Measurement of any of the magnetic elements.



Related Terms

COMPASS NORTH

The direction north as indicated by a magnetic compass; the reference direction for measurement of compass directions.

MAGNETIC ANNUAL CHANGE

The amount of secular change in the earth’s magnetic field which occurs in 1 year. magnetic annual variation; the small systematic temporal variation in the earth’s magnetic field which occurs after the trend for secular change has been removed from the average monthly values.

CROSSED-FIELD DEVICE

Any instrument crossed-needle meter which uses the motion of electrons in perpendicular electric and magnetic fields to generate microwave radiation, either as an amplifier or oscillator.

MAGNETIC COUPLING

A coupling that connects two shafts by means of a magnetic field.

ACLINIC

Without magnetic dip

NORTH GEOMAGNETIC POLE

The geomagnetic pole in the Northern Hemisphere. This term should not be confused with NORTH MAGNETIC POLE.

HEELING ERROR

The change in the deviation of a magnetic compass when a craft heels, due to the change i

IONOSPHERIC STORM

An ionospheric disturbance characterized by wide variations from normal in the state of the ionosphere, such as turbulence in the F-region, absorption increase, height increase, and ionization density decreases. The effects are most marked in high magnetic latitudes and are associated with abnormal solar activity.

GAGE GLASS

A glass, plastic, or metal tube, usually equipped with shutoff valves, that is connected by a suitable fitting to a tank or vessel, for the measurement of liquid level.

MAGNETIC HEADING

Heading relative to magnetic north; compass heading corrected for deviation.

Related questions

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