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Magnetism is the mechanism made use of to store information on disc drives, and the surface of just about every disc is coated in billions to trillions of tiny magnets that hold data. Tough drives study and shop information and facts on reputable magnetic systems, which is why exposure to unexpected magnetic fields can interrupt and harm electronic overall performance. There are two forms of rare earth magnet, neodymium magnets and samarium cobalt magnets. There are several diverse grades of each and every, all of which have distinctive properties. From blocks, cubes, spheres, cylinders to arcs and rings we here...