Who discovered the magnet? Which country was the first magnet to be discovered?

The composition is iron, cobalt, nickel and other atoms have a special internal structure, and the atoms themselves have magnetic moments. In general, the arrangement of these mineral molecules is chaotic. Their magnetic regions affect each other and do not show magnetism, but under the guidance of external forces (such as magnetic fields), the direction of the arrangement of their molecules will tend to be the same, and their magnetism will be clearly displayed, which is what we usually call magnets.

Magnets are divided into permanent magnets and soft irons, and permanent magnets are added with strong magnets.

Make the spin of a magnetic substance with the angular momentum of the electron.

Arranged in a fixed direction, soft magnetism is the addition of electric current (also a method of adding magnetic force) and the soft iron will slowly lose its magnetism when the current is removed. The first to discover and use magnets should be the Chinese, "compass."

It is one of the four great inventions of China.

One. Found.

Ancient Greece. People and Chinese have discovered that there is a natural magnetized stone in nature and call it "magnetite."

Magnets are not invented by people, there are natural magnetite, and the earliest discoverers and use of magnets may be Chinese. One of the four great inventions, "Sinan", is a magnet.

The composition of magnets is iron, cobalt, nickel, etc. Its atomic structure is peculiar, and the atom itself has a magnetic moment. In general, these mineral molecules are arranged in a chaotic manner.

The magnetic regions do not show magnetism when they interact with each other. However, under the guidance of external forces (such as magnetic fields), the molecular arrangement tends to be in the same direction. It's magnetic.

It is also commonly known as a magnet. Iron, cobalt, and nickel are the most commonly used magnetic substances.

Magnets have been discovered as early as the period of the Yandi and Yellow Emperors in China. According to the record of "Five Thousand Years Up and Down", the guide car was already used when the Yellow Emperor fought against Chiyou. China has discovered natural magnets for a long time, because the time is very long

China. The first to discover and use magnets were the Chinese, that is, the use of magnets to make "compasses", one of China's four major inventions. The ancient Greeks and Chinese discovered that there is a natural magnetized stone in nature and called it "magnet stone".

The stone magically picks up small pieces of iron, and always points in the same direction after swinging at will. Early voyagers used this magnet as their earliest compass to discern direction at sea.

1405-1432 Zheng He began the great pioneering of navigation in human history with a compass.

1488-1521 Columbus, Gamma, Magellan used the compass to make world-famous nautical discoveries.

1600 Englishman William. Giber published a monograph on magnetism, "Magnets", and developed the understanding and experiments of ancient Greeks such as Thales and Aristotle.

There's no way to check it anymore.

There is only one legend. At the end of the East China Sea and Heaven lives an immortal. As long as you have a relationship with the immortals, the immortals will give you a wish.

The seafaring explorer then leads the fleet to the East China Sea in search of immortals, and on the way, you will encounter five immortal stones, as long as you can correctly solve the problem of the immortal stones, it will lead you to this immortal. If you think you have a strong sense of direction, enter the game of Immortal Quest in the East China Sea to find the gods and fulfill your wishes! chiculture 08020802game As early as the Han Dynasty, the ancients had discovered that although magnets could attract iron, they could not attract copper and tile stones, and they also knew the repulsion of magnets, and applied magnet repulsion phenomena to leisure activities Fighting chess.

Magnets are also used for anti-theft and military affairs: there are magnets at the gate of Qin Shi Huang's Afang Palace, which are used to prevent thieves with iron tools from entering; When the Jin Dynasty general Ma Long fought with the Qiang people, he stacked magnets on the narrow road, and the Qiang people passed by, and the iron armor and weapons were sucked away by the magnets, and the Qiang people thought that they were gods, and Ma Long won a great victory. Although the ancients did not know that the earth itself was a large magnet, since the Qin and Han dynasties, the knowledge of magnetism has been applied to discern directions, and different artificial magnetic pointers have been developed, especially in the Song Dynasty, when the compass, compass fish and compass turtle were almost simultaneously developed, not only in feng shui but also in navigation technology.

The magnetic pointer of the Qin and Han dynasties was called "Sinan", which was processed from natural magnets and composed of bronze ground and magnetic spoons. The shape of the magnetic spoon is like a scoop spoon, the inner circle of the ground is outside the square, engraved with the 24 directions of the heavenly stem, the earthly branch and the eight trigrams, the central circle is concave, the magnetic spoon is placed on the central circle, and the spoon handle is always pointed to the south when the hail is still and the filial piety is stopped. Although Zeng Gongliang and others did not have a rational concept of geomagnetic field or even geomagnetic inclination at that time, in practice, they made full use of the geomagnetic field and geomagnetic inclination to magnetize iron sheets.

In the Spring and Autumn Period, the ancients had already discovered the phenomenon of magnet absorbing iron, they wrote the word "magnetic" of the magnet as the word "Ci" of the mother, and thought that the "Cishi" attracted iron like a loving mother and her son, so "Cishi" was the original writing of the magnet.

Magnetism is the phenomenon that when two magnets or magnets attract or repel each other, or when the current-carrying wire generates a magnetic field around it, causing the magnetic needle to deflect and point, or when the closed circuit moves in an uneven magnetic field, there will be a phenomenon that the current appears in the closed circuit.

Due to being ferromagnetic, a magnet or magnet creates a magnetic field. In addition, paramagnetic substances tend to move towards regions with strong magnetic fields, that is, they are attracted by magnetic fields. Diamagnetic materials tend to move towards the region where the magnetic field is weak, that is, they are repelled by the magnetic field. There are also substances that have a more complex relationship with the magnetic field, such as the properties of spin glass, antiferromagnetism, and so on. The influence of the external magnetic field on some substances is very weak.

The magnetic state of a substance is related to temperature, pressure, external magnetic field, etc., and the substance will show different magnetic properties depending on the temperature or other parameters.

A common phenomenon. Although human beings have recognized the magnetic phenomenon for a long time, it is not until modern times that people's understanding of the magnetic phenomenon has gradually been systematized, and countless electromagnetic instruments have been invented, such as **, radio, generator, motor, etc. Nowadays, magnetic technology has penetrated into all aspects of our daily life and industrial and agricultural technology, and we have become more and more inseparable from the wide application of magnetic materials.

Because the magnetism of matter can neither be seen nor touched, it is impossible to directly experience the existence of magnetism through its five senses (hearing, sight, taste, smell, and touch), but people still gradually unveil its mystery in practice.

A magnet always has two poles, one is the n pole and the other is the S pole. A magnet, if sawn from the middle, becomes two magnets, each with a pair of poles. No matter how small the magnet is, it will always have n and s poles, which means that the n poles and the s poles will always appear in pairs, and it is impossible to make a magnet have only n poles or only s poles.

Magnet generation can be achieved in a variety of ways, the most commonly used of which are electromagnetic induction and permanent magnetization.

1.Electromagnetic induction.

Electromagnetic induction method is to place a non-magnetic material (such as iron, steel, etc.) in an alternating current coil, through the interaction between the electric field and the magnetic field, so that the non-magnetic material also acquires magnetism. The specific process is: when the alternating current passes through the coil, an alternating magnetic field will be formed around the coil, and this magnetic field will act on the non-magnetic material outside the coil, thus making it a magnet.

This method can produce either temporary magnetism or permanent magnetism.

2.Permanent magnetization method.

Permanent magnetization is the creation of magnets by magnetizing a material using a strong magnetic field. There are two commonly used methods of magnetization:

1) Unidirectional magnetization method: The unmagnetized material is placed in a strong magnetic field, so that it is naturally arranged into microscopic magnetic domains, and then under the action of a strong magnetic field, the materials are continuously brushed in the same direction with steel brushes and other instruments to make the microscopic magnetic domains arranged in the same direction. The resulting magnet is permanently magnetic.

2) Bidirectional magnetization method: also known as composite magnetization, is to magnetize unmagnetized materials in two opposite directions in a strong magnetic field, so that they form a structure composed of microscopic magnetic domains that are opposite to each other. This method results in a more uniform magnetic field and higher magnetic capacity.

In summary, magnet generation can be achieved by electromagnetic induction and permanent magnetization, both of which can form microscopic magnetic domains inside the material, resulting in macroscopic magnetism.

Matter is mostly made up of molecules, which are made up of atoms, which in turn are made up of nuclei and electrons. Inside the atom, the electrons rotate incessantly and revolve around the nucleus. Both of these motions of electrons produce magnetism.

But in most matter, the direction of electron movement is varied and chaotic, and magnetic effects cancel each other out. Therefore, most substances are not magnetic under normal conditions.

Ferromagnetic substances such as iron, cobalt, nickel or ferrite are different, and the electron spins inside them can be spontaneously arranged in a small area to form a spontaneous magnetization region, which is called a magnetic domain. After the ferromagnetic material is magnetized, the internal magnetic domains are arranged neatly and in the same direction, so that the magnetism is strengthened, and the magnet is formed. The magnet magnetizes the magnet, and the magnetized iron and the magnet have different polarities of attraction, and the iron is firmly "glued" to the magnet.

The natural magnet is ferric tetroxide.

Whereas, artificial magnets are usually steel.

Steel retains its magnetism after it has been magnetized.

1. The magnetic field of the energized spiral tube and the magnetic field of the bar magnet are vertically Zen-like, which inspired him to regard the magnetism of the magnet as caused by the flow of electricity;

2. Ampère's theorem says that the essence of magnetism should be attributed to the magnetic effect of electric current, that is, all magnetic phenomena originate from the movement of electric current or charge, and the molecules of any substance have molecular currents, which are equivalent to a primordial magnet. 3. Ampère's hypothesis is confirmed by modern physics: the magnetism of atoms and molecules is caused by the rapid spin of electrons around the nucleus or around their own axis.

1. The magnetic field of the energized spiral tube is the same as that of a bar magnet, which inspired him to regard the magnetism of the magnet as caused by electric current;

2. Ampère's theorem says that the essence of magnetism should be attributed to the magnetic effect of electric current, that is, all magnetic phenomena originate from the flow or the movement of electric charge in electric cracks, and the molecules of any substance have molecular currents, which are equivalent to a primordial magnet, and the chaotic arrangement of molecular currents makes the whole object tremble and not show magnetism, and the regular arrangement of molecular currents makes the object show magnetism; 3. Ampere's hypothesis confirms for modern physics: the magnetism of atoms and molecules is produced by the rapid spin of electrons around the nucleus or around their own equilibrium axis.

As early as the spring of 1820, Oster of Denmark discovered this principle by chance. In 1822, French physicists Arago and Lussac discovered that when an electric current passes through a wire with iron in it, it can magnetize the iron in the winding. This was actually the initial discovery of the principle of electromagnets.

Bridge cracks. An electromagnet is a device that generates electromagnetism when energized. A conductive winding that matches its power is wound around the outside of the core, and this coil that is vented with current is magnetic like a magnet, and it is also called an electromagnet. We usually make it into a bar or hoof shape to make the core more easily magnetized.

In addition, in order to degauss the electromagnet immediately when the electromagnet is deenergized, we often use soft iron or silicon steel materials that demagnetize quickly. Such an electromagnet is magnetic when energized, and the magnetism disappears when the power is off. Electromagnets have a wide range of applications in our daily life, and the power of generators has been greatly improved due to its invention.