The wireless power transmission of those gods in Three-body

Trisomy I * * has three parts: trisomy and trisomy II? Dark forest, three-body ⅲ? Death lives forever. The first one is like suspense and the third one is like fantasy. The closest thing to my understanding of science fiction is the second one.

After reading the novel and then reading the cover, I feel that my heart is blocked.

If you ask me, among the books I bought in the past two years, the cover design can impress me the most. The cover of the double-layer design, a sad dark forest, a lonely figure, reveals the brilliant starry sky on the second page inside.

This lonely man, unless I guess, must be Luo Ji, the man in the second film.

On the one hand, the three-body man locked the development of basic science on the earth with Naoko, on the other hand, he sent a three-body fleet to the solar system, which will arrive more than 400 years later.

In the face of unprecedented crisis, on the one hand, the earth people form a space fleet, on the other hand, they can't help but use the ubiquitous wisdom to understand the defects of human thinking and choose four people with side faces to fight against the three-person body. Luo Ji, an academic gangster, became a best friend because the trio tried to kill him. What he did was regarded as a joke by human beings, but in the end, when the earth fleet was defeated, the power amplifier function of the sun was intercepted by the electromagnetic waves emitted by "water droplets". I thought that human civilization on the earth could only be continued by two escaped ships. Luo Ji found a way out for human beings with the law of dark forest.

Luo Ji, one of the faceless people, was infected with a genetic virus after cursing that a star would disappear, and modern medicine could do nothing about it. Luo Ji went into hibernation for 185 years.

185, life has changed dramatically.

After being awakened, Luo Ji found that human life has undergone earth-shaking changes, including the way people get electricity. The original text is as follows:

"I don't know technology, but I still know something, because I just used a police bug, without batteries, and the electricity is inexhaustible. Do you know how it works? Emit microwaves from a distance to provide it with energy. This is the case now, and the power supply method is different from ours at that time. "

Luo Ji stopped, looked at the big history for a long time, looked up at the flying car in the air, and thought of the electric cup. Finally, he understood that it was only wireless power supply. Power supply uses microwave or other forms of electromagnetic oscillating beam to emit electric energy, forming a power supply field in a certain space. Any electrical equipment in this range can use antenna or electromagnetic vibration coil to receive electric energy. As Mahavamsa said, even two centuries ago, it was a very common technology. At that time, it was not widely used because the cost of this power supply method was too high, and only a small part of the electric energy emitted into space was received and utilized, and most of it was lost. In this era, due to the maturity of controlled nuclear fusion technology, energy has been greatly enriched, and the loss caused by wireless power supply has become acceptable.

Two terms are mentioned here: controlled nuclear fusion technology and wireless power supply (transmission).

Before 20 17, nuclear power plants were everywhere in China. What is the difference between nuclear fusion power generation hundreds of years later and nuclear power today?

Yes, that's true.

At present, there are two main ways to use nuclear energy: nuclear fission and nuclear fusion.

In the process of fission, energy is released through nuclear fission, which is the current form of nuclear power generation.

During fusion, lighter nuclei are aggregated into heavier nuclei to release energy, and the sun generates energy through nuclear fusion. The most common is that hydrogen isotopes deuterium and tritium polymerize into heavier nuclei such as helium to release energy. Compared with nuclear fission, nuclear fusion has two advantages. One is that there are a lot of deuterium and tritium in seawater, and the other is clean and safe. Because it will not produce radioactive substances that pollute the environment, it is very clean. At present, the successful application of nuclear fusion is the hydrogen bomb. In the application of power generation, the electricity generated by nuclear fusion is not as much as the input energy, so it can not be used yet.

Therefore, the era of nuclear fusion power generation must be a great era.

Wireless power transmission, as its name implies, is to transmit power without physically visible wires. In fact, wireless power transmission is essentially different from traditional power transmission.

The traditional transmission and distribution technology is like this:

or

The electric energy comes out of the substation and reaches the user side through the transmission line, which has a complete cycle.

The principle of wireless transmission is completely different.

As shown in the figure, it is a familiar transformer principle: the current in the primary coil is in the magnetic field in the iron core, and then the magnetic field induces the current in the secondary coil.

If the iron core is removed and the distance between the two coils is increased, it is the principle of wireless power transmission.

At present, the use of this magnetic field as a transmission medium is limited to centimeter-level short-distance transmission.

By coupling two coils that vibrate at the natural frequency of the system, the near magnetic field with the frequency of MHz can transmit electric energy.

If the transmission medium is changed to microwave, longer distance power transmission can be realized.

Of course, the latter two methods can't be done by coils alone, and other equipment is needed.

A long time ago, when I introduced new energy power generation in class, I couldn't help but start the speech mode when I talked about the excitement. I said, comrades, with the progress of science and technology in the future, wireless transmission technology will further develop. One day, we will build a solar power station in space and then send electricity back to the earth by wireless means. At that time, were we afraid that rain and snow would affect our power generation? Later, I felt that it was not rigorous. Even if the power generation is not affected by rain or shine, it will definitely affect the power transmission of wireless transmission.

But in the future, there may not be a wireless power transmission mode that is not affected by wind and rain.