Before revision: Magnetic poles upThe movement of Earth's North Magnetic Pole across the Canadian arctic Historically, the north and south poles of a magnet were first defined by the Earth's magnetic field, not vice versa, since one of the first uses for a magnet was as a compass needle.
After revision: Magnetic poles upright=1.1|The movement of Earth's North Magnetic Pole across the Canadian arctic Historically, the north and south poles of a magnet were first defined by the Earth's magnetic field, not vice versa, since one of the first uses for a magnet was as a compass needle.