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	Eng ID	Term	Definition
	5921	water specimen cup	See WATER BOTTLE.
	5922	water turbulence	The disturbance of water caused by the interaction of any combination of WAVES, CURRENTS, TIDAL STREAMS, WIND, SHOAL patches and OBSTRUCTION... more The disturbance of water caused by the interaction of any combination of WAVES, CURRENTS, TIDAL STREAMS, WIND, SHOAL patches and OBSTRUCTIONs.
	5923	water vapor	Water in the gaseous phase.
	5924	waterway	A line of water (RIVER, CHANNEL, etc.) which can be utilized for communication or transport.
	5925	watt	The unit of power in the SI system.
	5926	wave	A disturbance which moves through or over the surface of the medium with SPEED dependent upon the properties of the medium. A ridge deformat... more A disturbance which moves through or over the surface of the medium with SPEED dependent upon the properties of the medium. A ridge deformation, or UNDULATION of the surface of a liquid.
	5927	wave: capillary	A WAVE whose VELOCITY of propagation is controlled primarily by the surface tension of the liquid in which the WAVE is travelling. Water w... more A WAVE whose VELOCITY of propagation is controlled primarily by the surface tension of the liquid in which the WAVE is travelling. Water waves of length less than one INCH are considered to be capillary waves.
	5928	wave: carrier	A RADIO WAVE used as a vehicle for conveying intelligence, generally by MODULATION. Also called carrier.
	5929	wave: cellular	System of SURFACE WAVES in which the OSCILLATION of water is limited as by solid BOUNDARIES. The PERIOD is the same in adjacent cells.
	5930	wave: compressional	A WAVE in an elastic medium which causes an element of the medium to change its volume without undergoing rotation.
	5931	wave: continuous	A series of WAVES of like AMPLITUDE and FREQUENCY. See WAVE: MODULATED, PULSE.
	5932	wave: cycloidal	A very steep, symmetrical WAVE whose CREST forms an angle of 120 DEGREES. The wave form is that of a cycloid. A TROCHOIDAL WAVE of maximum s... more A very steep, symmetrical WAVE whose CREST forms an angle of 120 DEGREES. The wave form is that of a cycloid. A TROCHOIDAL WAVE of maximum steepness.
	5933	wave(s): damped	WAVE(S) the AMPLITUDE of which becomes progressively smaller.
	5934	wave: direct	A subdivision of the space wave component of the electromagnetic GROUND WAVE. This WAVE is propagated directly through space, i.e., it fol... more A subdivision of the space wave component of the electromagnetic GROUND WAVE. This WAVE is propagated directly through space, i.e., it follows the shortest path between TRANSMITTER and RECEIVER.
	5935	wave: edge	An ocean wave travelling parallel to a COAST, with CRESTS normal to the COASTLINE. Such a WAVE has a HEIGHT that diminishes rapidly seaward ... more An ocean wave travelling parallel to a COAST, with CRESTS normal to the COASTLINE. Such a WAVE has a HEIGHT that diminishes rapidly seaward and is negligible at a distance of one WAVE LENGTH offshore.
	5936	wave: electromagnetic	WAVE(S) of associated electric and magnetic fields characterized by variations of the fields. The electric and magnetic fields are at right ... more WAVE(S) of associated electric and magnetic fields characterized by variations of the fields. The electric and magnetic fields are at right angles to each other and to the direction of propagation. An electromagnetic wave is coherent if the phase-time relationship is constant throughout the propagation path.
	5937	wave: forced	A WAVE generated and maintained by a continuous force, in contrast to a FREE WAVE that continues to exist after the generating force has c... more A WAVE generated and maintained by a continuous force, in contrast to a FREE WAVE that continues to exist after the generating force has ceased to act.
	5938	wave: free	A WAVE that continues to exist after the generating force has ceased to act, in contrast with a FORCED WAVE that is generated and maintained... more A WAVE that continues to exist after the generating force has ceased to act, in contrast with a FORCED WAVE that is generated and maintained by a continuous force. A free wave on a water surface is one created by a sudden impulse, thereafter influenced only by friction, the dimensions of the BASIN, and the dispersive character of the water medium it moves in. Most ocean surface waves except TIDAL WAVES are free waves. See OSCILLATION.
	5939	wave: gravity	A WAVE whose VELOCITY of propagation is controlled primarily by GRAVITY. Water waves of length greater than 2 INCHES are considered gravity ... more A WAVE whose VELOCITY of propagation is controlled primarily by GRAVITY. Water waves of length greater than 2 INCHES are considered gravity waves.
	5940	wave: ground	That portion of a RADIO WAVE in proximity to and affected by the GROUND, being somewhat refracted by the lower ATMOSPHERE, diffracted by t... more That portion of a RADIO WAVE in proximity to and affected by the GROUND, being somewhat refracted by the lower ATMOSPHERE, diffracted by the surface of the EARTH and retarded by the resistivity of the EARTH. Such a WAVE travels more or less parallel to the surface of the EARTH. See WAVE: SKY.
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