Magnets, as an invisible force in nature, constantly play a role in our lives. It is not as hot as flames or as turbulent as water, but it has an indescribable attraction. Although this power is intangible, it is ubiquitous, whether it is small iron nails or large machinery and equipment, one can feel its existence. The power of a magnet comes from the magnetic material inside it, which is arranged in a specific way to form a strong magnetic field. It is this magnetic field that enables magnets to attract and repel other magnetic substances, thus exerting various magical effects.

In daily life, magnets are widely used. We use it to make a compass, helping people find direction; We use it to drive the motor and make the machine run; We even use it to make magnetic therapy equipment to help people relieve physical discomfort. It can be said that magnets have become an indispensable part of our lives. However, despite using magnets every day, few people truly understand their principles and mysteries. This requires us to constantly explore and learn in order to better utilize this invisible power in nature.