Su Zhengming laughed when he heard Lin Yuan's words, turned around and pointed at Lu Xue and said: "Our Xiaoxue used to learn lasers, and then she felt that the relevant theories of lasers were relatively perfect, and there would be no big breakthroughs, and if she wanted to improve her performance, she could only rely on materials, so she transferred to materials, and followed me to graduate school in the past two years. ”

I saw Lu Xue with her head down, her eyes were red, she pursed her lips and didn't speak, Su Zhengming couldn't help but smile when she saw her appearance, and said, "Eh, you're still in a mood, isn't it just about you?" Why is this the way it looks? Who is not scolded for engaging in science? Okay, don't be distracted, let's go to dinner together, Master has a treat today, let's go. ”

Lu Xue raised her head and followed Su Zhengming out, Lin Yuan found that a large canteen had been built here, and there were different windows in the canteen, except for the lack of credit card machines that are common in modern universities, everything else was exactly the same as in the school.

The three of them sat down after eating, and Lin Yuan had time to pour out a stomach of questions, Lin Yuan first asked, "What's going on with those boys and girls?" How did they become students? Also, they came to see the drawing of monocrystalline silicon, which in our time was something that was only studied at universities. ”

Su Zhengming said: "This is the result of our discussion with several experts, the quality of the people in this era is too poor, too lack of talents, you originally asked people to teach people, those are all literacy nature, scientific research is not needed at all, so we discussed with the political commissar of Han and built a school in the research and development center." ”

Lin Yuan asked, "School?" Are all the children who have no foundation enrolled? ”

Su Zhengming nodded and said, "That's right, they didn't know a single big character when they came, and some of them couldn't count, but now it's been almost two years, and they have been able to study some college courses." ”

Lin Yuan asked in surprise, "What?" That's too fast, isn't it? ”

Su Zhengming said: "What's so fast about this, if you think about the education of our times, it takes a person from primary school to college for 16 years, but if you think about it, how much time you have really spent in these 16 years really studying, you don't listen to classes in class, and you copy your homework at the same table, so there is not much time for studying at all." ”

"But I'm different here, my students only have one thing, that is, to learn, first of all, to teach them literacy, because we are in the Chinese environment, so the speed of literacy is very fast, and then mathematics, physics, chemistry, etc., what I need is materials science talents, people who can help me, so I only teach them things related to materials, as for those deeper knowledge, I leave it to themselves, if they feel the need, they can learn by themselves."

Lin Yuan asked, "You said that you are studying every day here, so are the students suffering?" ”

Su Zhengming smiled and said: "What's unbearable, this is my educational philosophy - Hell Education Method, I think that people's potential is unlimited, so people can do a lot of things, the reason why people are lazy is because they have not been forced to a dead end, these students are all fourteen or fifteen years old, they are all orphans without fathers and mothers, those boys work for others, because they are young and bullied everywhere, you also know how girls are." ”

"But I gathered them together and gave them food and clothes, and no one has beaten or bullied them yet, can they not study hard?"

Lin Yuan thought to himself: "No wonder they can learn things so quickly. So he asked again: "When I first came, I heard Lu Xue say that if I don't obey, I won't be able to eat, what's going on?" ”

Su Zhengming said: "People, there is always inertia, even if they have experienced hardship, they are easy to slack off in a comfortable environment, so I use this method, those who are disobedient and do not study hard are not allowed to eat!" ”

Lin Yuan thought to himself: "This Su Lao really has a personality, but this kind of education method also works in this era, in our era, who is willing to send a child to such a school?" Lin Yuan asked again, "What about other experts?" Do they also use this method to educate students? ”

Su Zhengming said: "Then I don't know the way, in short, one person and one method, this is a large-scale test field, our group of people have their own educational philosophy, but in our time, it is impossible to follow our temperament, this time it's okay, you can do what you want." ”

Lin Yuan asked, "Why don't I know about these things?" ”

Su Zhengming said with a smile: "We have done a lot of things, how can you know everything about it, so it's normal for you to not know the way." ”

Lin Yuan nodded, and at this time he accidentally saw Lu Xue, Lu Xue had just reprimanded Lin Yuan, and at this time he was so ashamed that he only cared about eating with his head down, and he didn't dare to look up at Lin Yuan, Lin Yuan smiled and said, "Teacher Lu, are you quite strict?" ”

Lu Xue's face turned red when she said this, she quickly shook her head and argued: "No, no, I'm not usually like that, it's all Teacher Su, he told me to be strict as a teacher, otherwise students won't be afraid of me." ”

The three of them laughed when they said this, and Lin Yuan said, "In this way, you can tell me about the laser." ”

Lu Xue nodded and said: "Laser is the light emitted by stimulated radiation, which is to talk about the luminescence mechanism of atoms, according to modern atomic theory, atoms have a stable state with the lowest energy, which we call the ground state, and at the same time there are many states with higher energy in atoms, which we call excited states, when atoms jump from high energy levels to low energy levels, they will release energy, and this energy is expressed in the form of light, which is light radiation." ”

"Stimulated radiation is the radiation produced by the object under external stimulation, that is, our laser, this stimulation is an electric current stimulus, but the object that can produce the laser needs to meet certain conditions, that is, the commonly known 'substance that can achieve the reversal of the number of particles', simply put, it can produce a large intensity of radiation under very small excitation conditions."

"There are some such substances, such as ruby, rubidium glass, etc., but at this time the light radiation generated is chaotic and irregular, we must let it radiate in one direction, so as to produce laser, so we need a special structure - optical resonator, through this structure, so that the light radiation is in the same direction, the laser is formed, plus the mode selection and other techniques, the laser can meet the requirements of use."

Lin Yuan smiled: "I know all this, can you say something that I don't know, for example, what does it take to make a laser?" ”

Lu Xue blushed at Lin Yuan's words, and said, "I haven't designed a laser either, or you should go to Teacher Qin." ”

Lin Yuan asked, "Teacher Qin?" Professor Qin Peng? ”

Lu Xue hurriedly said: "Yes, that's right, it's Professor Qin Peng, the top expert in lasers in my country, I heard that they came on the ship this time to test the sea-based laser anti-missile platform, do you know the way?" If the laser is used as a lethal weapon on the battlefield, it is actually very difficult, because the problem of dissipation in the propagation process must be solved. ”