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An instrument used to measure the intensity of a magnetic field without reference to other magnetic instruments. |
Related Terms |
ELECTROKINETOGRAPH
An instrument used to measure ocean current velocities based on their electrical effects in the magnetic field of the earth. |
DIP NEEDLE
A magnetic needle suspended so as to be free to rotate about a horizontal axis. An instrument using such a needle to measure magnetic dip is called a DIP CIRCLE. A dip needle with a sliding weight that can be moved along one of its arms to balance the magnetic force is called a HEELING ADJUSTER. |
HALL-PLATE DEVICE
A sensor that uses the Hall effect to measure magnetic field strength. |
IMPEDANCE MAGNETOMETER
An instrument for determining local variations in magnetic field by measuring the change in impedance of a high-permeability nickel-iron wire. |
HALL-EFFECT GAUSSMETER
A gaussmeter that consists of a thin piece of silicon or other semiconductor material which is inserted between the poles of a magnet to measure the magnetic field strength by means of the Hall effect. |
ELECTRODYNAMIC AMMETER
Instrument which measures the current passing through a fixed coil and a movable coil connected in series by balancing the torque on the movable coil (resulting from the magnetic field of the fixed coil) against that of a spiral spring. |
FLUXMETER
An instrument for measuring the intensity of a magnetic field |
HORIZONTAL MAGNETOMETER
A measuring instrument for ascertaining changes in the horizontal component of the magnetic field intensity. |
FLUX GATE
A detector that gives an electric signal whose magnitude and phase are proportional to the magnitude and direction of the external magnetic field acting along its axis; used to indicate the direction of the terrestrial magnetic field. |
LINE OF FORCE
A line indicating the direction in which a force acts, as in a magnetic field |
