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	Eng ID	Term	Definition
	2861	linear parallax	See PARALLAX: ABSOLUTE STEREOSCOPIC.
	2862	linear scale	See SCALE: BAR.
	2863	linear speed	See SPEED.
	2864	line of apsides	The line connecting the two orbital points (called apsides) that are nearest and farthest from the centre of attraction, as the PERIGEE and ... more The line connecting the two orbital points (called apsides) that are nearest and farthest from the centre of attraction, as the PERIGEE and the APOGEE in the case of an ORBIT about the EARTH, and the PERIHELION and the APHELION in the case of an ORBIT about the SUN.
	2865	line of collimation	See COLLIMATION.
	2866	line of constant scale	Any line on a PHOTOGRAPH which is parallel to the TRUE HORIZON or to the ISOMETRIC PARALLEL.
	2867	line of delimitation	A line drawn on a map or chart depicting the separation of any type of maritime jurisdiction.
	2868	line of equidistance	See MEDIAN LINE.
	2869	line of flow	The vector line showing the DIRECTION OF CURRENT at a given TIME. Also called STREAMLINE.
	2870	line of force	A line indicating the direction in which a force acts, as in a MAGNETIC FIELD. See MAGNETIC LINES OF FORCE.
	2871	line of levels	A continuous series of measured differences of ELEVATION.
	2872	line of nodes	The straight line connecting the two points of intersection of the ORBIT of a PLANET, PLANETOID, or COMET and the ECLIPTIC, or the line of i... more The straight line connecting the two points of intersection of the ORBIT of a PLANET, PLANETOID, or COMET and the ECLIPTIC, or the line of intersection of the planes of the ORBITS of a SATELLITE and its primary. See NODE.
	2873	line of position	A line indicating a series of possible POSITIONS of a craft, determined by OBSERVATION or measurement. Also called position line. See CELEST... more A line indicating a series of possible POSITIONS of a craft, determined by OBSERVATION or measurement. Also called position line. See CELESTIAL LINE OF POSITION, CIRCLE OF POSITION, COURSE LINE, ELECTRONIC LINE OF POSITION, FIX, HYPERBOLIC LINE OF POSITION, LATITUDE LINE, LEADING LINE, LONGITUDE LINE, RETIRED LINE OF POSITION, SONIC LINE OF POSITION, SPEED LINE, SUMNER LINE, SURFACE OF POSITION, VISUAL LINE OF POSITION.
	2874	line of sight	The straight line between two points. This line is in the direction of a GREAT CIRCLE, but does not follow the curvature of the EARTH. See a... more The straight line between two points. This line is in the direction of a GREAT CIRCLE, but does not follow the curvature of the EARTH. See also COLLIMATION: LINE OF.
	2875	line of sounding	A series of SOUNDINGS along a predetermined line, and at stated intervals, when SURVEYING. Also referred to as sounding line. See CHECK LINE... more A series of SOUNDINGS along a predetermined line, and at stated intervals, when SURVEYING. Also referred to as sounding line. See CHECK LINES, CROSS LINES, CROSS-SECTION LINES, INTER LINE, SPLIT LINE, STARRED LINES, TRACK LINE OF SOUNDING, SYSTEMS OF SOUNDING LINES.
	2876	line spacing	Distance between sounding lines. Spacing usually depends on the type of survey, the instruments used, and the demanded accuracy.
	2877	line squall	SQUALL which occurs along a SQUALL LINE.
	2878	lipper	Slight ruffling or roughness on a water surface. Light spray from small WAVES. Also called leaper.
	2879	liquid compass	See COMPASS.
	2880	list	INCLINATION to one side, as of a vessel until she has found EQUILIBRIUM in an inclined position. Listing is a static condition, as disting... more INCLINATION to one side, as of a vessel until she has found EQUILIBRIUM in an inclined position. Listing is a static condition, as distinguished from heeling which is dynamic. See HEEL.
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