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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 T... 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 t... 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.
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