Geomagnetism is also called geomagnetic field or geomagnetic field. Refers to the magnetic field distributed in space around the earth. The earth's magnetic field is similar to that of a magnetic dipole located in the center of the earth. Its magnetic south pole roughly points to the geographical north pole, and the magnetic north pole roughly points to the geographical south pole. The direction and intensity of the geomagnetic field vary from place to place. The magnetic field near the equator is the smallest and the poles are the strongest. The distribution of magnetic field lines is characterized by that the magnetic field direction near the equator is horizontal, while the magnetic field direction near the poles is vertical to the surface. The magnetic field on the earth's surface is influenced by various factors and changes with time. Geomagnetic north and south poles are opposite to geographical north and south poles.
Medical research has found that geomagnetism is closely related to human health. It can promote cell metabolism, balance endocrine system, promote blood circulation, improve microcirculation, promote inflammation regression, eliminate inflammatory swelling and pain, and eliminate insomnia and nervousness.