Magnetic-needle
noun
1.
a slender magnetized steel rod that, when adjusted to swing in a horizontal plane, as in a compass, indicates the direction of the earth’s magnetic fields or the approximate position of north and south.
noun
1.
a slender magnetized rod used in certain instruments, such as the magnetic compass, for indicating the direction of a magnetic field
Read Also:
- Magnetic-north
noun 1. north as indicated by a magnetic compass, differing in most places from true north. noun 1. the direction in which a compass needle points, at an angle (the declination) from the direction of true (geographic) north magnetic north The direction toward which the north-seeking arrow of a compass points. ◇ The magnetic north […]
- Magnetic particle inspection
noun 1. (engineering) a method of testing for cracks and other defects in a magnetic material, such as steel, by covering it with a magnetic powder and magnetizing it: any variation in the concentration of the powder indicates a flaw in the material
- Magnetic-pickup
noun 1. a phonograph pickup in which the vibrations of the stylus cause variations in or motions of a coil in a magnetic field that produces corresponding variations in an electrical voltage.
- Magnetic pick-up
noun 1. a type of record player pick-up in which the stylus moves an iron core in a coil, causing a changing magnetic field that produces the current
- Magnetic-pole
noun 1. the region of a magnet toward which the lines of magnetic induction converge (south pole) or from which the lines of induction diverge (north pole) 2. either of the two points on the earth’s surface where the dipping needle of a compass stands vertical, one in the arctic, the other in the antarctic. […]