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  Magnets seem to have invisible powers. Have you ever wondered how a compass works? Or how magnets stick to your refrigerator to hold up your artwork?
  The invisible powers of magnets seem to be magic, but after years of scientific study we know a lot more about how magnets work. Scientists define a magnet as an object that will attract (pull toward) anything made of iron or steel.
  Every magnet has a north and south pole, just like the earth. Opposite poles attract - so the north pole attracts the south pole and the south pole attracts the north pole. Like poles will repel (push away from) each other - so if you place two north poles together or two south poles together they will push each other away. A magnet's strength is strongest at the poles and weakest in the middle..
  The space around a magnet is called a magnetic field. It is this invisible area where the force of a magnet can be felt, and where that magic seems to happen. For example, the closer you bring a paper clip to a magnet, the more you will feel the pull of the magnetic field.
  Again the force, the push or pull, of a magnet is strongest at its ends - also called the north and south poles.
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