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Magnets are objects that generate a magnetic field–an invisible force (a region around a magnet) that can attract ferromagnetic materials like iron, nickel, and cobalt towards itself. These materials comprise atoms that exhibit magnetism to attract or repel objects with their two poles (North Pole and South Pole). A magnet comes in different designs to accommodate different needs in modern technology and science applications. Magnets are typically composed of blended materials, such as iron, nickel, cobalt, certain alloys, and rare earth elements. Additionally, magnets come in various sizes–from small fridge magnets to powerful industrial magnets.
The size, shape, and attachment configuration of magnets depends on various factors, including strength, intended usage, and mounting options. Magnets come as either small, medium, or large magnets, ideal for specific applications. Small magnets are widely used in electronic devices, including speakers, sensors, and small electric motors.
Medium-sized magnets are used in household items, industrial equipment, and automotive components. In contrast, large magnets find applications in heavy machinery, generators, and other industrial applications requiring strong magnetic forces. Furthermore, magnets can be either bar magnets, discs, ring magnets, block magnets, cylindrical, or pot magnets with hooks, strips, tapes, clamps, or adhesives for easy attachment to various surfaces.
Magnets are classified into the following categories:
The applications of magnets span a wide range of fields, from science and technology to everyday life. Some typical applications of magnets include: