What is the magnetic field of the earth and what is the magnetic field present around the earth call

The Earth's magnetic field, in short, is dipole, which approximates the shape of the magnetic field produced by placing a magnet rod in the center of the earth so that its n pole is facing the south pole. Of course, there is no magnet rod at the center of the earth, but a magnetic field is generated by the dynamo effect of an electric current flowing through the core of a conductive liquid.

The Earth's magnetic field is not isolated, it is affected by external disturbances, and the spacecraft have already detected the presence of the solar wind. The solar wind is a stream of high-temperature, high-speed, low-density particles ejected from the solar corona into interplanetary space, and the main components are ionized hydrogen and ionized helium.

Because the solar wind is a plasma, it also has a magnetic field, and the solar wind magnetic field acts on the Earth's magnetic field as if it wants to blow the Earth's magnetic field away from the Earth. Despite this, the Earth's magnetic field effectively prevents the solar wind from driving straight in. Under the resistance of the earth's magnetic field, the solar wind bypasses the earth's magnetic field and continues to move forward, thus forming a comet-like area of the earth's magnetic field surrounded by the solar wind, which is the magnetosphere.

The Earth's magnetosphere is located at an altitude of 600,1000 kilometres above the ground, and the outer boundary of the magnetosphere is called the magnetopause, which is 570,000 kilometres above the ground. Under the compression of the solar wind, the Earth's magnetic field lines extend far into the space with the side away from the Sun, forming a long tail called a magnetic tail. Near the magnetic equator, there is a special interface, on both sides of the interface, the magnetic field lines suddenly change direction, this interface is called the neutral sheet.

The magnetic field on the neutral sheet is negligible and has a thickness of about 1,000 kilometers. The neutral sheet divides the magnetic tail into two parts: the magnetic field lines in the north face towards the Earth, and the magnetic field lines in the south leave the Earth.

In 1967, it was discovered that a radius of about 10 Earths on either side of the neutral sheet was filled with a dense plasma, an area called a plasma sheet. When the solar activity is intense, the number of energetic particles in the plasma sheet increases, and it rapidly settles along the magnetic field lines to the polar regions of the earth, so that a variety of colorful auroras appear. As the solar wind approaches the edge of the Earth's magnetic field at high speed, a wavefront of the Earth's bow-shaped shock wave is formed without collision.

The transition zone between the wavefront and the magnetopause is called the magnetic sheath and has a thickness of 3 4 Earth radii.

The Earth's magnetosphere is a complex issue, and the physical mechanisms of it need to be studied in depth. The concept of the magnetosphere has recently been extended from Earth to other planets. It is even believed that neutron stars and active galactic nuclei also have magnetospheric characteristics.

The inevitable manifestation of the soul imprisoned on Earth for 10 to the power of 2,000,000 years.

These souls are the makers of living things, the defenders of spherical life.

It's hard for you to make him disappear.

We know that magnetic and electric fields are capable of generating each other.

The earth itself is negatively charged, and due to the rotation of the earth, a circulating current is generated around the earth, and the circulating current creates a magnetic field. This is called electromagnetism. For details, please refer to High School Physics Volume III.

The north and south magnetic fields form the great magnet of the earth.

Electricity generates magnetism, and the earth itself carries a large number of electric charges, and the electric charges also move with it to produce magnetism during the movement.

The electric field is the magnetic field, and the magnetic field is the electric field.

The earth is equivalent to a large magnet, and the magnetic field that exists around it is called the geomagnetic field; The geomagnetic field consists of two parts: the basic magnetic field and the variable magnetic field. The basic magnetic field is the main part of the geomagnetic field, which originates from the interior of the solid earth, is relatively stable, and belongs to the part of the static magnetic field. The variable magnetic field includes various short-term changes in the geomagnetic field, which mainly originate from the outside of the solid earth and is relatively weak.

Geomagnetic field refers to the natural magnetic phenomenon that exists in the interior of the earth. The Earth can be thought of as a magnetic dipole with one pole near the geographic north pole and the other near the geographic south pole. The imaginary straight line (magnetic axis) through these two poles is tilted approximately to the Earth's axis of rotation.

The Earth's magnetic field extends tens of thousands of kilometers into space, forming the Earth's magnetosphere. The Earth's magnetosphere acts as a barrier to the Earth from charged particles carried by the solar wind. The Earth's magnetosphere is squeezed by the force of charged particles in the daytime region (sunward side) and extends outward in the Earth's nocturnal region (backsolar side).

The magnetic field is a special substance that cannot be seen or touched, the magnetic field is not composed of atoms or molecules, but the magnetic field exists objectively. The magnetic field has the radiative properties of wave particles. There is a magnetic field around the magnet, and the interaction between the magnets is mediated by the magnetic field, so the two magnets can act without contact.

An electric current, a moving charge, a magnet, or a special form of matter that exists in the space around the changing electric field. Since the magnetism of a magnet is the same as the current, the current is the movement of an electric charge, so in a nutshell, the magnetic field is generated by the change of the moving charge or electric field.

1. The biggest function of the earth's magnetic field is to form a barrier to concentrate cosmic rays on the north and south poles of the earth. , the north (n) pole of the geomagnetic field is near the geographic south pole, and the south (s) pole of the geomagnetic field is near the geographic north pole.

2. The magnetism of the earth is one of the physical properties of the earth's interior. The earth is a large magnet around which a magnetic field is formed, i.e., the space that exhibits magnetic action. The geomagnetic field is similar to the magnetic field of a magnetic dipole placed at the center of the earth, which is the most basic property of the geomagnetic field.

3. The earth's magnetic field belongs to the electromagnetic field, which is a magnetic field generated by the current effect of the electrons of the outer core rotating with the earth (similar to electromagnetism). The strength of the geomagnetic field is very weak.

4. The earth magnetic field refers to the magnetic field distributed in the space around the earth. The Earth's magnetosphere, located outside the upper atmosphere, is a magnetic envelope shaped like a comet.

Magnetic fields provide navigation for animals on Earth, such as carrier pigeons, which are where magnetic field navigation should be.