdays."

It’s just tight, but it’s actually not much better than Zizhan! Hahaha, this witticism is enough to make you realize!”

Li Gonglin was on guard: "I want to cheat you again!"

At this moment, a loud thunder rolled in the sky, everyone was startled, and then their faces showed joy.

Rain clouds had gathered in the sky, and soon there were several dull thunders, and raindrops splashed down.

"It's raining!"

Zhang Dun was so excited that he forgot about the wine and catfish. He jumped into the rain, stretched out his hands and shouted: "It's finally raining!"

Zhang Dun was not the only one who was equally excited. The residents of Bianjing City poured out of the door one after another, crowded around the door, and pulled the children who wanted to jump into the ground. Their faces were full of joy: "It's raining!"

Zhao Xu was testing a box with a small key sent by the Ordnance Supervisor. When he heard the thunder, he stopped, carried the box out of the side hall, and came to the corridor.

As the rain fell, the stone steps in front of the temple were covered with wet spots in an instant, and then merged into a thin water surface reflecting the dark blue light, with countless water droplets jumping brightly on it.

Water drops began to drip from the glazed tile roof, and soon they formed a curtain of water, just like the tears flowing from Zhao Xu's eyes involuntarily: "It's raining..."

Wang Anshi was writing a dictionary when he was interrupted by the sound of a sudden thunderstorm.

He picked up his pen and listened attentively for a while, then smiled and added the last sentence to his notice, then put down his pen and pushed open the window of the study, allowing the moisture to be brought into the small study by the draft.

It's raining.

…

The bell in the bell tower rang faintly ten times, and Bian Guan was already fast asleep.

Shi Wei rested her head on Su You's shoulder: "Brother Xiaoyou, are you leaving Beijing again?"

Su You said: "It is inevitable for officials to travel all over the world."

Shi Wei tightened Su You's neck: "I really can't let you go."

Su You was a little dazed: "What do you mean? Of course we are together, and there is Hachigong and Bian Gu."

Shi Wei blushed: "No, at least not now, at least we have to wait a few more months."

Su You asked: "Is it Charity, or is Tianshi Mansion unable to leave for a while?"
Chapter completed!