Shangguan Rui, who had been silent, suddenly interjected: "Uncle Ying, the celestial observatory cast with glass should be more than just able to observe celestial phenomena, right?" He picked up a brass pipe and weighed it. The tube was a little longer, and if you wanted to get on the two glass lenses, you would have to cut off about three inches and five minutes. But it's also very delicate; At the moment, it is only a little more than two catties, and then cut off, but it is only seven or eight taels per catty, and it is easy to carry it with you. It can be seen that Tian Daren has put a lot of thought into it. ”

Tian Xiu was stunned for a moment. That sounds too harsh! The Ministry of Industry recruited thirty or forty master craftsmen and nearly 100 apprentices, sent five or six officials to dispatch and supervise at any time, and spent nearly 10,000 yuan of money and grain, and only got 30 sets of copper tubes and copper caps and 20 glass lenses in total; One hundred and dozens of people were busy for two months, so tired that people turned their backs and resented the sky, but in the end they didn't even touch the edge of the celestial sphere, Shang Yanshan only took two pieces of glass and casually compared them back and forth, and the problem was solved; That's it, and it's still called the Ministry of Industry to "bother"? She pursed her lips and lowered her head without saying a word. She understood that Shangguan Rui's original intention was to say a few words of praise for herself, but the good words were ugly, as if she was ridiculing herself!

Shangguan Rui's topic is not in the Ministry of Industry, and of course it is not on Tian Xiu, the Jingguan of Qipin is bigger than sesame in his eyes, and it is inferior to mung beans, so he naturally will not take care of Tian Xiu's emotions; Praising her is just a casual remark for Chen Pu's sake. He continued: "Uncle Ying, can you ask how far this celestial observatory can look?" ”

Shang Cheng is happy to answer such a simple question. He said casually, "You're not asking the right question. The celestial sphere is not about how far it can see, but how many times it can bring objects closer. Of course, it will be difficult to determine its multiples accurately at the moment. Let's say you have two lenses in your hand to form a 10×20 telescope...... Well, it's the celestial sphere. He dipped his hand in some tea, wrote down the number symbol "10×20" on several cases, and then wrote down the number "1000". "This 20 refers to the diameter of the convex mirror when the objective lens is one by one," he wrote down the word "objective lens" again, and said to Tian Xiu, "The telescope can not only be composed of convex and concave mirrors, but also two or three concave mirrors." In order to see farther and see more clearly, you can also add a metal concave lens to the mirror body......"

Tian Xiu immediately asked, "Do you know how to do this?" ”

Shang Cheng casually sketched a very rudimentary sketch of a refracting telescope on several cases, and said: "...... This is the place where a metal concave lens is placed in front of the eyepiece, as if you can see more clearly. Don't ask me what to do again; It's useless to ask again, I really don't know! That's what I remember. He turned around and asked Shangguan Rui, "Where did I talk about it just now?" ”

"Ten times twenty." Chen Pu said.

Shang Cheng nodded, picked up the topic just now, and said: "This 20 means that the diameter of the objective lens is 20 centimeters; This 10 ......" Tian Xiu opened his mouth, but finally didn't speak—what is "centimeter", and how is it determined and calculated? She quietly glanced at Chen Pu and Shangguan Rui's expressions. Both of them looked confused and confused, and seemed to be bothered by the same questions. Shangguan Rui didn't squeak; Chen Pu couldn't hold his breath and asked, "What is 'centimeter'?" ”

"This 10, it's ...... One hundredth of a meter is a centimeter! Shang Cheng was interrupted again, and he was a little impatient.

"What is 'rice'? Does it refer to length? How long is a meter, and how many feet is folded? Chen Pu asked, and he wanted to break the posture of the casserole to ask the end.

Shang Cheng rolled his eyelids and glanced at her, gritted his teeth, and said with a long breath: "Three feet in one meter!" One meter is ten centimeters, one hundred centimeters, one thousand millimeters, one million microns, one billion nanometers...... I said, "What's the use of you listening to these things?" Out of the corner of his eye, he saw Tian Xiu who was concentrating on his memory, and he was even more angry. You don't have to remember that! If the Ministry of Engineering can get the millimeter accurate, then you have the ability! "He's not talking nonsense with his mouth open to slander the Ministry of Works. There's a story to tell. The Ministry of Industry and the Ministry of War both have large workshops in Yanshan; When he pretended to supervise Yanshan, the workshop of the military department had always been obedient, and he pointed out that the east would never go west, and he would not discount the standardization of ordnance production that he had personally formulated; But the workshop of the Ministry of Industry relied on its own subordinate central enterprises, and Yan Shanwei had no direct jurisdiction over them, so he had always ignored him, and would rather not do Yan Shanwei's business than listen to his command. With such a grudge in it, he naturally won't have much affection for the Ministry of Works. When I was in Yanshan, I didn't pay much attention to the Ministry of Industry, and after returning to Beijing, I didn't mention to the people in the Ministry of Industry what to do to improve the production efficiency of the enterprise. He is a squire of the Ministry of War, and he is not a secretary of the Ministry of Industry, so why should he worry about the subordinate enterprises of the Ministry of Industry? Hey, if it weren't for the fact that the real guy was really stingy, how could the good thing of glass be smashed on the head of the Ministry of Industry?

Seeing that Shang Cheng looked a little annoyed and angry, Shangguan Rui immediately picked it out to play a round. He asked Shang Cheng: "Uncle Ying, what should I do with this 10?" "It has been a year or two since the military department vigorously promoted the use of this kind of number in the army, and he is naturally very familiar with it.

"10 is a tenfold magnification, that is, the ability to magnify an object a kilometer away by a factor of ten, which means that. With a telescope, you are actually observing something 1000 meters away from a distance of 100 meters. This 1000 means 1,000 meters! ”

Although his teaching attitude as a teacher is not very good, the comprehension level of the three "students" present is not low. They quickly combined a few pieces of glass to figure out some of the superficial truths of the telescope. Shangguan Rui also told Chen Pu that the name "telescope" is very appropriate. This is obviously suspicious of sycophancy. However, Deputy Ling Chen thought that General Shangguan's words were quite reasonable.

Tian Xiu did not participate in the conversation between the two pillar countries. She pondered and asked Shang Cheng: "When calculating the multiple of the celestial observer, is it necessary to first record the height of the object observed in the celestial observer, record the value, and then gradually move the object until its value in the human eye matches the value obtained by using the celestial observer, so that the multiple of the celestial observatory can be obtained?" If so, how can we ensure that there is no error between the calculation results of the human eye and the results of the observer? If not, how? ”

Shang Cheng laughed. Where is the need for such a cumbersome and stupid solution? He waved his hand very arrogantly and said, "The solution is very simple! The focal length of the objective lens is subtracted from the focal length of the eyepiece, and the result is a multiple of the telescope! ”

"What is focal length? How should the focal length be measured? ”

Shang Cheng immediately became dumbfounded. What is Focal Length? How can he say it. How is the focal length calculated? God knows how! He blinked, holding the tea soup that Tian Xiu offered him with both hands, and was stunned for a long time without spitting out half a word!

Fortunately, Shangguan Rui woke up, and he talked to Chen Pu lively, and he didn't forget to pay attention to Shang Cheng at any time, and when he saw that he was forced into a corner by Tian Xiu with a few words, he immediately reached out to help: "General, the telescope can be of great use in military affairs, whether it is sentry reconnaissance or troop arrangement. I have a suggestion that I should ask the Imperial Court to transfer the matter of casting the Celestial Gazetteer to the Ministry of War! It is best to directly arrange the workshop for casting this object in the Liyuan camp, and the officials, errands, and manpower associated with it must be transferred to military positions, and the things related to casting should also be carefully registered and transferred to the military department. ”

Shang Cheng secretly breathed a sigh of relief, pretended to groan for a while, nodded and said, "Makes sense." So, you write something literal, and I'll sign a name. First hand it to the military department, and if it doesn't work, hand it to the prime minister's office. I think the Ministry of War will not fail to give the two of us this face. ”

Shangguan Rui was taken aback. He really wanted to take the telescope matter to the military headquarters and the Liyuan battalion. However, he also knew very well in his heart that it was impossible to really keep the secret just by taking away the production of the telescope. If you really want to keep the telescope secret, you must also grasp the firing of glass. He calculated that he would use glass, which was so hot that he burned his hands, to arouse the thoughts of the military department and the Ministry of Industry, and then the glass would return to the military department, and the telescope would return to the Liyuan battalion, and the military department and the Liyuan battalion would be happy! As for the Ministry of Industry, do what you have to do! However, it is certainly not easy to do this. The Ministry of Industry is under so much pressure, and has smashed so much financial and material resources to burn glass, and now it has just seen an improvement, and the Ministry of Industry has jumped over to pick the fruit, and the Ministry of Industry either hates the Ministry of War to the bone, or bites the Ministry of War to death, which is simply an incredible thing. But it had nothing to do with him, he just came up with an idea and made a suggestion. All he needs is a telescope. Even if the two families are beaten and both are defeated, and the glass is returned to another family in the end, it doesn't matter. But he listened to the meaning of Shang Cheng's words, and planned to drag him out with him, and lead the military department to find the Ministry of Industry to fight in the ring. He didn't care about making trouble with Shang Cheng. Shang Yanshan is the one who looked for Yang Du and Gu to fight with Zhang Pu and Xiao Jian on the front foot, and carried the big yamen of the imperial court like the Ministry of Industry, even if he can't win, it's always okay to protect himself. The key is that Shang Cheng still plans to bring the matter to the prime minister's office, so he can't be cautious. With his honorable position, if he goes to the Prime Minister's Office, he basically only needs to bring his ears, and he probably can't even enter the chamber for slightly more important meetings, so he can only wait in the wing room for inquiries. Shang Cheng must know this, but he still has to take him to make a lot of trouble, and the taste of this is worth pondering. Could it be that Shang Cheng is hinting at himself......

Where did Shang Cheng think of it, with his casual words, Shangguan Rui had already thought of it 108,000 miles away. He saw Shangguan Rui bowing his head and muttering silently for a long time, so he said: "If you are reluctant to write, I will write it!" Although I have been disciplined and will have to think about it behind closed doors at home from tomorrow, it is not said that I cannot write a submission. I write, you ......" Speaking of this, he glanced at Chen Pu. “…… Then I'll write it, you and Chen Zhuguo have a joint name on the official document, this should be no problem, right? ”

The expression on Shangguan Rui's face remained unchanged, but his heart was sitting and judging quickly. Is Shang Cheng's sentence forcing himself to make a statement?

Chen Pu was still listening to them with a smile, but seeing that the more things were said, the more true they became, and Tian Xiu's expression became more and more ugly, so he knocked the case with the teacup and said, "Okay, okay, the joke should be stopped in moderation." "Yes, she knew that this was Shang Cheng joking with Tian Xiu. But with Shangguan Rui present, this joke may turn out to be true, and it will be boring. She also glared at Tian Xiu with annoyance: You have the heart to ask for advice, when can't you ask for advice? You have to ask for advice in front of outsiders, and then make Shang Yanshan unable to come to the stage? She said, "Whether it's called a telescope or a celestial sphere, this thing can't be made by just anyone, otherwise the Ministry of Industry wouldn't have seen anything for almost a year." General Shangguan's idea is not advisable! But it's also something that deserves to be kept secret. One by one, one is that the Ministry of Industry must strictly guard the skills of making the celestial sphere, and the other is that all the celestial spheres must be strictly recorded and recorded, and the production, supervision, storage, and use of each celestial observatory, time, place, and person are recorded one by one. ”

Shangguan Rui immediately said: "Chen Zhuguo's words are indeed more thoughtful than I thought. In my opinion, this is the right thing to do. In order to get out of the bad situation in front of him, he did not hesitate to define his idea as inappropriate. This is also telling Shang Cheng that your idea is of course even more inappropriate!

He felt that what he said was quite appropriate, but unfortunately, Shang Cheng didn't hear it at all, and he was still hiding his words.

Shang Cheng is not improper. He originally used the topic to play, and used Shangguan Rui's words to scare Tian Xiu. Now that the intimidation has been exposed, the play can't go on. He also felt that Chen Pu's suggestion was very reasonable, so he echoed Shangguan Rui and praised Chen Pu fiercely. In the end, he summed it up and said: "Without being able to change the pattern of war, it is impossible to win a war with only a few advanced weapons." Telescopes can give us certain advantages, but this advantage is not obvious and does not guarantee that we will be able to win. As a matter of fact, in the era of cold weapons, victory in wars, battles, and battles depended more on rigorous and thorough strategic planning, flexible and mobile tactical execution, serious and serious training, strict battlefield organization, high combat morale, and solid and reliable logistical support. ”

Shangguan Rui opened his mouth, and immediately closed it again vigilantly. He really wanted to ask, what does the so-called era of cold weapons mean? Since there is an era of cold weapons, is there another era of weapons, such as the era of ***? In addition, Shang Cheng mentioned the "war mode" and mentioned the "change" of the "war mode", and he very much wanted to know what kind of "change" this would be...... However, Tian Xiu's experience is in front of him, and he is reluctant to touch Shangcheng's mold at this time. Fortunately, there is also one of his deputies in this restaurant, and Chen Pu can also ask questions. He didn't believe that Princess Changsha, who liked the military the most, would turn a blind eye to these sensitive topics!

Chen Pu was indeed aware of the problems that Shangguan Rui was thinking. But she didn't want to ask. Exactly, she didn't want to ask right now. She wants to ask Shang Cheng for advice on military matters, when will she not work? However, although she didn't ask any questions herself, she was willing to help Tian Xiu. She said to Tian Xiu: "It's rare that Shang Yanshan is in a good mood, if you have anything else, hurry up and ask now!" ”

Shang Cheng was squeezed by her, so he had to look at Tian Xiu and wait for her to ask.

Tian Xiu really has something to ask. She wondered how the screw patterns on the copper pipes and caps were engraved. The Ministry of Industry is now asking the master craftsman to carve with a jade knife to carve one by one, which is not only time-consuming and time-consuming, but also prone to errors. Again, the screw pattern engraved on the copper pipe does not mean success, and the copper cap is also required; The screw pattern on the copper cap is engraved on the inner wall, which makes it even more difficult......

"Make two clamping arms, fix the copper pipe on one side and the carving knife on the other, and then carve out the screw pattern by turning the tool." Shang Cheng casually drew a sketch on the case. "It's up to you to figure out how to do it. But this will definitely come in handy. ”

The last sentence didn't need to be said by him. Tian Xiu only saw the sketch, and immediately sketched the physical scene in his heart, and immediately took the case! Although there are many details that need to be carefully considered, there is no doubt that there is indeed a solution to the problem of screw lines!

She continued to push and asked another question: "One last question!" The carving knife used today is easy to wear, and a better carving knife is not easy to obtain. ”

"If iron knives don't work, use steel knives." Shang Cheng was really a little impatient. He is not even a squire of the Ministry of War now, why is he still in charge of the affairs of the Ministry of Industry? "Carbon steel, high-speed steel or alloy steel, as long as it's steel! Now that you have coke, it shouldn't be very difficult to make steel, right? ”

"It's no problem for the Ministry of Industry to make steel, it's just that there doesn't seem to be any of these steel ...... you said" Tian Xiu wanted to speak and stopped, but looked at Shang Cheng without speaking.

Shang Cheng was so annoyed by her half-true and half-false sad appearance that he couldn't cry or laugh. He said: "When you make steel, add something else, and maybe you can make it." ”

"What's more?"

"It should be tungsten, and some other metals, such as manganese, chromium, molybdenum, etc......" Shang Cheng wrote these words on the case. Of these, he declares, only tungsten is easier to find, as tungsten ore is often associated with tin ore. Of course, the more crucial reason is that he knows that tungsten and tin are associated minerals, and he still remembers them at this time......

Tian Xiu stared at those words for a long time, and suddenly said: "Tungsten, is it a very common gray stone on tin ore?" ”

Shang Cheng said he didn't know. He had never seen tungsten ore and did not know what color tungsten ore was. All he knew was that it was difficult for this metal to melt and it was said to be more than 3,000 degrees Celsius. It is estimated that before he died of old age, he would not have a chance to see what tungsten steel looked like. Therefore, he suggested that Tian Xiu, high-speed steel and alloy steel should not be worried about the Ministry of Labor, and it is better to grasp carbon steel if there is that time. The knives made of carbon steel are casually pulled out of the screw pattern in the bronze pipe.

Tian Xiu nodded in agreement. She already knew where the tungsten ore was. It's in Xuzhou! The Ministry of Industry has several tin mines in Xuzhou, and a few days ago I went to Xuzhou to deal with the accident, and I also went to one of the tin mines, and saw those tungsten ores called "heavy stones" in the mines......

First find tungsten ore, and then smelt tungsten, as for whether high-speed steel and alloy steel can be smelted after tungsten...... Isn't there still Shang Yanshan?