China Neodymium And Ferrite Magnets Manufacturer & Supplier 
A magnet is a material capable of generating a magnetic field, and its unique properties allow for interaction without contact, a phenomenon largely determined by the presence and properties of a magnetic field.
A magnetic field is an invisible, intangible physical field that surrounds every magnet and is capable of exerting a force on other magnets or magnetic materials in space. This force can be either attractive or repulsive, depending on the relative positions of the two magnetic poles. Magnetic poles with the same name (e.g., two north poles or two south poles) will repel each other, while magnetic poles with different names (a north pole and a south pole) will attract each other.
10x5x3mm Rectangular Neodymium Magnets
The magnitude of the attractive and repulsive forces is inversely proportional to the distance between the magnets; the closer the distance, the greater the force.
In practical applications, the non-contact interaction of magnets is widely used. For example, in maglev train technology, the interaction between strong magnetic fields is utilized to levitate the train above the track, greatly reducing frictional resistance and increasing operating speed and efficiency. In motors and generators, magnets drive the rotor to rotate by the action of a magnetic field without the need for direct contact. In addition, many sensors (e.g., Hall sensors) also utilize changes in the magnetic field to achieve contactless signal detection.
This non-contact interaction not only increases the durability of the device, but also reduces mechanical wear. However, this interaction is also limited by the strength of the magnet and environmental factors, such as the magnetic material of the magnet, its shape, and the presence of other magnetic disturbances in the vicinity.
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