Magnetic Fields

It is of common knowledge that every magnet attracts pieces of iron and has two poles: a north pole (N) and a south pole (S). In addition, given two magnets, like poles (N–N or S–S) repel each other, and opposite poles (N–S) attract each other. Moreover, if we cut a magnet in half, we do not obtain isolated north and south poles. Instead, we get two magnets, each with its own north and south pole.