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Total record count: 6269.

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Eng ID Term Definition
441
bearing
The horizontal DIRECTION of one terrestrial point from another, expressed as the ANGULAR DISTANCE from a REFERENCE DIRECTION. It is usually ... more
The horizontal DIRECTION of one terrestrial point from another, expressed as the ANGULAR DISTANCE from a REFERENCE DIRECTION. It is usually measured from 0° at the REFERENCE DIRECTION clockwise through 360°. The terms bearing and AZIMUTH are sometimes used interchangeably, but in NAVIGATION the former customarily applies to terrestrial objects and the latter to the DIRECTION of a point on the CELESTIAL SPHERE from a point on the EARTH. A bearing is designated as true, MAGNETIC, or compass as the REFERENCE DIRECTION is TRUE, MAGNETIC, or COMPASS NORTH.
442
bearing: acoustic
See BEARING: SONIC.
443
bearing: compass
See BEARING.
444
bearing: danger
The maximum or minimum BEARING of a point for safe passage of an offlying danger.
445
bearing: great circle
The initial DIRECTION of a GREAT CIRCLE through two terrestrial points, expressed as ANGULAR DISTANCE from a REFERENCE DIRECTION. BEARINGS o... more
The initial DIRECTION of a GREAT CIRCLE through two terrestrial points, expressed as ANGULAR DISTANCE from a REFERENCE DIRECTION. BEARINGS obtained by any form of RADIANT ENERGY are great-circle bearings.
446
bearing: grid
BEARING relative to GRID NORTH. See also AZIMUTH: GRID.
447
bearing: magnetic
BEARING relative to MAGNETIC NORTH. COMPASS BEARING corrected for MAGNETIC DEVIATION.
448
bearing: Mercatorial (or Mercator)
See BEARING: RHUMB.
449
bearing: polar
In a system of POLAR or SPHERICAL COORDINATES, the angle formed by the intersection of the reference MERIDIONAL PLANE and the MERIDIONAL PLA... more
In a system of POLAR or SPHERICAL COORDINATES, the angle formed by the intersection of the reference MERIDIONAL PLANE and the MERIDIONAL PLANE containing the point.
450
bearing: radar
A BEARING obtained by RADAR.
451
bearing: radio
The angle between the apparent direction of a definite source of emission of ELECTRO-MAGNETIC WAVES and a REFERENCE DIRECTION, as determined... more
The angle between the apparent direction of a definite source of emission of ELECTRO-MAGNETIC WAVES and a REFERENCE DIRECTION, as determined at a RADIO DIRECTION-FINDING STATION.
452
bearing: reciprocal
A BEARING differing by 180° from a given BEARING.
453
bearing: relative
BEARING relative to the HEADING of a craft.
454
bearing: rhumb
The direction of a RHUMB LINE through two terrestrial points expressed as ANGULAR DISTANCE from a REFERENCE DIRECTION. Also called mercatori... more
The direction of a RHUMB LINE through two terrestrial points expressed as ANGULAR DISTANCE from a REFERENCE DIRECTION. Also called mercatorial (or mercator) bearing.
455
bearing: sonic
A BEARING determined by measuring the direction from which a SOUND WAVE is coming. Also called acoustic bearing.
456
bearing: transit
A BEARING taken of two objects when in line.
457
bearing: true
See BEARING.
458
bearing circle
A ring designed to fit snugly over a COMPASS or COMPASS REPEATER, and provided with VANES for observing BEARINGS. A similar ring provided wi... more
A ring designed to fit snugly over a COMPASS or COMPASS REPEATER, and provided with VANES for observing BEARINGS. A similar ring provided with means for observing AZIMUTH of the SUN is called an azimuth circle.
459
bearing plate
See PELORUS.
460
beat
The periodic variation that results from the superposition of two OSCILLATIONS whose FREQUENCIES differ by a small amount.