What exactly does a magnetic field do? What does a magnetic field do?

I think the magnetic field still has a big role, its existence can protect humans from deadly cosmic rays, and at the same time, because of the presence of magnetic fields, it can prevent the earth's atmosphere from being blown away by the sun. With the presence of a magnetic field, it can also help humans to discern their direction.

The magnetic field is to generate an electric field, which in turn produces electromagnetic waves, and everything about electricity used today is related to the magnetic field. At the same time, the magnetic field can also protect the earth from external damage.

The magnetic field is a special substance that cannot be seen or touched. The Earth's magnetic field can deflect high particles in the universe and thus protect humans from deadly cosmic rays.

A magnetic field is a special field in space that exists like a gravitational field but is not visible. It mainly achieves the transfer of force by exerting force on magnetic substances in a magnetic field.

The role of magnetic fields is indispensable in our daily life, such as maglev trains, and magnetic objects will have a magnetic effect when they are put into the magnetic field.

The basic characteristic of a magnetic field is that it can exert a force on the moving charge in it, that is, the energized conductor is affected by the force of the magnetic field in the magnetic field. This is where the force or distance of the magnetic field on the electric current and the magnet is derived. The present theory shows that the magnetic force is a relativistic effect of the electric field force, and the region affected by magnetism shows that the charge passing through the region or the magnetic poles placed in the region will be affected by mechanical force.

When an external magnetic field is applied to a substance, the inside of the magnetic material is magnetized, and many tiny magnetic dipoles appear. Magnetization is a measure of how much a substance is magnetized. Knowing the magnetization of a magnetic substance, it is possible to calculate the magnetic field generated by the magnetic substance itself.

Energy input is required to create a magnetic field. When the magnetic field is annihilated, this energy can be reused, so this energy is considered to be stored in the magnetic field.

There is a magnetic field around the magnet, and the interaction between the magnets is mediated by the magnetic field. 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 that of an electric current, which is the movement of an electric charge, in a nutshell, a magnetic field is generated by a moving electric charge or a changing electric field.

Most magnetic fields have very little effect on people, because we live in magnetic fields.

Of course, strong magnetic fields are harmful to the human body, which will cause genetic mutations and be bad for future generations.

Let the effect of the medicinal power be attracted. It can be used as a power and interference signal. If you don't understand it, ask again, do you adopt.