Why do magnets lose their magnetivity over time?
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The magnetism in a magnet is created by the movement of electrons. Over time, the electrons can become disorganized and the magnetism decreases. Another reason magnets lose their magnetivity is due to heat. When a magnet is heated, the thermal energy causes the magnetic dipoles to become disordered and random. This is why a magnet that has been heated will no longer be a good magnet.
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