博文

目前显示的是 十二月, 2021的博文

How Do Permanet Magnets Work?

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  Permanet magnets are powerful magnetic materials that are extremely hard to detach. A magnetic field produced by a magnet is invisible, but it is responsible for the most notable property of a permanent magnet: its ability to attract other magnets and pull on ferromagnetic materials. It is this field that causes magnets to attract one another and have many other applications. Here is an explanation of how permanet and other permanent magnets work. A permanent magnet has field lines that extend from north to south. A ferromagnetic force is the result of this field. Once the attracting field is induced, the magnet will attract a charge. However, a permanent magnetic material is prone to breakage or to lose its magnetic strength. In order to make a permanent magnet, the field lines must be aligned with the polar axis and are parallel to the surface. To make permanet magnets, rare earth materials such as neodymium and samarium cobalt are commonly used. This type of material has r...