Chapter 182: Lighting the Carbon Arc Lamp

At the request of Xiaohu and Xiaoqing, their family did not go to the cafeteria to eat tonight, and Zhang Zhimu personally cooked a meal for them. When making that egg drop soup, Zhang Zhimu asked Xiaoqing to cut some garlic seedlings on her windowsill with scissors, and Zhang Zhimu chopped the garlic seedlings into minced pieces and sprinkled them on top of the soup. This made Xiaoqing and Xiaohu feel very accomplished, they looked at the garlic seedlings that grew up, not only beautiful, but also edible, which made the young lady and brother say that today's soup was delicious.

Zhang Zhimu knew that this time was too busy, and the two children just wanted to have a meal with him, and they were already very dependent on themselves now. However, hearing the child say that this soup was delicious, Zhang Zhimu thought of MSG. I've read the information before, this thing is very easy to make, as long as there is wheat bran and sodium hydroxide hydrochloride, these things can be solved in the kiln. It's a good thing. Zhang Zhimu patted his head and said, "Oh, why didn't I think of it?" ”

Huang Yukun and the child, who were eating together, were stunned by Zhang Zhimu, and Huang Yukun asked, "What do you remember again?" It's like going crazy. ”

Xiaoqing and Xiaohu followed the giggling straight music. Zhang Zhimu said: "I suddenly thought of something that can make this soup several times fresher, and we can easily make this thing in the kiln, do you think I can not go crazy?" ”

Xiaoqing and Xiaohu were even happier, and Huang Yukun said: "It's so fresh, it's not fresh to lose your teeth." ”

Zhang Zhimu said: "With this thing, ordinary dishes will become delicious when you put them in a little bit." Do you think this thing is worth a little silver? ”

Huang Yukun looked at Zhang Zhimu and thought about getting rich again, and said, "Oh, you just don't have enough money." I feel fragrant about everything I eat, I don't need what you said, I think Xiaoqing and Xiaohu eat very fragrant. ”

In fact, Zhang Zhimu knows that people are hungry now, and no one has complained about the bad food for so long. Nowadays, most people really feel that everything they eat is fragrant. However, Zhang Zhimu feels that this will not affect the sales of MSG in the future. The cost of MSG produced by this method is not low, and it cannot be a daily product for the general public. These things still have to earn the silver of the rich, in the words of the previous life, the silver of the high-end people.

Zhang Zhimu came to the office early in the morning, and the five propeller workers were already waiting for him.

Zhang Zhimu asked them to go out and bring in a pot of loess in a basin, these people didn't know what Zhang Zhimu was going to do at this time, but they still did it. Zhang Zhimu asked Yang Yulin to pour a little hot water again, because the loess was already frozen. When the loess was scalded by the water, Zhang Zhimu began to mix the mud, and after beating the mud repeatedly, Zhang Zhimu used the mud to pinch out the shape of a propeller according to his impression. Then he pointed to the propeller and told these people which are the blades, hubs, pressure surfaces, and suction surfaces of the propellers, and told them that the blades should be tilted back at an angle of fifteen degrees, which is also what Zhang Zhimu heard in the shipyard. This leaf surface is a spiral curved surface, and when the leaf surface is rotated, the water orientation angle starts from the root of the leaf and gradually decreases outward.

These people didn't care whether the mud was sticky or not, and they all gathered around to fiddle with the propeller model made of mud.

Zhang Zhimu came back after washing his hands, took out a copy of the task book he wrote yesterday, and told them: "This is the requirement of two propellers, one for a big boat and one for a small boat. You will first cast it in steel, and then we will use bronze to make the propeller for the sea. ”

Zhang Zhimu determined the propeller diameter according to the ship's waterline, because the larger the propeller diameter, the higher the efficiency. Secondly, the size of the fit between the blade hub and the propeller shaft of the boat is required. The rest of Zhang Zhimu can't be given, so these skilled craftsmen can only solve it themselves. Zhang Zhimu's first requirement is to solve the problem of whether the propeller is there, and then slowly improve it, and then solve the problem of whether it is good or not.

When these people were leaving, they wanted to take the muddy propeller away, Zhang Zhimu of course agreed, and told them: "That's all I can tell you about the propeller, and it's up to you to do the rest." ”

As soon as these people left with Zhang Zhimu's clay propellers, Li Yunhe came in with a bag of things with a dark face. Zhang Zhimu smiled and asked, "Why is your face darker than Bao Gong today?" ”

Li Yunhe's white teeth turned whiter with a smile, and said, "Isn't this what you pressed the graphite rod for!" ”

Zhang Zhimu said: "You won't pay attention, you can get it in your face." ”

Li Yunhe didn't explain either, and said, "Let's see if it's qualified, if it's qualified, I'll let them continue to press the barrel." ”

Zhang Zhimu picked up two pencil-thick carbon rods and touched each other, the carbon rods sounded a crisp sound, Zhang Zhimu said: "It's almost over, let's go give it a try." ”

Zhang Zhimu asked Li Yunhe to borrow a few eyes from the gas welder, came to their electronic test workshop in Yangchang, and asked them to take four batteries and connect them in series with finger-thick multi-strand copper wires, and then use two copper wires to wrap them around the graphite electrode rod respectively, and connect an inductor with thick cable wrapped many circles between the positive electrode of the battery and the graphite electrode, and then fix the electrode rod on two movable racks. All ready, Zhang Zhimu told people who did not wear glasses: "Don't use your eyes for a while, just look at the arc light coming out of the electrodes." ”

Zhang Zhimu put on the glasses for gas welding, slowly pushed the rack with the electrode rod, so that the tip of the electrode slowly approached, when the tips of the two electrodes touched together, the electrode rod began to sizzle the arc light, Zhang Zhimu quickly and slowly left the two electrodes a little, in everyone's exclamation, between the two electrodes pulled out a dazzling arc light, illuminating the whole room, through the glass of the room, even the outside was illuminated.

Zhang Zhimu saw that the test was successful, so he completely removed the two electrodes, because the current electric energy of the battery cannot support such a large current for too long to work, and the battery will be scrapped due to overdischarge after a long time.

Zhang Zhimu took off his glasses and asked Li Yunhe: "How about making a sun come out, what I said." ”

Li Yunhe hadn't recovered from the shock, and said incoherently: "It's the sun, it's too bright." It's the sun, brighter than the sun in the house. ”

"When their power plant is ready to provide continuous power, we will build a lighthouse on top of the kiln so that people can see it from miles away," Zhang said. ”

After Li Yunhe waited for the electrodes to cool down, he touched the electrodes with his hand and said, "You can install one of these things on the ship, so that it will be no problem to sail at night." ”

Zhang Zhimu said: "Last time I asked you to make the largest lampshade for the ship, with that lampshade as a searchlight, it can be illuminated clearly for several miles, and with our binoculars, let alone sailing at night, no one can fight at night." ”

Li Yunhe looked at it and found a problem, saying, "This thing will burn the electrode, right?" You see, the tip of this electrode will burn out in a moment. ”

Zhang Zhimuhe said: "This carbon arc lamp has its weakness, that is, the electrode rod will continue to ablate, so if you want to be practical, you must also have a mechanism to adjust the distance of the ablation electrode to ensure the distance between the electrode rods." In addition, the gas produced by this thing when ignited is poisonous, so you can't light it in the room for a long time. The smoke and heat he emitted had to be dissipated at any time. This requires some supporting things to be done so that we can use this carbon arc lamp. ”

Li Yunhe asked again: "What are you doing with those thick cables?" ”

Zhang Zhimu said: "When the two electrodes suddenly come into contact, the inrush current of the short circuit is too large, and the use of an inductor is to reduce the damage of this impulse current." ”

After Zhang Zhimu and Li Yunhe studied what else were needed for practical carbon arc lamps, Zhang Zhimu handed over the task of making arc lamps to Li Yunhe.

After trying the arc lamp, Zhang Zhimu came to Zhang Bingchen's health center again, and he was still not worried about what Li Yunhe said about smallpox.

This time, when Zhang Zhimu Dao Health Center was in the hospital, Zhang Bingchen was treating people, so Zhang Zhimu found a place to sit down. After Zhang Bingchen finished treating the patient, he came to Zhang Zhimu and said, "I heard that you came here last time when I was giving a lecture, and I haven't had time to go to you." ”

Zhang Zhimu said: "I think you are too busy, so I'll make a long story short." I heard Li Yunhe say that smallpox is going on in Beijing, should we also pay attention to it, if smallpox comes, it will spread very quickly. ”

Zhang Bingchen sighed and said, "Alas, this smallpox is there every year, and there is no way." ”

Seeing Zhang Bingchen's helpless look, Zhang Zhimu asked: "Isn't there someone who will use the method of pox to prevent it?" ”

Zhang Bingchen said: "The method of planting pox is not difficult, just use the pus from the infected person to plant it on the person. However, this method is very dangerous, some people will die of smallpox when they are planted, and those who have pox are easy to infect others. Therefore, it is difficult for ordinary people to accept such a thing as planting beans. ”

Zhang Zhimu took off his cotton clothes, rolled up his sleeves and exposed his arms, and let Zhang Bingchen see it.

Zhang Bingchen saw a circular scar on Zhang Zhimu's arm, and Zhang Bingchen said, "There is a scar." ”

Zhang Zhimu put down his sleeves, put on a cotton coat again, and said, "I'll tell you, this is a kind of cowpox." It's very safe. Do you know why you don't have smallpox anymore after you get pox? ”

Zhang Bingchen shook his head and said, "I don't know." ”

Zhang Zhimu said: "Let me tell you, if you have smallpox, you are infected with the smallpox virus, and if you have the smallpox virus and do not die, you will have produced a thing that resists smallpox, called antibodies. There are many types of antibodies in people. It is this anti-smallpox antibody that kills the smallpox virus in people and makes people sick. Pox is the infection of a person with a small amount of the virus, so that the body produces antibodies. Those who are completely infected with a little pox are still a minority. ”

Zhang Bingchen said: "But no one wants to be that minority, besides, it is impossible for all people to have pox, where to find so much smallpox pus?" ”

Zhang Zhimu said with a smile: "I'm here to tell you a good way, a way that is not dangerous and easy to do." ”

Zhang Bingchen couldn't believe it, because no one was not worried about smallpox now, he couldn't believe that there was such a way, but he felt that Zhang Zhimu was not a liar.

Zhang Zhimu understood when he saw Zhang Bingchen's eyes, he couldn't believe it, and said, "I know you can't believe it, let me tell you." I have cowpox. Cowpox is not contagious from person to person, and there is little harm to people. However, the antibodies produced by his species in humans are almost the same as those produced by smallpox antibodies, which can kill the smallpox virus. ”

When Zhang Bingchen heard Zhang Zhimu say this, he had already stood up and asked, "Mr. Zhang, is what you said true?" ”

Zhang Zhimu smiled and asked, "Have you heard me tell a lie?" ”

Zhang Bingchen was still excited, and said, "Mr. Zhang, do you know what you are talking about? ”

Zhang Zhimu said calmly: "I know, this is the way for human beings to completely defeat smallpox. ”

Zhang Bingchen didn't expect that Zhang Zhimu would say so calmly about such a big matter, which made him a little speechless for a while.

After calming down, Zhang Bingchen said: "Mr. Zhang, if what you said is true, do you know how many lives can be saved?" ”

Zhang Zhimu said: "Yes." That's what I'm here to tell you today, so you have a lot of work to do. You first have to look for the sick cows that have pox, then find a closed place, and plant more cows with pox, and then plant everyone in the kiln with my kind of pox. ”

Zhang Bingchen said excitedly: "I'll do this now." ”

Zhang Zhimu said: "Don't get excited, I still have something to tell you." You know we're recruiting students and want to start a school. This time, I also want to hold a medical class, of course, you will give lectures to everyone at that time, but I also want to hire some famous doctors to teach you with a high salary. What do you think of this? ”

When Zhang Bingchen heard this, he said, "This is great. But you have to tell my master about hiring a famous doctor, because he has a lot of people in this area. But if we were to get the smallpox out, the famous doctors would be vying to give lectures. ”

Zhang Zhimu said: "Okay. I'll leave the matter to you to deal with smallpox. Employing people, using silver, you can just say it. ”

Zhang Bingchen happily said with both hands: "Don't worry, Mr. Zhang." I'll do it. ”

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