Otaku Engineer in Great Tang Dynasty Chapter 1339: When will you help us mediate?

The construction process of 　　 dam is generally divided into three steps:

　　 One, interception: excavate one or several tunnels or open channels in a natural river, and then intercept the river to make the water flow downstream along the diversion tunnel or open diversion channel;

　　 2. Excavation of foundation pits: The dam must be built on a stable geological structure, so it is necessary to dig out the sediment on the river channel and dig out the dam abutments (like door frames) on both sides until the bedrock layer is exposed ;

　　3. Filling the dam body: fill the dam body according to the type of dam (concrete dam, rockfill dam, etc.) until the top is sealed;

　　 The current Bahe Dam has reached the second step. Under Li Zexuan’s order, concrete pillars wrapped in steel bars were driven into the pre-dug foundation pit, the riverbed of the Bahe River. Suddenly it was all "clang clang clang" hammering!

　　After driving the reinforced concrete column into the riverbed, the next step is to pour the lower dam with cement. In comparison, this is not difficult, so Li Zexuan looked here for two quarters of an hour and then turned to Mo The few people of Huai said, and left!

　　 When passing by the workshop, Li Zexuan's heart moved, instead of going home directly, he raised his foot and walked towards the workshop.

　　 came to the workshop and asked about Mo Lingwei's location. Li Zexuan went outside a "laboratory" in the workshop headquarters building. The door was left open, and Li Zexuan pushed the door in.

　　 I saw Mo Lingwei on the table, working on a strange-looking machine. The upper end of the machine is a cylinder with many rotating mechanisms in the middle. The rotating mechanism is also a cylinder. There are four square tables under the cylinder. There is a square hole in the middle of the table, and a spring clip is fixed on both sides of the hole.

　　 From the appearance, this is basically a modern microscope of "beggar version"! I just don't know how the image quality is!

　　 I didn’t expect this girl to have such a strong hands-on ability and so efficient in her work! You know, in this microscope, all those fine-tuning parts are fine-tuning with screws, and the workshop does not yet have a machine tool and does not have the conditions for batch processing of threads. All the screws used in it are processed by hand.

　　 Therefore, this microscope is absolutely unique, even if Mo Lingwei makes another one, she will not be able to do exactly the same.

　　 This also shows that although one microscope has been built, it cannot be mass-produced.

　　Looking at the embryonic microscope on the table, Li Zexuan couldn't help but say: "Miss Mo, is this a microscope?"

　　 "Ah~~!"

　　 Mo Lingwei was concentrating on adjusting the microscope, when she heard the sound behind her suddenly, she screamed, she almost didn't get scared to death!

　　 "Ah! The head of the mountain...you...you...how do you walk without a sound? Also, why don't you knock on the door? It scares me to death!"

　　 Mo Lingwei turned around and saw that the person who made the noise was Li Zexuan. She rolled her eyes and said strangely.

　　 Li Zexuan said innocently, "Miss Mo, this door is still open, which door do I knock? Also, who said I’m silent when I walk, and I didn’t deliberately control my feet. Focus, so I didn’t hear it!"

　　 Mo Lingwei proudly "snorted", then bypassing the topic, replied: "This microscope has basically been assembled according to what you said, Shan Chang. At present, it can indeed see some small things. However, there are still two problems, which I don’t understand!"

　　Li Zexuan curiously asked: "What's the problem?"

　　 It stands to reason that Mo Lingwei's practical ability in engineering is unmatched in the entire Yanhuang Academy, so Li Zexuan is also very curious about the problems she encountered!

　　"First of all, there is the problem of light source. Because the distance between the microscope objective and the observed object is very small, it is difficult for light to shine on the observed object, so the image seen through the eyepiece will be very dark and difficult to distinguish;

　　Second, what is the point of building a microscope so much? Is it just to see some small things clearly? But if you want to see those tiny things, just use a magnifying glass, so why bother? "

　　 Mo Lingwei frowned, very puzzled.

　　 I have to say that this girl’s optical attainments can definitely be regarded as entering the room. Now I am communicating with Li Zexuan and inadvertently said some "professional terminology", I guess I can’t understand it from a personal point of view, and I am so strong!

　　 Li Zexuan smiled, and replied: "Miss Mo, the first problem you found is not without a solution! First, you can use a set of fairy mirrors to lighten the sun outside the house or the candle light inside the house. Reflected on the object; secondly, we can create a light source directly under the stage carrying the observed object!"

　　"Making a light source? How to make a light source? Don’t you want to put a candle underneath Shanchang? No, the candle will blacken the lens!"

　　 Mo Lingwei said quickly.

　　 Li Zexuan said a little bit amused: "Who said I would use candles as a light source? Don't worry, the light source I mentioned will never produce any smoke when it emits light, and the light it emits is brighter than the light of a candle. Many times!"

　　 Mo Lingwei said strangely: "There is no smoke and dust? Don’t you need to burn the light source, Shan Chang, you don’t need to burn? But how can there be anything in this world that can shine without burning? Shan Chang, please take out this light source for me to see. Look!"

　　 At this moment, Mo Lingwei's interest in Li Zexuan's light source is far greater than the microscope itself.

　　 Li Zexuan touched his nose, coughed dryly, and said, "Ahem! Miss Mo, this kind of light source has not been made yet, so you should use the first method I said now!"

　　 The light source he said is actually a light bulb. Although he can't get the key material of the light bulb-tungsten wire, he can use other materials instead, such as carbonized bamboo wire!

　　 In 1854, Henry Goebbels used a charred bamboo filament, which was placed under a vacuum glass bottle to energize and glow. His invention today seems to be the first incandescent lamp with practical utility. The bulb he tested at that time had been able to last for four hundred hours, but later Edison's incandescent lamp made of tungsten filaments only cared about the lifespan of about 1,000 hours.

　　 So before finding metal tungsten, it is a very good choice to replace tungsten wire with carbonized bamboo wire!

　　 Mo Lingwei listened to Li Zexuan "blowing" this kind of light source for so long, but at the end she came up with the phrase "I haven't done it yet". She usually respects Li Zexuan very much, and can't help Li Zexuan at this moment. Rolled a big eye, and if she changed her mind, she would just start spraying: If you didn't make it, you said a fart to the old lady!

　　"...Shanchang, what about the second question?"

　　 Mo Lingwei took a deep breath, resisting the urge to curse, said.

　　 Li Zexuan smiled awkwardly, and said: "As for the second question, I actually asked Miss Mo to make a microscope to observe even smaller objects. It is difficult to see clearly with a magnifying glass alone!"

　　 Mo Lingwei wondered: "A smaller object? What is that? Is it that molecules or atoms can't be made?"

　　 Now in the textbooks of "Physics" or "Chemistry" of Yanhuang Academy, there are only introductions about molecules and atoms, so it is not surprising that Mo Lingwei can know molecules and atoms!

　　 just... this girl really dare to say that if you want to see atoms with a microscope, this requirement is too high!

　　 First of all, it is necessary to clarify that the scale of atoms is about 0.1 nanometer (nm), while the general optical microscope, because the wavelength of the visible light source is distributed in 400-700 nanometers, is limited by the diffraction limit. Hundred nanometers. So if you want to see atoms with a microscope, you must use a super-resolution electron microscope.

　　 Judging from the current industrial base of Datang, let alone more than ten years, even if it is given to Datang for a hundred years, it is estimated that the technology has not developed to that level!

　　"Miss Mo was joking, I was talking about smaller objects, but not atoms. Oh, by the way, Miss Mo, have you ever calculated the magnification of this microscope?"

　　 Li Zexuan suddenly thought of a very crucial question, so he asked.

　　Mo Lingwei thought for a while, and replied: "I roughly calculated that the magnification of this microscope is about 400 times!"

　　 Li Zexuan nodded his head very satisfied when he heard the words. The world’s first super-magnification microscope made by Levin Hooke in the previous life has a magnification of 270 times. Mo Lingwei has done this completely. It surpassed Levin Hook's two hundred and seventy times!

　　 "Haha! Very good! Four hundred times, it should barely work!"

　　 Li Zexuan laughed, and then pretended to be mysterious: "Miss Mo, please follow the method I said before, and then improve the microscope, then I will show you something good!"

　　 Mo Lingwei was very curious, and said: "Mountain long, what good thing is it?"

　　 "Hey! This is temporarily confidential!"

　　 Li Zexuan chuckled and refused to answer.

　　 Mo Lingwei curled his lips very dissatisfied, and then changed a pitiful face, saying: "Shanchang, look at me as a girl. I don’t learn poetry and etiquette, but work for you every day in the workshop. , I don’t even charge your wages, am I easy to me? You still treat me like this~IndoMTL.com~ I don’t know how to pity you! Humph!"

　　 Li Zexuan is an agitated spirit. He secretly said that this girl is really a savage dramatist. It is estimated that only Yan Shaoning can surrender. He hurriedly waved his hand and said: "Cough! Girl Mo, about what I want to show you in a few days, What I said now is just for nothing, because I haven’t made that thing yet! But this microscope can make it, you really contributed to it, but I am not a stingy person, and you will definitely be satisfied with the benefits that will be given to you. Of!"

　　 Mo Lingwei's eyes lit up, and she suddenly became energetic. She hurriedly asked: "What's the benefit? Shan Chang, can you talk about it?"

　　Li Zexuan smiled and said, "Well, this is the benefit, just to help you match up with Yan Shaoning! How? How is this benefit?"

　　 "Yeah!"

　　 Mo Lingwei made a rare red face, and she groaned: "Who...who is going to marry him... Shan Chang, when will you help us matchmaking?"

　　 "Huh?"

　　 Li Zexuan looked dazed, and almost didn't turn this turn, "Ahem! As soon as possible! I will bring this up to your father and Uncle Yan as soon as possible! Well...you are busy first, I have something to do, so let’s go ahead. Gone!"

　　 Li Zexuan drove off quickly, he was afraid that if he stayed with this girl a little longer, his head would become abnormal!

　　…………………………

　　

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