A magnet is a material that naturally produces a magnetic field. This property can bring many applications, such as sensors, motors, etc. The magnetism on the surface of a magnet refers to the phenomenon that the magnetic field generated by the magnet after it is magnetized is manifested on the surface.
So, what is the difference between magnetism and magnet surface magnetism?
First of all, magnetism is the basic property of a magnet, which describes the ability of a magnet to attract and repel. Specifically, when two magnets are close to each other, they will produce a force, that is, attraction or repulsion. The magnitude of this force depends on how strong the magnetism of the magnet is, while the magnet surface magnetism is only the phenomenon that the magnetic field is manifested on the surface of the magnet, and it does not reflect the magnetism of the magnet itself.
Secondly, the magnetism of a magnet is determined by the magnetic field generated by the movement of electrons inside it, and the magnetism of different materials is also different. For example, materials such as steel can be easily magnetized, while materials such as copper and aluminum are not easily magnetized. The magnet surface magnetism of a magnet is manifested by the magnetic field composed of magnetic lines of force. This magnetic field is only local and only manifested on the surface of the magnet.
Finally, the role played by the magnetism of a magnet and the magnet surface magnetism is also different. Magnetism allows magnets to attract or repel other objects, thereby producing various practical functions. The surface magnetism of a magnet is often used to indicate the magnetic north pole and reflect the distribution of the magnetic field.
