A system of storing information through the alignment of small grains in a magnetic material. Once the grains have been aligned by an external magnetic field, the information remains stored for long periods of time. This is the technique used in the hard drives of computers as well as in magnetic tape.
noun 1. a line on the earth’s surface, passing in the direction of the horizontal component of the earth’s magnetic field. noun 1. a continuous imaginary line around the surface of the earth passing through both magnetic poles magnetic meridian An imaginary reference line passing through both geomagnetic poles of the Earth, used in models […]
noun, Navy. 1. an underwater mine set off by any disturbance of its magnetic field, as by the metal hull of a ship. noun 1. a mine designed to activate when a magnetic field such as that generated by the metal of a ship’s hull is detected
noun, Physics. 1. a region in a magnetic bottle where the magnetic field increases abruptly, causing charged particles that enter it to be reflected. noun 1. (physics) a configuration of magnetic fields used to confine charged particles, as in a magnetic bottle
noun, Electricity. 1. a vector quantity associated with a given electric current, magnet, or the like, having the property that its vector product with the magnetic induction equals the torque acting on the given object. noun 1. short for magnetic dipole moment, electromagnetic moment magnetic moment See magnetic dipole moment.