Introduction to the principle of magnet attraction and iron absorption

Introduction to the principle of magnet attraction and iron absorption

Why does a magnet attract iron?
All matter is composed of molecules or atoms, and the directional rotation of electrons outside the nucleus will form magnetism. Generally, the molecular order of objects is disorderly, so the magnetic fields formed by electron rotation cancel each other out, so ordinary objects have no magnetism, while magnets The electrons outside the nucleus of the nucleus are all rotating in one direction, so the magnet has magnetism, and its magnitude is equal to the sum of the magnetism produced by the electrons.

The process of a magnet attracting iron is called magnetization, which is to change the disordered molecules in iron into order through a magnetic field, so iron will be as magnetic as a magnet first.

What is the principle of magnet attraction?
The interaction force between magnets is a very wonderful thing, so people are also very keen on their research, so they are widely used in society. It takes a very long process to learn every kind of knowledge thoroughly. Kariki Xiaobian will share with you the principle of mutual attraction of magnets. the

The attraction between A and B magnets is the same as that between atoms, that is, some atoms of A magnet combine with some atoms of B magnet.

Important understanding: Magnets and magnets will release heat (energy, particles) in the process of approaching, that is, atoms combine to release energy. We don’t feel it in our daily life. Don’t deny the energy balance based on your own feeling.

Analysis: The principle of an independent magnet, the particles emitted by the forward-spinning sphere at one end of the magnet will be affected by external particles every step of the way. After a difficult movement process, it will walk out of a curved track, and finally move to the other end and enter the anti-spinning sphere. An extremely important understanding: if the particle is moving, the speed is constant, the greater the direction of the particle movement changes, the greater the cooperation force received by the external particles, if the particle moves in a straight line, the cooperation force is 0, that is, the movement of the curve The greater the curvature of the particle, the greater the force it receives.

Re-analysis: When magnet A meets magnet B, the particles emitted by the forward-spinning sphere at one end of magnet B directly enter the anti-spinning sphere of magnet A, which means that these particles no longer undergo difficult movement processes, reducing the bending at both ends The route, that is, the external force is reduced a lot. Why do magnets attract each other? The reason why magnets attract each other is because of their ferroelectricity (a property related to the ionic structure in metals). This is the knowledge of the physical properties of materials. It is relatively deep. Aluminum, copper, etc. do not have this property. So don't be attracted. Stainless steel is an iron alloy added with elements such as chromium. Because impurities destroy the original composition of metal cations, making them lose their ferroelectricity, they are not attracted.