Magnetism | Introduction
Introduction
One of the most mysterious phenomena we witness every day is magnetismA fundamental force in nature caused by the motion of electrons in an atom., a fundamental force of nature caused by the motion of electronsA subatomic particle with a mass of about one atomic mass unit and a single electrical charge that orbits the nucleus of an atom. in an atom. You put a note on a refrigerator door. You watch the speedometer in a car tell you how fast you are travelling. You listen to a tape of recorded music. All of these depend on magnetism, but how do these things work? How does the simple physics of the magnet make so much possible?