ABSOLUTE MAGNETOMETER

An instrument used to measure ocean current velocities based on their electrical effects in the magnetic field of the earth.

A sensor that uses the Hall effect to measure magnetic field strength.

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.

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.

An instrument for measuring the intensity of a magnetic field

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.

An instrument designed to measure thermal conductivity; in particular, one that compares the rates at which different rods transmit heat.

Instrument used to measure degree of moisture in the atmosphere.

A separator that uses a magnetic field to attract and hold ferromagnetic particles.

The technique of transporting high-energy, high-current electron beams from an accelerator to a target through a region of high-pressure gas by creating a path through the gas where the gas density may be temporarily reduced; the gas may be ionized; or a current may flow whose magnetic field focuses the electron beam on the target.