What is the nature of the magnetic field, and the nature of the magnetic field can understand why

Ampère proposed that there is a kind of annular current in the molecules and atoms of the magnet - the molecular current, and the molecular current makes each material particle become a tiny magnet

When the orientation of the molecular current of the magnet is roughly the same, it is explicit magnetic; When the molecular current orientation of the magnet is chaotic, it is not magnetic to the outside

Don't forget that the generation of a changing electric field also requires an electric charge to move faster. For example, when we say that the generation of electromagnetic waves is the vibration of an electric dipole. So to look at a thing with a unified vision, in fact, the electric field and the magnetic field are a unified concept, a magnetic field space, when the reference frame is changed, there will be an electric field, so the electric field and the magnetic field are like two sides of a coin, you can't deliberately separate, the key is just the angle you look at the coin.

The essence of the magnetic field is actually a manifestation of the unity of the electromagnetic field in space.

Energy. The descriptions of various fields in the unified theory are expressed in terms of energy.

It's not Max but Maxwell, he's a physics genius, don't get me wrong!

At the time of the birth of matter he was endowed with many attributes.

The magnetic field is one of the fundamental properties of God's original arrangement.

Is it understandable ''?

Like 9Why does matter have gravitational force? Why Positive and Negative Attraction? This is the original property.

I don't know, but I think someday someone can actually prove what a unified field is.

The essence of the magnetic field is that it can convert magnetism into electricity, and at the same time, it can also convert electricity into magnetism.

I studied electrical engineering and automation, and I pondered for a long time about the electromagnetic theory before I could figure out the principles and build the electromagnetic theory into a framework. (The problems encountered are all ** thinking about the nature of magnetism), why can the energized wire deflect the nearby small magnetic needle, because the moving charge produces a magnetic field, and then briefly explain the Lorentz force, the moving charge will be subjected to a force in the magnetic field (left-handed rule), because the charge motion produces a magnetic field, and the interaction between the two magnetic fields is the Lorentz force, {The change of magnetic flux in the coil will produce an induced current (Lenz's law), and two parallel energized wires will attract or repel, To illustrate the first example, when a magnet is close to a coil, the free charge (sub) in the coil wire moves relative to the magnetic inductance line, which produces the Lorentz force, which causes the charge to move, that is, the charge in the coil moves to form an electric current, and the moving charge also produces a magnetic field, which is exactly the opposite direction of the applied magnetic field. The nature of the inductance is simply to say, after the coil is energized, assuming that the current is very slow, when it flows through each ring is analyzed separately, the magnetic field generated by the current (moving charge) in the previous coil acts on the next coil (before the current passes) will produce a reverse current to cancel, and the self-inductance phenomenon, that is, the voltage ahead current (there is an induced electromotive force but no current).

Here's the point: Why does a moving charge produce a magnetic field? Its essence is the electric field force, (which is the effect of relativity), and it is very cumbersome to use the relativistic effect to analyze, as shown in the following examples:

There is a section of energized wire (the positive and negative charges in the wire are the same density and are electrically neutral), and the current is generated by the directional movement of electrons, while the positive charge does not move. Suppose there is a positive charge next to the wire that is the same as the velocity (magnitude and direction) of the electrons in the wire, we are equivalent to the electrons and the positive charge outside the wire that do not move, and the positive charge in the wire moves in the opposite direction, according to the relativistic effect, the moving object will contract, that is, the positive charge in the wire will shrink due to contraction, so that the spacing becomes smaller and the density becomes larger, at this time, the wire is punctuality, and the Coulomb force (repulsion) generated by the positive charge outside the wire is what we think of as the Lorentz force. The essence of magnetism is another manifestation of the electric field force, and it can even be said that the magnetic field does not exist, but only refers to a physical model and notation for ease of use.

Magnets and other magnetic substances are the sum of the magnetic effects produced by the atoms that make up them, simply put, the magnetic field generated by the movement of electrons outside the nucleus (orbit around the nucleus, spin, etc.), and non-magnetic substances are not magnetic because the magnetic field generated by the movement of electrons outside the nucleus cancels each other out in different directions.

The magnetic field is a special substance that cannot be seen and touched. 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.

No one knows the answer until the unified field theory is complete. Strong interactions, weak interactions, electromagnetic interactions, and gravitational interactions, only by solving this problem may we be one step closer to understanding the nature of these fields.