The purpose of studying electromagnetic force in this world is different from that in the normal world. There is a surplus of metal materials here, so that through the study of electromagnetic force, we want to find a method that can easily stick to metal, and then can
I only study things that can be easily removed and used repeatedly.
This kind of thing can play a very important role in daily life and industrial production. Things such as magnets may be used in things as small as the replacement of screwdriver bits or as large as the lifting of some cranes.
What these people think about is how to control the magnetic force of magnets so that the magnets sometimes have magnetic force and sometimes do not have magnetic force, so that they can stand tightly together when they need to be adhered, and can be easily disassembled when not needed.
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In this way, magnets can exert a very good effect. When adsorbed behind a target, they become a very good building material. At least this is what people in this world expect from magnets.
However, as they gradually researched the relationship between electricity and magnetism, they gradually discovered it. In fact, as long as they invest their energy in studying this connection, it is easy to find it. Although people in this world cannot create a stable current, they have no idea about electricity.
I already have a certain understanding of growing things.
After having a preliminary understanding of electricity, their method of producing electric current was very primitive, but it revealed a simple scientific research spirit that made people feel overwhelmed.
The place where people are most likely to come into contact with electricity is actually static electricity. When clothes rub against the body surface, or when cloth rubs against some smooth materials, static electricity will be generated. And they will find that static electricity is more likely to occur when they come into contact with metal.
trigger.
After understanding this, many problems can be easily solved, such as the problem of static electricity. You only need to prepare a large amount of static electricity materials, and then place them on both sides of the conductor. Then you can put these into the glasses store
The material is fixed on a wheel, and the name is rotated so that the material contacts the wire in turn, so that a relatively stable current can be formed in the wire.
It can be said that the scientific thinking of people in this world is quite simple. They use their own limited conditions to achieve the experimental environment they want. This method of generating electricity can be said to be extremely impractical, but it allows them to bypass many technical problems.
In the early stages of the experiment, a relatively stable current was created, and in this current, they also discovered that the conductor after being energized would produce a certain degree of magnetism, although it was very weak, but they were thinking about how to enhance this magnetism.
Some people's idea is to stack more conductors together. This method has a certain effect, but it is not particularly obvious. After discovering that stacking more conductors together has a certain effect, some people gradually tried it.
They discovered that if the conductor is made into a spiral shape, the magnetic force displayed by it will be greatly enhanced. In this case, if they want to continue to enhance the magnetic force, they quickly found a way.
That is, inserting a magnet into the cylinder can make the magnetic force stronger. Later, through experiments, they found that it is not necessary to insert these ordinary steels to have the same effect.
After I discovered this special effect, they wanted to make an electromagnet, and their wish came true. But after they got the electromagnet, they were not satisfied.
Because electromagnets can only maintain their magnetism when they are charged.
In this era, electricity is difficult to obtain. The cost of relying on static electricity to maintain a stable current is so high that it makes people's minds explode. These people are not a long-term solution. And since they can create current, the current can
Produce magnetism. Then some people are thinking about whether magnetism can also produce electric current. Now that they have considerable demand for electricity, some people have begun to try to use magnetism to produce electric current.
But it was the metal smelting department that contributed to the results, and the experimental results they obtained were also due to an accident. It was not that they wanted to deliberately create an electric current, but that they accidentally created an electric current during the experiment, and learned that
Another department needs a stable current, so it shares its information with the other department.
This is actually what happened. A relatively active metal extracted during their experiments can be directly ignited. If left in the air for a long time, it will rust much faster than steel.
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The strength of this substance is not high and it is not suitable for direct use as a building material. However, the curious humans of this era preserved this metal and conducted various tests.
In an accidental test, this metal and copper were placed in a container filled with liquid, and someone discovered that a weak electric current was generated between the two metal rods.
Moreover, this current is more stable and longer-lasting than the previous static electricity. Over there, the project of studying electronic induction and using magnetism to generate electricity has not been successful, but the battery here has been further developed. In fact, they have developed
The batteries that came out were quite inefficient, far less practical than lead-acid batteries, but the technology was improved step by step. After they discovered the function of batteries, they became more convenient for making magnetic devices.
Hands on.
In fact, they have already discovered in previous experiments that if metal is placed in the middle of the coil for a long time, it will act as an amplification device for the electromagnet for a long time, and over time, it will have magnetic force itself.
Therefore, some of them came up with the conjecture that everyone lives in a huge magnetic environment, so those heated metals will acquire extremely weak magnetic forces in such an environment.
If this is the case, what will be the effect of heating the metal and then placing it in a relatively stronger magnetic field constructed by an electromagnet?
This is easy to think of, and after they tried it, they found that they had obtained a magnet with stronger magnetic force, and it was something that could be adsorbed on steel without being energized. The magnetic force was already quite strong and could stick to steel.
On top of the steel, although they can still be pulled down directly with human hands, it is enough to fix some small objects.
After the technology has advanced to this point, the basic goals of the relevant project teams have been completed, but they have not stopped yet, but have contacted the steel smelting department. Because they found that not all metals can obtain magnetism in this way,
Basically, only steel has this effect. Steel is divided into different situations, and alloys with different ratios obtain different magnetic forces under the same conditions.
Therefore, they believe that different alloy ratios will affect the quality of the manufactured magnets.
If the ratio of the alloy can be adjusted, theoretically they should be able to create a magnet with stronger magnetic force. The fact is as they guessed, by constantly adjusting the ratio of various elements inside the alloy, the magnetization process will be different.
The magnetic force obtained is also different.
The Steel Alloy Laboratory has developed some equipment that is easier to magnetize than current steel, and the technology is advancing in an orderly manner.
After a large number of permanent magnets have been manufactured, the project of trying to generate electricity through magnetism has also made progress. Based on the way electricity creates a magnetic field, if the magnetic field changes, will electricity also be generated in the wire?
With this idea in mind, they quickly came to the gratifying conclusion that inside a closed wire, the changing magnetic field will produce an electric current.
When they first discovered this pattern, it was intermittently. When the electromagnet was energized and de-energized, they found that the coil outside would produce a weak current in the process, but by repeating this process, they
It was quickly discovered that the gains outweighed the losses in obtaining electrical energy, and the energy consumed was much more than the energy obtained.
But at this time, someone's mind was spinning faster and they had already realized how to solve the problem at hand. If it is difficult to change the strength of the electromagnet, it is much easier to change the size of the coil's coverage.
So the members of the experimental team made a parallelogram coil, and then by continuously pulling the coil apart, folding the coil into a line, and repeating this step, current was obtained in a stable magnetic field.
At this time, the people in charge of the experiment, who can be called scientists of this era, had not yet realized the existence of magnetic field lines, nor had they realized that magnetic field lines have directions, so when doing this experiment, they did not try to rotate them
Instead of using a coil to change the magnetic flux passing through the inside of the coil, try to use a more primitive way. Change the magnetic flux by manually changing the cross-sectional area of the coil.
But at this step, they discovered that the magnetic field lines are already very close. The same action is performed at different positions of the magnet, and the current generated is different. In fact, this rule is easy to summarize, that is, the closer the
The two poles of the magnet, the greater the current generated by this continuous opening and closing of the metal coil.
Technology will continue to take detours. Up to this point, this group of people still did not think that the magnetic flux could be changed by rotating a metal coil. The way they thought of was to change the magnetic flux by rotating a magnet.
It can only be said that people who are already familiar with related natural phenomena have a hard time imagining what kind of imagination will explode when they come into contact with natural phenomena for the first time.
The first generator created by this group of humans with brilliant minds who had just come out of the primitive era was a ridiculous thing, because it looked more like a rotary engine, but the way it turned was different.
It makes people feel mentally exploded.
In short, humans in this world made a strong bar magnet with magnetic poles at both ends of the bar. Then they placed the thing on top of a pile of coils, and then the long bar was
The magnet rotates rapidly, thus forming a regular current, or even alternating current, in the coil.
In fact, if they rotate the coil, the effect will be much better than rotating the magnet on it, but you can't say that their technology must have taken a detour. After all, all practices are part of summarizing the laws of nature.
If you go this way, you won't necessarily waste more time.
This weird generator excited the people in this tribe. It could produce a stable current, which meant that their electromagnets might be put to use.
So far, no one realizes that they are embarking on a revolution of epic proportions.
With the continuous progress of experiments and a deeper understanding of convenience and magnetism, people here have gradually discovered the principle of electromagnetic induction, and in the process, they have also gradually realized how to convert electricity and magnetism into each other more efficiently.
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As their generators became more efficient and more diverse, after obtaining and gradually understanding the current, they also discovered the difference between alternating current and direct current.
So far, their mainstream generators have been divided into two types. One is to obtain electrical energy by continuously rotating a coil in a magnetic field, which is the most efficient.
Another method is to make a huge metal disc, and then place the metal disc in a magnetic field to make the metal dome rotate rapidly.
As for the store, it is derived from the center and edge of the round cake, and what this thing exports is different from the previous one. What this thing conducts is direct current.
So far, humans in this world do not have a good way to store electricity, but someone has discovered that the water in this world will turn into gas when electricity is applied. The most important thing is that this gas and extremely rare water vapor
There is a difference. After water vapor turns into steam, it will quickly decompose into a liquid in this world's extremely cold atmospheric environment compared to water, or even quickly solidify into a solid. It is difficult to preserve in such a low-temperature environment.
of.
But if water is turned into gas by electricity, these gases can exist normally in nature, and no heat will be lost in the process.
What's interesting is that if you heat various gases, they will burn violently, and water will be produced after burning, and the water produced in this process is liquid water.
This phenomenon is actually nothing to people on earth. It is just that hydrogen and oxygen are mixed and burned together, and then water is formed. On earth, the energy released during this combustion process is more often used.
But here this feature caused an uproar among the tribe, because it meant that they could carry water for a long time in the wild.
To be precise, it does not carry water, but this special gas. It is normal for this gas to interact with the outside ambient temperature. In other words, it does not convert them into water without igniting them.
Under such circumstances, heat will not be lost quickly due to huge temperature differences.
For humans in this world, this has a much better thermal insulation effect than the strongest thermos flask.