magnetism, force of attraction or repulsion between various substances, especially those made of iron and certain other metals; ultimately it is due to the motion of electric charges.
Magnetism gets it's name from the term magnesia, a region in Asia Minor where loadstone, a naturally magnetic ore, was located in ancient times. Magnets are set up with two poles: a north pole and a south pole. It is commonly known that opposite poles attract and like poles repel, but an interesting fact is that if you break a magnet, the side with the north pole will have another south pole from the one it lost, vice versa for the side with the original south pole. Common metals like iron, nickel, and cobalt are easily magnetized.
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