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	Eng ID	Term	Definition
	5941	wave: indirect	Any WAVE which arrives by an indirect path having undergone an abrupt change of direction by REFRACTION or REFLECTION. See WAVE: SKY.
	5942	wave: internal	A WAVE that occurs within a fluid whose DENSITY changes with DEPTH, either abruptly at a sharp surface of discontinuity (an INTERFACE) or gr... more A WAVE that occurs within a fluid whose DENSITY changes with DEPTH, either abruptly at a sharp surface of discontinuity (an INTERFACE) or gradually. Also called boundary wave.
	5943	wave: longitudinal	A WAVE in which the direction of displacement of each particle in the medium is perpendicular to the WAVE FRONT.
	5944	wave: Love (or Q-wave)	A TRANSVERSE WAVE propagated along the BOUNDARY of two elastic media which both have rigidity, i.e. both media must be capable of propagati... more A TRANSVERSE WAVE propagated along the BOUNDARY of two elastic media which both have rigidity, i.e. both media must be capable of propagating TRANSVERSE WAVES. A surface seismic wave in which the particles of an elastic medium vibrate transverse to the direction of the WAVE's travel, with no vertical component.
	5945	wave: modulated	A WAVE which varies in some characteristic in accordance with the variations of a MODULATING WAVE. See WAVE: CONTINUOUS.
	5946	wave: modulating	A WAVE which modulates a CARRIER WAVE.
	5947	wave: oscillatory	A WAVE in which each individual particle oscillates about a point with little or no permanent change in position. The term is commonly appli... more A WAVE in which each individual particle oscillates about a point with little or no permanent change in position. The term is commonly applied to progressive oscillatory waves in which only the form advances, the individual particles moving in closed ORBITS, as ocean waves in deep waters. Distinguished from a WAVE OF TRANSLATION.
	5948	wave(s): periodic	WAVES which are repeated at regular intervals.
	5949	wave: pressure	See PRESSURE WAVE.
	5950	wave: progressive	A WAVE which is manifested by the progressive movement of the wave form. The opposite is a STANDING WAVE. Also called travelling wave.
	5951	wave: propagation	The travel of waves through or along a medium.
	5952	wave(s): radio	ELECTROMAGNETIC WAVES of FREQUENCIES generally higher than those of audible SOUND WAVES but lower than those of heat and light waves. Also c... more ELECTROMAGNETIC WAVES of FREQUENCIES generally higher than those of audible SOUND WAVES but lower than those of heat and light waves. Also called hertzian waves.
	5953	wave: reflected	A WAVE that has had its direction of motion changed by REFLECTION.
	5954	wave: refracted	A WAVE that has had its direction of motion changed by REFRACTION.
	5955	wave: short	A RADIO WAVE shorter than those of the standard broadcasting band. In OCEANOGRAPHY, WAVES under conditions where the relative DEPTH (water d... more A RADIO WAVE shorter than those of the standard broadcasting band. In OCEANOGRAPHY, WAVES under conditions where the relative DEPTH (water depth/wave length) is greater than 0.5 and where the PHASE VELOCITY is independent of water depth, but dependent upon WAVE LENGTH.
	5956	wave: sky	An indirect RADIO WAVE which travels from the transmitting ANTENNA into the sky, where the IONOSPHERE bends it back toward the EARTH. Also c... more An indirect RADIO WAVE which travels from the transmitting ANTENNA into the sky, where the IONOSPHERE bends it back toward the EARTH. Also called ionospheric wave. See WAVE: GROUND.
	5957	wave: solitary	A WAVE OF TRANSLATION consisting of a single CREST rising above the undisturbed liquid level, without any accompanying TROUGH, in contrast w... more A WAVE OF TRANSLATION consisting of a single CREST rising above the undisturbed liquid level, without any accompanying TROUGH, in contrast with a WAVE TRAIN.
	5958	wave: sound	A mechanical disturbance advancing with finite VELOCITY through an elastic medium and consisting of longitudinal displacements of the ultima... more A mechanical disturbance advancing with finite VELOCITY through an elastic medium and consisting of longitudinal displacements of the ultimate particles of the medium, that is, consisting of compressional and rare-factional displacements parallel to the direction of advance of the disturbance; a LONGITUDINAL WAVE. Also called sonic wave, or acoustic wave.
	5959	wave: spherical	A WAVE whose wave front surfaces are concentric spheres. Such WAVES propagate from a point source.
	5960	wave: standing	A type of WAVE in which the surface of the water oscillates vertically between fixed points, called NODES, without progression. The points ... more A type of WAVE in which the surface of the water oscillates vertically between fixed points, called NODES, without progression. The points of maximum vertical RISE and fall are called antinodes or LOOPS. At the NODES, the underlying water particles exhibit no vertical motion but maximum horizontal motion. At the antinodes the underlying water particles have no horizontal motion and maximum vertical motion. They may be the result of two equal progressive WAVE TRAINS travelling through each other in opposite directions. Also called stationary wave.
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