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Eng ID Term Definition
5361
telemotor
A hydraulic or electrical device control­ling the action of power at a distance, specifically, a device which controls the steering gear of... more
A hydraulic or electrical device control­ling the action of power at a distance, specifically, a device which controls the steering gear of a ship.
5362
telescope
An optical instrument used as an aid in viewing or photographing distant objects, particularly celestial objects.
5363
telescope: meridian
A TELESCOPE whose motion along a VERTICAL CIRCLE is intended to lie in the plane of the MERIDIAN.
5364
telescope: photo zenithal
An instrument designed to take photos of stars culminating close to the zenith of a station in order to determine the position of the statio... more
An instrument designed to take photos of stars culminating close to the zenith of a station in order to determine the position of the station with high accuracy.
5365
telescope: reflecting
A TELESCOPE which collects light by means of a concave MIRROR.
5366
telescope: refracting
A TELESCOPE which collects light by means of a LENS or system of LENSES.
5367
telescope: zenith
An astronomical instrument for deter­mining the LATITUDE by observing ZENITH DISTANCES of two STARS that culminate as close as possible in ... more
An astronomical instrument for deter­mining the LATITUDE by observing ZENITH DISTANCES of two STARS that culminate as close as possible in TIME, and at nearly the same ALTITUDE on opposite sides of the ZENITH.
5368
telescopic alidade
See ALIDADE.
5369
telltale compass
See COMPASS.
5370
telluric current(s)
See CURRENT: TELLURIC.
5371
temperature
The intensity or degree of heat.
5372
temperature correction (levelling)
That CORRECTION which is applied to an observed difference of ELEVATION to correct for the ERROR introduced when the tempe­rature at which ... more
That CORRECTION which is applied to an observed difference of ELEVATION to correct for the ERROR introduced when the tempe­rature at which the LEVELLING RODS are used in the field is different from the temperature at which they were standardized.
5373
temperature correction (tape)
See TAPE: TEMPERA­TURE CORRECTION.
5374
temperature inversion
n OCEANOGRAPHY, a LAYER in which temperature increases with DEPTH. Also called inversion layer.
5375
temperature lapse rate
Rate of decrease of tempera­ture with increasing HEIGHT; usually an average rate over a distance, for example 100 METRES, is conside­red.
5376
temperature-salinity diagram
The plot of temperature versus SALINITY data of a water column. The result is a DIAGRAM which identifies the water masses within the column,... more
The plot of temperature versus SALINITY data of a water column. The result is a DIAGRAM which identifies the water masses within the column, the column's stabil­ity, and indicates the σt value, and allows an estimate of the ACCURACY of the temperature and salinity measurements.
5377
template (or templet)
(1) A pattern or guide, usually constructed of paper, plastic, or metal, used to shape, delimit, or locate an area. (2) A device used in RAD... more
(1) A pattern or guide, usually constructed of paper, plastic, or metal, used to shape, delimit, or locate an area. (2) A device used in RADIAL TRIANGULATION to represent the AERIAL PHOTOGRAPH; the template provides a record of the directions of RADIALS taken from the PHOTO­GRAPH. (3) A structure placed on the SEAFLOOR below a drilling RIG to guide the drill.
5378
temporal
(adj.). Pertaining to or limited by TIME.
5379
temporal variation
See MAGNETIC TEMPORAL VARIATION.
5380
temporary magnetism
See MAGNETISM.