Chapter 1967 Cavitation Effect
After the song "Hasayaqi" was sung, the music class was over. None of the children had ever seen the blue double-breasted uniform and the white hat military uniform, and they immediately Qin Haifeng gathered around, chattering and asking questions.
"Uncle Hainan!" Zhou Zhi came over to greet Qin Haifeng, and still used the title he used when he was a child: "Except for the addition of the word "Sichuan" between the eyebrows, you have not changed at all from the photos you took when you were young!"
“You kid!” Qin Haifeng was extremely happy to hear Zhou Zhi calling him this, and suddenly slapped Zhou Zhi on his butt. This was the affectionate expression of elder Jiachuan when he saw the younger one. The action was originally not suitable for a thoughtful person in his twenties, but he used it naturally at this time, and then took off his military cap: "Look! Your father's white head is now running away from your uncle." My head is up!”
“It’s normal to overuse your brain when doing scientific research.” Zhou Zhi put down the guitar: “It’s too noisy here. Let’s go to the study and have a detailed chat. These two are...”
"This is Captain Zhou of the Satellite Base Security Group. With you, this is the driver, Xiao Wang." Tu Liangzhi introduced at the side: "I asked your aunt to prepare a meal!"
"Trouble. Uncle Tu!" Zhou Zhi nodded and immediately expressed his enthusiasm to Captain Zhou: "Captain Zhou, welcome, look at the patriotism and science and technology education I provide to the children. It's been delivered. Please see if you can arrange it for us. Want to visit the satellite launch base? You don’t even have to go into the control room or wait for the rocket to launch. Let’s just take a look at the launch pad. "This is a trivial matter," Captain Zhou said with a smile. The next generation! It is also a mission of our base. I will go back and check the launch mission. I will contact you when the time comes. If you want to see it, we will take a look at it. "
"Thank you, thank you very much. "Zhou Zhi quickly thanked him.
After coming out of the classroom, Captain Zhou excused himself and Xiao Wang to help in the kitchen and pick up things from the car, so he stopped following.
Zhou Zhi and Mai Xiaomiao took Qin Haifeng up to the second floor and came to their large study room.
“You are really good at getting things done.” Qin Haifeng thought it was funny when he remembered that he had just contacted Zhou Zhi to visit the launch base: “The black-tipped snake climbs the pole, it is twisted and cunning!”
"There's no way. This school actually doesn't even have a staff. It's a love primary school. You have to figure out everything by yourself." Zhou Zhi made tea for Qin Haifeng: "Even if Captain Zhou doesn't look at the monk's face, he still has to do it." Look at the face of your big Buddha!"
"This tea is really good, is it from Liangshan?" Qin Haifeng praised the tea and then saw the couplet on the wall: "The book will be written in a hurry. Read it piecemeal, and the flowers will bloom in time. Your handwriting is good, and the couplets are also good. Where did you copy them? "
"Uncle Hainan, you look down on people. I wrote it myself, okay?" Zhou Zhi argued. .
"Hahahaha, don't dare. Your navy uncle can't do this." Qin Haifeng looked at the couplet with admiration: "Take it off later and take it away with me. I remember that your fourth cousin's handwriting is very good."
"That's right, my calligraphy was taught by my fourth cousin." Zhou Zhi smiled and said: "If Uncle Hai likes it, feel free to take it away. By the way. , Have you returned to Sichuan this time to visit your hometown?”
“The changes are indeed great, but it’s a pity that they come and go so quickly.” Qin Haifeng looked at Zhou Zhi with a somewhat apologetic expression. "My mother is unwilling to go to Qingdao with me even to death, saying that she is used to living in the Wu Family Courtyard in Baimichang. Thank you so much for your family, and My mother's family took good care of my mother on Saturday."
"If Aunt Liu is not willing to go to Qingdao, then just stay in Jiachuan. Elderly people usually have a hard time leaving their hometown." Zhou Zhi said with a smile. When life was difficult, Aunt Liu helped my aunt and my father a lot. Now that life is better, it is easier to take care of them. Uncle Hainan, you can just let go. Heart, Aunt Liu and her aunt and sisters live together, which is comfortable and happy."
In fact, this title is strange in detail. Zhou Zhi calls Qin Haifeng uncle, and calls Qin Haifeng his mother. The main reason for calling him aunt is that Zhou Zhi's father was raised by his sister. Zhou Zhi calls aunt Liu from his aunt's side, and Guan Qin Haifeng calls him uncle from his father's side. After chatting for a while about the daily life of his hometown, Zhou Zhi asked: "Uncle, what kind of business trip are you coming to Liangshan this time? I was shocked when I heard that the navy came to Liangshan on a business trip. Later, Xiaomiao said that maybe there was someone here Long wave base stations or radars may be related to satellites, I wonder?”
"You all guessed wrong. This time, I actually came to see you." Qin Haifeng said: "But looking at your posture in the room, I am a little unsure... ”
“It does look a bit rough here. ” Zhou Zhi said: "There are two computers and two laptops in total. But ours is just an information processing terminal, mainly used for remote office work. If you want to ask Xiaozhi, it is at the Shudu Clover Group headquarters."
"Xiaozhi?" Qin Haifeng was stunned.
“Oh, Xiaozhi is the nickname we gave to the cell-like neuron network computing system.” Mai Xiaomiao said: “Jiuzi asked us to develop a program to use the KouKou game users to learn to play backgammon online. This is the ID used.”
"So that's it." Qin Haifeng smiled: "There are many projects in the country that require computing power, but you use it to train backgammon. Isn't it too extravagant?"
"It is mainly used to verify the machine. The possibility of learning,” Zhou Zhi said. : "The rules of backgammon are simple, there are many people playing it, and the learning samples are very rich. It is a good application scenario for verification."
"It sounds true." Qin Haifeng nodded: "To say that the rules are simple, The rules of Go are not simpler "
"The rules of Go are indeed simpler, but the tactics are too complicated," Zhou Zhi said: "It will take longer for Xiaozhi to learn advanced chess skills, unlike backgammon. See results in a short period of time "
"You are thoughtful." Qin Haifeng nodded: "Xiao Miao is not only good at mathematics, but also has rich knowledge of physics. He also knows that our navy also has long-wave radar and long-wave communication base stations in the mainland."
"Computer technology and communication technology both belong to information technology and are inseparable." Mai Xiaomiao thinks this is common sense.
“Then do you know about the cavitation effect?”
Zhou Zhi and Mai Xiaomiao looked at each other and shook their heads.
“It’s like this.” Qin Haifeng explained: “When the liquid medium suffers local continuity damage, such as local pressure reduction, or in other words, when the pressure at a certain point in the liquid drops to a certain critical pressure The liquid vaporizes when: "
"For example, if you shoot an arrow in water, if the arrow is fast enough. If this happens, the water pressure in the part in contact with the surface of the arrow will decrease. When the pressure reaches a critical point, the water will vaporize, first forming microscopic and then macroscopic small bubbles on the surface of the arrow. Inside or at the interface between water and arrows, a larger cavity of steam and gas is formed, which is a cavitation. ”
"The process of generation, development and collapse of cavitation bubbles is called cavitation phenomenon. The existence of gas nuclei in the liquid, that is, tiny bubbles and local pressure reduction, are two necessary conditions for the occurrence of cavitation."
Pressure Changes will change the change of boiling point. This is junior high school physics knowledge. Combining this, the cavitation effect is not difficult to understand. Zhou Zhi and Mai Xiaomiao both nodded, indicating that they understood.