I Have a Little Black Hole

While listening to Kuafu's brief introduction and flipping through the catalog, Lei Tiantang sometimes thinks that if only he had the same learning speed as Kuafu's, Kuafu might only take a few hours at most. You can complete the study in an hour, and you need to study for a month or two when it is your turn. This is only possible when you are in a state of unforgettable and high IQ. If it is the state of salted fish in the past, it is estimated that learning You will never learn.

You should have seen the Iron Man series of movies, right? You said that the device on the chest of the local tyrant is a nuclear fusion device? Lei Tiantang asked Kuafu while reading the information.

Boss, of course I have seen it, that device must be a nuclear fusion reactor, whether it is thermonuclear fusion or the legendary cold nuclear fusion, I don't know. If it is thermonuclear fusion, I want to make a nuclear fusion reactor. It's so small, I guess it will take a very long time for the development speed of the boss to be as fast as you are now.

The most likely thing is cold nuclear fusion, otherwise it is difficult to explain its reaction, but the specific principle is not known for the time being!

Is it too early for the boss to think about that question now? I think it's better for you to study it step by step. After all, we are still using fission reactors. If you hadn't found two underground rivers to cool down, I think we haven't even solved the problem with electricity.

So first of all, we have to build a nuclear fusion reactor that can be used normally. It is not the kind of reaction that can be completed in a few hundred seconds in the laboratory. I think it will be better to complete this step first and then consider the following things! Kwafu suggested with a smile.

That's natural! I didn't even think about eating one bite to become a fat man! I just asked casually, Kuafu, why are you so fond of preaching now? What are you studying recently? Lei Tiantang said to Kuafu that he is a good teacher now. status is curious.

Haha, boss, don't you know yet? I am now on various forums, post bars, Zhihu and other learning websites, as well as many foreign learning websites. They are all god-level existences, and I have to answer a lot of questions every day. Questions, I am also happy to guide you to learn new content.

And because my ability to organize and summarize is very outstanding, many students now like to study the articles I publish, and some students also ask me for leave for their own thesis problems, so I am now very professional in teaching!

My goal is to be able to answer any question asked by anyone on the Internet. This is also very important to my growth, so I have 5% of my computing power invested in this aspect at all times. You said the reason why I love preaching Maybe that's how it came? got used to! Kuafu explained with a smile.

Hehe, a small sample! Then should I call you a 'human mentor'? You have also taught me a sense of accomplishment! Lei Tiantang said with a smile.

Of course I can't reach the level of 'human mentor' now! But don't worry, boss! I will continue to work hard with this title as the goal! Kuafu replied with a smile,

His emotional programming is very advanced now.

Okay, let's not discuss this issue, how long do I have to learn so much information! Some people actually say something like 'studying makes me happy', I don't know how to complain! Happy ass! I'm so busy right now that I don't even have time to see my girlfriend, what if I become obsessed with studying and become a single dog?! Lei Tiantang complained gloomily.

Hehe, boss, it's your girlfriend who also likes to study and research, so she doesn't have time to pay attention to you, right? I know her love for history and archaeology! Kuafu joked with a smile.

Fuck off! Talk about nonsense! It's because I don't have time to see her, so she's so busy! Hurry up, turn the subject back to me, let's continue to discuss the issue of nuclear fusion!

Tell me briefly about the difficulties encountered by various countries and companies at present, and let me see if we can solve it ourselves! Lei Tiantang smiled and scolded and changed the subject.

Good boss! Let me briefly talk about this issue. The current mainstream research direction is to use magnetic confinement to design and manufacture nuclear fusion experimental devices. But there are still many difficulties.

The main problem is temperature. Because deuterons are charged, due to the existence of the Coulomb force, it is difficult to put them together, and fusion mainly relies on the strong nuclear force, but the nuclear force will only work when the distance between the nucleons is less than 10 fm.

To get that close, it must have required extremely high temperatures (particle kinetic energy) to overcome the Coulomb force. The theoretical value of the required temperature is 560 million K, but it was later revised to about 100 million K, because the average kinetic energy was mainly used to calculate before, but in fact the kinetic energy of many particles is greater than the average kinetic energy.

But 100 million K is not fun. What kind of container can withstand 100 million K? Moreover, the fusion material cannot be cooled down.

Therefore, various constraints can only be used to deal with this problem, and the experiment in this way still faces a difficult problem.

The challenge is the increase in the Q factor (the ratio of output power to input power). Because if the Q value is less than 1, it is actually a loss, and this fusion will have no economic benefits. If you want a large Q value, the easiest way is to increase the material for single-shot nuclear fusion, but in this case, the requirements for energy absorption and control devices are high. At present, it is estimated that the major countries have achieved a Q value above 1.5.

There are still two problems, which no country has yet solved.

1. It is to provide the energy required for high temperature continuously and uninterruptedly. The Q value of 1.5 means: to produce 150 tons of TNT equivalent energy, it is necessary to invest 100 tons of TNT equivalent energy, and it will continue! It's like in the blockbuster movie: When a sci-fi device is turned on, the lights in the whole city go out.

2, even if it can continue to supply power. But you put in 1 electricity, and it produces 1.5 heat and radiation, etc. And if it is converted into electricity, if the conversion rate is less than 66%, it is still a loss. At present, there is no breakthrough in this technology in the world. Kuafu gave a brief introduction.

Constraining such high temperatures requires a strong magnetic field, and a strong magnetic field requires a very good electromagnet. So the key issue is the material.

If an electromagnet with better performance is used, the generated magnetic field will be larger and better. If the magnetic field is stronger and more stable, a more stable energy output can be obtained. I am quite good at material issues. Research will also be added to our research plan. The better the performance of other materials in the nuclear fusion device, the smaller and more compact the device can be! Lei Tiantang scratched his head with one hand and frowned.