Magnets are objects that produce magnetic fields. There are only a few materials on earth that produce their own magnetic fields. However, there are some materials such as iron, that can be manipulated to produce their own magnetic fields.
Uses
Magnetic materials have several applications. VHS tapes and audio cassettes encode information on magnetic coatings, as do floppy disks. The magnetic strip on the backs of credit cards stores contact information on the owner's account. Electromagnets are even used in computer monitors and cathode ray tube televisions.
Facts
Each magnet has two poles, a north pole and a south pole. Most of the strength of a magnet is found in its poles. If a magnet were to break, neither of its poles would become isolated; a new north pole and south pole would be formed automatically.
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