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	Eng ID	Term	Definition
	3321	modulation	VARIATION of some characteristic of a WAVE, called the CARRIER WAVE, in accordance with instantaneous values of another WAVE, called the MOD... more VARIATION of some characteristic of a WAVE, called the CARRIER WAVE, in accordance with instantaneous values of another WAVE, called the MODULATING WAVE. Variation of AMPLITUDE is amplitude modulation, variation of FREQUENCY is frequency modulation, and variation of PHASE is phase modulation. See MODULATION: PULSE and MODULATION: SPACE.
	3322	modulation: amplitude	The process of changing the amplitude of a carrier wave in accordance with the variations of a modulating wave.
	3323	modulation: frequency	Angle modulation of a sine-wave carrier in which the instantaneous frequency of the modulated wave differs from the carrier frequency by an ... more Angle modulation of a sine-wave carrier in which the instantaneous frequency of the modulated wave differs from the carrier frequency by an amount proportional to the instantaneous value of the modulating wave.
	3324	modulation: pulse	The process of forming very short bursts of a CARRIER WAVE, separated by relatively long periods during which no CARRIER WAVE is transmitt... more The process of forming very short bursts of a CARRIER WAVE, separated by relatively long periods during which no CARRIER WAVE is transmitted.
	3325	modulation: sideband	A particular kind of amplitude modulation in which one of the two frequency bands on both sides of the carrier (and possibly the carrier its... more A particular kind of amplitude modulation in which one of the two frequency bands on both sides of the carrier (and possibly the carrier itself) is suppressed, allowing a considerable reduction of the spectral width of the signal.
	3326	modulation: space	The combining of SIGNALS in space to form a SIGNAL of desired characteristics.
	3327	moire	Undesirable patterns occurring when REPRODUCTIONS are made from halftone PROOFS or steel ENGRAVINGS, caused by conflict between the RULING... more Undesirable patterns occurring when REPRODUCTIONS are made from halftone PROOFS or steel ENGRAVINGS, caused by conflict between the RULING of the HALFTONE screen and the dots or lines of the original; a similar pattern occurring in multicolour halftone reproductions and usually due either to incorrect screen angles or misregister of the colour impressions during printing.
	3328	moiré effect	The effect created by transmitting light through two separate, overlapping families of parallel lines. See also INOGEN LIGHT.
	3329	mole	A massive structure of masonry or large stones serving as a PIER or BREAKWATER, or both. Unit of quantity of matter in the SI system.
	3330	moment	The tendency or degree of tendency to produce motion about an AXIS. Numerically it is the quantity obtained by multiplying the force, SPEE... more The tendency or degree of tendency to produce motion about an AXIS. Numerically it is the quantity obtained by multiplying the force, SPEED, or mass, by the distance from the point of application or CENTRE OF GRAVITY to the AXIS. See MAGNETIC MOMENT.
	3331	moment of inertia	The quantity obtained by multiplying the mass of each small part of a body by the square of its distance from an AXIS, and adding all the ... more The quantity obtained by multiplying the mass of each small part of a body by the square of its distance from an AXIS, and adding all the results.
	3332	momentum	Quantity of motion. That property of a particle which is given by the product of its mass with its VELOCITY.
	3333	monitoring	Checking of the operation and performance of an electronic system through reception of its SIGNALS.
	3334	monochromatic	(adj.). Of, or having one colour. Of, or producing light of one WAVE LENGTH.
	3335	monsoon	WIND of the general circulation of the ATMOSPHERE, typified by the seasonal persistence of a given wind direction and by a pronounced chan... more WIND of the general circulation of the ATMOSPHERE, typified by the seasonal persistence of a given wind direction and by a pronounced change in this direction from one season to another. The term is generally confined to those cases in which the primary cause is the differential heating (changing in nature from summer to winter) of a CONTINENT relative to a neighbouring OCEAN.
	3336	montage	A series of related pieces of copy appearing as one to tell a complete story.
	3337	month	A measure of TIME based on the motion of the MOON in its ORBIT.
	3338	month: anomalistic	The interval of time between two successive passages of the MOON in its ORBIT through PERIGEE. The length of the anomalistic month is 27.55�... more The interval of time between two successive passages of the MOON in its ORBIT through PERIGEE. The length of the anomalistic month is 27.55455 mean SOLAR DAYS.
	3339	month: dracontic	See MONTH: NODICAL.
	3340	month: lunar	See MONTH: SYNODICAL.
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