wave

surf; whitecap; undulate: wave a flag; to signal with the hand: wave good-bye
Not to be confused with:waive – relinquish a right voluntarily: waive his right to a jury trial; dispense with; forgo: waive a fee

Wave

W0010900 (wāv)n. A member of the women's reserve of the US Navy, organized during World War II, but now no longer a separate branch.

[From W(omen) A(ccepted for) V(olunteer) E(mergency Service).]

wave

W0010900 (wāv)v. waved, wav·ing, waves v.intr.1. To move freely back and forth or up and down in the air, as branches in the wind.2. To make a signal with an up-and-down or back-and-forth movement of the hand or an object held in the hand: waved as she drove by.3. To have an undulating or wavy form; curve or curl: Her hair waves naturally.v.tr.1. To cause to move back and forth or up and down, either once or repeatedly: She waved a fan before her face.2. a. To move or swing as in giving a signal: He waved his hand. See Synonyms at flourish.b. To signal or express by waving the hand or an object held in the hand: We waved goodbye.c. To signal (a person) by using the hand to move in a specified direction: The police officer waved the motorist into the right lane.3. To arrange into curves, curls, or undulations: wave one's hair.n.1. a. A ridge or swell moving through or along the surface of a large body of water.b. A small ridge or swell moving across the interface of two fluids and dependent on surface tension.2. often waves The sea: vanished beneath the waves.3. Something that suggests the form and motion of a wave in the sea, especially:a. A moving curve or succession of curves in or on a surface; an undulation: waves of wheat in the wind.b. A curve or succession of curves, as in the hair.c. A curved shape, outline, or pattern.4. A movement up and down or back and forth: a wave of the hand.5. a. A surge or rush, as of sensation: a wave of nausea; a wave of indignation.b. A sudden great rise, as in activity or intensity: a wave of panic selling on the stock market.c. A rising trend that involves large numbers of individuals: a wave of conservatism.d. One of a succession of mass movements: the first wave of settlers.e. A maneuver in which fans at a sports event simulate an ocean wave by rising quickly in sequence with arms upraised and then quickly sitting down again in a continuous rolling motion.6. A widespread, persistent meteorological condition, especially of temperature: a heat wave.7. Physics a. A disturbance that travels through a medium. Energy is transferred by a wave from one region of the medium to another without causing any permanent displacement of the medium.b. A graphic representation of the variation of such a disturbance with time.c. A single cycle of a periodic wave.Phrasal Verb: wave off1. To dismiss or refuse by waving the hand or arm: waved off his invitation to join the group.2. Sports To cancel or nullify by waving the arms, usually from a crossed position: waved off the goal because time had run out.

[Middle English waven, from Old English wafian; see webh- in Indo-European roots.]

wav′er n.

wave

(weɪv) vb1. to move or cause to move freely to and fro: the banner waved in the wind. 2. (intr) to move the hand to and fro as a greeting3. to signal or signify by or as if by waving something4. (tr) to direct to move by or as if by waving something: he waved me on. 5. to form or be formed into curves, undulations, etc6. (Textiles) (tr) to give a wavy or watered appearance to (silk, etc)7. (Hairdressing & Grooming) (tr) to set waves in (the hair)n8. (Physical Geography) one of a sequence of ridges or undulations that moves across the surface of a body of a liquid, esp the sea: created by the wind or a moving object and gravity9. any undulation on or at the edge of a surface reminiscent of such a wave: a wave across the field of corn. 10. (Physical Geography) the waves the sea11. anything that suggests the movement of a wave, as by a sudden rise: a crime wave. 12. a widespread movement that advances in a body: a wave of settlers swept into the country. 13. the act or an instance of waving14. (General Physics) physics an oscillation propagated through a medium or space such that energy is periodically interchanged between two kinds of disturbance. For example, an oscillating electric field generates a magnetic oscillation and vice versa, hence an electromagnetic wave is produced. Similarly a wave on a liquid comprises vertical and horizontal displacements. See also antinode, longitudinal wave, node, standing wave, transverse wave15. (General Physics) physics a graphical representation of a wave obtained by plotting the magnitude of the disturbance against time at a particular point in the medium or space; waveform16. (Physical Geography) a prolonged spell of some weather condition: a heat wave. 17. (Hairdressing & Grooming) an undulating curve or series of curves or loose curls in the hair18. (Textiles) an undulating pattern or finish on a fabric19. (Animals) short for wave moth20. make waves to cause trouble; disturb the status quo21. ride the wave slang US to enjoy a period of success and good fortune[Old English wafian (vb); related to Old High German weban to weave, Old Norse vafra; see waver; C16 (n) changed from earlier wāwe, probably from Old English wǣg motion; compare wag¹] ˈwaveless adj ˈwavelessly adv ˈwaveˌlike adj

wave

(weɪv)

n., v. waved, wav•ing. n. 1. a disturbance on the surface of a liquid body, as the sea or a lake, in the form of a moving ridge or swell. 2. any surging or progressing movement or part resembling a wave of the sea. 3. a swell, surge, or rush: a wave of disgust. 4. a widespread attitude or tendency, etc.: a wave of anti-intellectualism. 5. a mass movement: a wave of settlers. 6. an outward curve in a surface or line; undulation. 7. an act or instance of waving. 8. a waviness of the hair. 9. a period of unusually hot or cold weather. 10. Physics. a progressive disturbance propagated from point to point in a medium or space without progress or advance by the points themselves, as in the transmission of sound or light. v.i. 11. to move freely and gently back and forth or up and down, as by the action of air currents, sea swells, etc.: flags waving in the wind. 12. to curve alternately in opposite directions; have an undulating form. 13. to bend or sway up and down or to and fro. 14. to be moved, esp. alternately in opposite directions: a handkerchief waving in the distance. 15. to signal, esp. in greeting, by raising the hand and moving the fingers up and down. v.t. 16. to cause to flutter or have a waving motion in. 17. to cause to bend or sway up and down or to and fro. 18. to cause to curve up and down or in and out. 19. to give a wavy appearance or pattern to, as silk. 20. to impart a wave to (the hair). 21. to greet or signal someone by raising and moving (the hand), esp. alternately in opposite directions. 22. to direct by a waving movement: to wave traffic around an obstacle. 23. to signify or express by a waving movement. Idioms: make waves, Informal. to disturb the status quo. [1325–75; Middle English; Old English wafian to wave the hands]

wave

(wāv) A disturbance or vibration that passes through a medium, such as air or water, transferring energy without causing a permanent change to the medium. See also longitudinal wave, transverse wave. See Note at refraction.

wave

comber, breaker, roller - A long curving wave is a comber, a wave that curls over and dissolves into foam is a breaker, and a long wave moving steadily shoreward is a roller.
scend - As a noun, it is the surge of a wave or the sea; as a verb, it means to pitch or surge up in a heavy sea.
undulate - From Latin unda, "wave."
wave - Meaning "movement of the sea," it seems to be an alteration of the earlier wawe, "wave," from Old English woeg, "motion, wave."

wave

1. A formation of forces, landing ships, craft, amphibious vehicles or aircraft, required to beach or land about the same time. Can be classified as to type, function or order as shown: a. assault wave; b. boat wave; c. helicopter wave; d. numbered wave; e. on-call wave; f. scheduled wave.
2. (DOD only) An undulation of water caused by the progressive movement of energy from point to point along the surface of the water.

Wave(s)

a body of water; the forward movement of a large body of persons, animals, or things.Examples: wave of admirals; wave after wave of the enemy, 1879; wave of enthusiasm; of error, 1781; of strong feeling, 1855; of immigrants, 1893; of materialism, 1903; of militarism, 1915; of opinion, 1870; of passion, 1781; of population, 1852; of prejudice, 1847; of snow, 1886; of tribulations; of weary wretchedness, 1590.

wave

Past participle: waved
Gerund: waving

Imperative
wave
wave

Present
I wave
you wave
he/she/it waves
we wave
you wave
they wave

Preterite
I waved
you waved
he/she/it waved
we waved
you waved
they waved

Present Continuous
I am waving
you are waving
he/she/it is waving
we are waving
you are waving
they are waving

Present Perfect
I have waved
you have waved
he/she/it has waved
we have waved
you have waved
they have waved

Past Continuous
I was waving
you were waving
he/she/it was waving
we were waving
you were waving
they were waving

Past Perfect
I had waved
you had waved
he/she/it had waved
we had waved
you had waved
they had waved

Future
I will wave
you will wave
he/she/it will wave
we will wave
you will wave
they will wave

Future Perfect
I will have waved
you will have waved
he/she/it will have waved
we will have waved
you will have waved
they will have waved

Future Continuous
I will be waving
you will be waving
he/she/it will be waving
we will be waving
you will be waving
they will be waving

Present Perfect Continuous
I have been waving
you have been waving
he/she/it has been waving
we have been waving
you have been waving
they have been waving

Future Perfect Continuous
I will have been waving
you will have been waving
he/she/it will have been waving
we will have been waving
you will have been waving
they will have been waving

Past Perfect Continuous
I had been waving
you had been waving
he/she/it had been waving
we had been waving
you had been waving
they had been waving

Conditional
I would wave
you would wave
he/she/it would wave
we would wave
you would wave
they would wave

Past Conditional
I would have waved
you would have waved
he/she/it would have waved
we would have waved
you would have waved
they would have waved

wave

1. A disturbance moving through the surface of land or water.2. A disturbance or pulse moving through space or a medium.

Thesaurus

Noun	1.	wave - one of a series of ridges that moves across the surface of a liquid (especially across a large body of water)moving ridgemotion, movement - a natural event that involves a change in the position or location of somethingbreakers, surf, breaker - waves breaking on the shorebackwash, wake - the wave that spreads behind a boat as it moves forward; "the motorboat's wake capsized the canoe"swash - the movement or sound of water; "the swash of waves on the beach"riffle, ripple, rippling, wavelet - a small wave on the surface of a liquidcrestless wave, swell - the undulating movement of the surface of the open sealift, rise - a wave that lifts the surface of the water or groundbillow, surge - a large sea wavetidal wave - a wave resulting from the periodic flow of the tides that is caused by the gravitational attraction of the moon and suntidal wave - an unusual (and often destructive) rise of water along the seashore caused by a storm or a combination of wind and high tidetsunami - a cataclysm resulting from a destructive sea wave caused by an earthquake or volcanic eruption; "a colossal tsunami destroyed the Minoan civilization in minutes"rolling wave, roller, roll - a long heavy sea wave as it advances towards the shorecomber - a long curling sea wavewhite horse, whitecap - a wave that is blown by the wind so its crest is broken and appears white
	2.	wave - a movement like that of a sudden occurrence or increase in a specified phenomenon; "a wave of settlers"; "troops advancing in waves"movement, motility, motion, move - a change of position that does not entail a change of location; "the reflex motion of his eyebrows revealed his surprise"; "movement is a sign of life"; "an impatient move of his hand"; "gastrointestinal motility"
	3.	wave - (physics) a movement up and down or back and forthundulationnatural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics"motion, movement - a natural event that involves a change in the position or location of somethinggravitation wave, gravity wave - (physics) a wave that is hypothesized to propagate gravity and to travel at the speed of lightsine wave - a wave whose waveform resembles a sine curveoscillation, vibration - (physics) a regular periodic variation in value about a meanfluctuation - a wave motion; "the fluctuations of the sea"seiche - a wave on the surface of a lake or landlocked bay; caused by atmospheric or seismic disturbancesstanding wave, stationary wave - a wave (as a sound wave in a chamber or an electromagnetic wave in a transmission line) in which the ratio of its instantaneous amplitude at one point to that at any other point does not vary with timetraveling wave, travelling wave - a wave in which the medium moves in the direction of propagation of the waveacoustic wave, sound wave - (acoustics) a wave that transmits soundwave form, wave shape, waveform - the shape of a wave illustrated graphically by plotting the values of the period quantity against timeblast wave, shock wave - a region of high pressure travelling through a gas at a high velocity; "the explosion created a shock wave"pulsation, pulse, pulsing, impulse - (electronics) a sharp transient wave in the normal electrical state (or a series of such transients); "the pulsations seemed to be coming from a star"flapping, fluttering, flap, flutter - the motion made by flapping up and down
	4.	wave - something that rises rapidly; "a wave of emotion swept over him"; "there was a sudden wave of buying before the market closed"; "a wave of conservatism in the country led by the hard right"rise - a growth in strength or number or importance
	5.	wave - the act of signaling by a movement of the handwafture, wavingmotion, gesture - the use of movements (especially of the hands) to communicate familiar or prearranged signalsbrandish, flourish - the act of waving
	6.	wave - a hairdo that creates undulations in the haircoif, coiffure, hair style, hairdo, hairstyle - the arrangement of the hair (especially a woman's hair)finger wave - a wave made with the fingerspermanent, permanent wave, perm - a series of waves in the hair made by applying heat and chemicals
	7.	wave - an undulating curve undulationcurve, curved shape - the trace of a point whose direction of motion changessine curve, sinusoid - the curve of y=sin x
	8.	wave - a persistent and widespread unusual weather condition (especially of unusual temperatures); "a heat wave"cold wave - a wave of unusually cold weatherheat wave - a wave of unusually hot weatherwave front - all the points just reached by a wave as it propagatesatmospheric condition, weather, weather condition, conditions - the atmospheric conditions that comprise the state of the atmosphere in terms of temperature and wind and clouds and precipitation; "they were hoping for good weather"; "every day we have weather conditions and yesterday was no exception"; "the conditions were too rainy for playing in the snow"
	9.	Wave - a member of the women's reserve of the United States Navy; originally organized during World War II but now no longer a separate branchreservist - a member of a military reserveadult female, woman - an adult female person (as opposed to a man); "the woman kept house while the man hunted"
Verb	1.	wave - signal with the hands or nod; "She waved to her friends"; "He waved his hand hospitably"beckongesticulate, gesture, motion - show, express or direct through movement; "He gestured his desire to leave"
	2.	wave - move or swing back and forth; "She waved her gun"brandish, flourishwigwag - send a signal by waving a flag or a light according to a certain codemove, displace - cause to move or shift into a new position or place, both in a concrete and in an abstract sense; "Move those boxes into the corner, please"; "I'm moving my money to another bank"; "The director moved more responsibilities onto his new assistant"
	3.	wave - move in a wavy pattern or with a rising and falling motion; "The curtains undulated"; "the waves rolled towards the beach"flap, undulate, rollmove - move so as to change position, perform a nontranslational motion; "He moved his hand slightly to the right"luff - flap when the wind is blowing equally on both sides; "the sails luffed"
	4.	wave - twist or roll into coils or ringlets; "curl my hair, please"curltwist - turn in the opposite direction; "twist one's head"frizz, kink, kink up, frizzle, crape, crimp - curl tightly; "crimp hair"
	5.	wave - set waves in; "she asked the hairdresser to wave her hair"coiffe, coiffure, coif, arrange, do, dress, set - arrange attractively; "dress my hair for the wedding"marcel - make a marcel in a woman's hairgauffer, goffer - make wavy with a heated goffering iron; "goffer the trim of the dress"perm - give a permanent wave to; "She perms her hair"

wave

verb1. signal, sign, gesture, gesticulate He waved to us from across the street.2. guide, point, direct, indicate, signal, motion, gesture, nod, beckon, point in the direction The policeman waved to us to go on3. brandish, swing, flourish, wield, wag, move something to and fro, shake The protesters were waving banners and shouting.4. flutter, flap, stir, waver, shake, swing, sway, ripple, wag, quiver, undulate, oscillate, move to and fro Flags were waving gently in the breeze.noun1. gesture, sign, signal, indication, gesticulation Paddy spotted Mary Anne and gave her a cheery wave.2. ripple, breaker, sea surf, swell, ridge, roller, comber, billow the sound of waves breaking on the shore3. curl, coil, kink, undulation, loop His fingers touched the thick waves of her hair.4. vibration, ripple, resonance, tremor, reverberation, judder, pulsation The blast wave crushed his breath.5. surge, welling up, rush, flood, thrill, stab, shiver, feeling, tingle, spasm, upsurge, frisson She felt a wave of grief flood over her.6. outbreak, trend, rash, upsurge, sweep, flood, tendency, surge, ground swell the current wave of violence in schools7. stream, flood, surge, spate, current, movement, flow, rush, tide, torrent, deluge, upsurge the wave of immigrants flooding into the countrymake waves cause trouble, stir up trouble If I start making waves I'll end up getting the sack.wave something or someone aside or away dismiss, reject, ignore, discount, disregard, play down, shrug off, spurn, rebuff, brush aside, repudiate, pooh-pooh (informal), treat with contempt Rachel waved aside his protests.wave something or someone down flag down (only used with a vehicle as the object) stop, signal, summon, shout to He vainly attempted to wave down a taxi.

wave

verb1. To move to and fro vigorously and usually repeatedly:switch, wag, waggle.2. To move or cause to move about while being fixed at one edge:flap, flutter, fly.3. To move (one's arms or wings, for example) up and down:beat, flap, flitter, flop, flutter, waggle.4. To wield boldly and dramatically:brandish, flourish, sweep.5. To have or cause to have a curved or sinuous form or surface:curl, curve, undulate.

Translations

波浪风潮飘扬使头发成波浪形招手

wave

(weiv) noun1. a moving ridge, larger than a ripple, moving on the surface of water. rolling waves; a boat tossing on the waves.波浪2. a vibration travelling eg through the air. radio waves; sound waves; light waves. （电、声、光）波 3. a curve or curves in the hair. Are those waves natural? （头发的）波浪 4. a (usually temporary) rise or increase. the recent crime wave; a wave of violence; The pain came in waves. （常指一时的）提高或增加，风潮 5. an act of waving. She recognized me, and gave me a wave. 挥手示意，招手 verb1. to move backwards and forwards or flutter. The flags waved gently in the breeze.飘扬2. to (cause hair to) curve first one way then the other. She's had her hair waved; Her hair waves naturally.使头发成波浪形3. to make a gesture (of greeting etc) with (eg the hand). She waved to me across the street; Everyone was waving handkerchiefs in farewell; They waved goodbye.招手致意ˈwavy adjective (of hair) full of waves. Her hair is wavy but her sister's hair is straight. （头发）波浪状的 ˈwaviness noun波浪形ˈwave(band) noun a range of wavelengths on which eg radio signals are broadcast. （无线电的）波段 ˈwavelength noun the distance from any given point on one (radio etc) wave to the corresponding point on the next. 波长wave aside to dismiss (a suggestion etc) without paying much attention to it. 对...置之不理

wave

→ 挥手zhCN, 波浪zhCN

wave

wave,

in oceanographyoceanography,
study of the seas and oceans. The major divisions of oceanography include the geological study of the ocean floor (see plate tectonics) and features; physical oceanography, which is concerned with the physical attributes of the ocean water, such as currents and
..... Click the link for more information. , an oscillating movement up and down, of a body of water caused by the frictional drag of the wind, or on a larger scale, by submarine earthquakes, volcanoes, and landslides. In seismologyseismology
, scientific study of earthquakes and related phenomena, including the propagation of waves and shocks on or within the earth by natural or artificially generated seismic signals.
..... Click the link for more information. , waves moving though the earth are caused by the propagation of a disturbance generated by an earthquake or explosion. In atmospheric science, waves are periodic disturbances in the air flow.

Oceanographic Waves

In a body of water, waves consist of a series of crests and troughs, where wavelength is the distance between two successive crests (or successive troughs). As waves are generated, the water particles are set in motion, following vertical circular orbits. Water particles momentarily move forward as the wave crest passes and backward as the trough passes. Thus, except for a slight forward drag, the water particles remain in essentially the same place as successive waves pass. The orbital motion of the water particles decreases in size at depths below the surface, so that at a depth equal to about one half of the wave's length, the water particles are barely oscillating back and forth. Thus, for even the largest waves, their effect is negligible below a depth of 980 ft (300 m).

The height and period of water waves in the deep ocean are determined by wind velocity, the duration of the wind, and the fetch (the distance the wind has blown across the water). In stormy areas, the waves are not uniform but form a confusing pattern of many waves of different periods and heights. Storms also produce white caps at wind speeds c.8 mi per hr (13 km per hr). Major storm waves can be over a half mile long and travel close to c.25 mi per hr (40 km per hour). A wave in the Gulf of Mexico associated with Hurricane Ivan (2004) measured 91 ft (27.7 m) high, and scientists believe that other waves produced by Ivan may have reached as much as 132 ft (40 m) high.

Waves of similar heights, known as extreme storm waves (often called rogue waves), most commonly occur in ocean regions of strong ocean currents, which can amplify wind-driven waves when they flow in opposing directions; sandbanks may also act to focus wave energy and give rise to such waves. An extreme storm wave is a wave that is more than twice as high as the surrounding waves. It also often is steeply sided and often comes from a different direction than the surrounding waves. In some cases, such waves can exceed 100 ft (30 m) in height, and sometimes are capable of causing a ship to sink.

When waves approach a shore, the orbital motion of the water particles becomes influenced by the bottom of the body of water and the wavelength decreases as the wave slows. As the water becomes shallower the wave steepens further until it "breaks" in a breaker, or surf, carrying the water forward and onto the beach in a turbulent fashion. Because waves usually approach the shore at an angle, a longshore (littoral) current is generated parallel to the shoreline. These currents can be effective in eroding and transporting sediment along the shore (see coast protectioncoast protection,
methods used to protect coastal lands from erosion. Beaches can exist only where a delicate dynamic equilibrium exists between the amount of sand supplied to the beach and the inevitable losses caused by wave erosion.
..... Click the link for more information. ; beachbeach,
a gently sloping zone where deposits of unconsolidated sediments are subject to wave action at the shore of an ocean or lake. Most of the sediment making up a beach is supplied by rivers or by the erosion of highlands adjacent to the coast.
..... Click the link for more information. ).

In many enclosed or partly enclosed bodies of water such as lakes or bays, a wave form called a standing wave, or seiche, commonly develops as a result of storms or rapid changes in air pressure. These waves do not move forward, but the water surface moves up and down at antinodal points, while it remains stationary at nodal points.

Internal waves can form within waters that are density stratified and are similar to wind-driven waves. They usually cannot be seen on the surface, although oil slicks, plankton, and sediment tend to collect on the surface above troughs of internal waves. Any condition that causes waters of different density to come into contact with one another can lead to internal waves. They tend to have lower velocities but greater heights than surface waves. Very little is known about internal waves, which may move sediment on deeper parts of continental shelves.

Just as a rock dropped into water produces waves, sudden displacements such as landslides and earthquakes can produce high energy waves of short duration that can devastate coastal regions (see tsunamitsunami
, series of catastrophic ocean waves generated by submarine movements, which may be caused by earthquakes, volcanic eruptions, landslides beneath the ocean, or an asteroid striking the earth. Tsunamis are also called seismic sea waves or, popularly, tidal waves.
..... Click the link for more information. ). Hurricanes traveling over shallow coastal waters can generate storm surges that in turn can cause devastating coastal flooding (see under stormstorm,
disturbance of the ordinary conditions of the atmosphere attended by wind, rain, snow, sleet, hail, or thunder and lightning. Types of storms include the extratropical cyclone, the common, large-scale storm of temperate latitudes; the tropical cyclone, or hurricane, which
..... Click the link for more information. ).

Seismic and Atmospheric Waves

Seismic waves are generated in the earth by the movements of earthquakes or explosions. Depending on the material traveled through, surface and internal waves move at variable velocities. Layers of the earth, including the core, mantle, and crust, have been discerned using seismic wave profiles. Seismic waves from explosions have been used to understand the subsurface structure of the crust and upper mantle and in the exploration for oil and gas deposits. Atmospheric waves are caused by differences in temperature, the Coriolis effectCoriolis effect
[for G.-G. de Coriolis, a French mathematician], tendency for any moving body on or above the earth's surface, e.g., an ocean current or an artillery round, to drift sideways from its course because of the earth's rotation.
..... Click the link for more information. , and the influence of highlands.

wave,

in physics, the transfer of energyenergy,
in physics, the ability or capacity to do work or to produce change. Forms of energy include heat, light, sound, electricity, and chemical energy. Energy and work are measured in the same units—foot-pounds, joules, ergs, or some other, depending on the system of
..... Click the link for more information. by the regular vibrationvibration,
in physics, commonly an oscillatory motion—a movement first in one direction and then back again in the opposite direction. It is exhibited, for example, by a swinging pendulum, by the prongs of a tuning fork that has been struck, or by the string of a musical
..... Click the link for more information. , or oscillatory motion, either of some material medium or by the variation in magnitude of the fieldfield,
in physics, region throughout which a force may be exerted; examples are the gravitational, electric, and magnetic fields that surround, respectively, masses, electric charges, and magnets. The field concept was developed by M.
..... Click the link for more information. vectors of an electromagnetic field (see electromagnetic radiationelectromagnetic radiation,
energy radiated in the form of a wave as a result of the motion of electric charges. A moving charge gives rise to a magnetic field, and if the motion is changing (accelerated), then the magnetic field varies and in turn produces an electric field.
..... Click the link for more information. ). Many familiar phenomena are associated with energy transfer in the form of waves. Soundsound,
any disturbance that travels through an elastic medium such as air, ground, or water to be heard by the human ear. When a body vibrates, or moves back and forth (see vibration), the oscillation causes a periodic disturbance of the surrounding air or other medium that
..... Click the link for more information. is a longitudinal wave that travels through material media by alternatively forcing the molecules of the medium closer together, then spreading them apart. Lightlight,
visible electromagnetic radiation. Of the entire electromagnetic spectrum, the human eye is sensitive to only a tiny part, the part that is called light. The wavelengths of visible light range from about 350 or 400 nm to about 750 or 800 nm.
..... Click the link for more information. and other forms of electromagnetic radiation travel through space as transverse waves; the displacements at right angles to the direction of the waves are the field intensity vectors rather than motions of the material particles of some medium. With the development of the quantum theoryquantum theory,
modern physical theory concerned with the emission and absorption of energy by matter and with the motion of material particles; the quantum theory and the theory of relativity together form the theoretical basis of modern physics.
..... Click the link for more information. , it was found that particles in motion also have certain wave properties, including an associated wavelength and frequency related to their momentum and energy. Thus, the study of waves and wave motion has applications throughout the entire range of physical phenomena.

Classification of Waves

Waves may be classified according to the direction of vibration relative to that of the energy transfer. In longitudinal, or compressional, waves the vibration is in the same direction as the transfer of energy; in transverse waves the vibration is at right angles to the transfer of energy; in torsional waves the vibration consists of a twisting motion as the medium rotates back and forth around the direction of energy transfer. The three types of waves are illustrated by an example in which a coil spring is held stretched out by two persons. If the person holding one end pulls a few coils toward himself and releases them, a longitudinal wave will travel along the spring, with coils alternately being pressed closer together, then stretched apart, as the wave passes. If the first person then shakes his end up and down or from side to side, a transverse wave will travel along the spring. Finally, if he grabs several coils and twists them around the axis of the spring, a torsional wave will travel along the spring.

A wave may be a combination of types. Water waves in deep water are mainly transverse. However, as they approach a shore they interact with the bottom and acquire a longitudinal component. When the longitudinal component becomes very large compared to the transverse component, the wave breaks.

Parameters of Waves

The maximum displacement of the medium in either direction is the amplitude of the wave. The distance between successive crests or successive troughs (corresponding to maximum displacements in the same direction) is the wavelength of the wave. The frequency of the wave is equal to the number of crests (or troughs) that pass a given fixed point per unit of time. Closely related to the frequency is the period of the wave, which is the time lapse between the passage of successive crests (or troughs). The frequency of a wave is the inverse of the period.

One full wavelength of a wave represents one complete cycle, that is, one complete vibration in each direction. The various parts of a cycle are described by the phase of the wave; all waves are referenced to an imaginary synchronous motion in a circle; thus the phase is measured in angular degrees, one complete cycle being 360°. Two waves whose corresponding parts occur at the same time are said to be in phase. If the two waves are at different parts of their cycles, they are out of phase. Waves out of phase by 180° are in phase opposition. The various phase relationships between combining waves determines the type of interferenceinterference,
in physics, the effect produced by the combination or superposition of two systems of waves, in which these waves reinforce, neutralize, or in other ways interfere with each other.
..... Click the link for more information. that takes place.

The speed of a wave is determined by its wavelength λ and its frequency ν, according to the equation v=λν, where v is the speed, or velocity. Since frequency is inversely related to the period T, this equation also takes the form v=λ/T. The speed of a wave tells how quickly the energy it carries is being transferred. It is important to note that the speed is that of the wave itself and not of the medium through which it is traveling. The medium itself does not move except to oscillate as the wave passes.

Wave Fronts and Rays

In the graphic representation and analysis of wave behavior, two concepts are widely used—wave fronts and rays. A wave front is a line representing all parts of a wave that are in phase and an equal number of wavelengths from the source of the wave. The shape of the wave front depends upon the nature of the source; a point source will emit waves having circular or spherical wave fronts, while a large, extended source will emit waves whose wave fronts are effectively flat, or plane. A ray is a line extending outward from the source and representing the direction of propagation of the wave at any point along it. Rays are perpendicular to wave fronts.

Wave (physics)

The general term applied to the description of a disturbance which propagates from one point in a medium to other points without giving the medium as a whole any permanent displacement.

Waves are generally described in terms of their amplitude, and how the amplitude varies with both space and time. The actual description of the wave amplitude involves a solution of the wave equation and the particular boundary conditions for the case being studied. See Wave equation, Wave motion

Acoustic waves, or sound waves, are a particular kind of the general class of elastic waves. Elastic waves are propagated in media having two properties, inertia and elasticity. Electromagnetic waves (for example, light waves and radio waves) are not elastic waves and therefore can travel through a vacuum. The velocity of the wave depends on the medium through which the wave travels. See Electromagnetic wave

wave

[wāv] (fluid mechanics) A disturbance which moves through or over the surface of a liquid, as of a sea. (physics) A disturbance which propagates from one point in a medium to other points without giving the medium as a whole any permanent displacement.

wave

1. one of a sequence of ridges or undulations that moves across the surface of a body of a liquid, esp the sea: created by the wind or a moving object and gravity 2. the waves the sea 3. Physics an oscillation propagated through a medium or space such that energy is periodically interchanged between two kinds of disturbance. For example, an oscillating electric field generates a magnetic oscillation and vice versa, hence an electromagnetic wave is produced. Similarly a wave on a liquid comprises vertical and horizontal displacements 4. Physics a graphical representation of a wave obtained by plotting the magnitude of the disturbance against time at a particular point in the medium or space; waveform 5. a prolonged spell of some weather condition 6. an undulating pattern or finish on a fabric

WAVE

(language, robotics)A robotics language.

["WAVE: A Model-Based Language for Manipulator Control",R.P. Paul, Ind Robot 4(1):10-17, 1979].

wave

(1) See iOS 8 Wave prank.

(2) A ripple or undulation. All electromagnetic radiation, including radio signals, light rays, x-rays, and cosmic rays, as well as sound, behave like rippling waves in the ocean. To visualize a wave, take a piece of paper and keep drawing a line up and down while pulling the paper perpendicular to the line. Modulate the line by making it different lengths as you draw it with the paper moving, and notice the resulting pattern. See wave-particle duality and wavelength.

Waves

(dreams)The waves in dreams may represent emotional fluctuations. If you are currently experiencing a period of tranquility and peace, you may be dreaming about calm waters and gentle ocean waves. This dream suggests that you may be gathering energy and recharging emotionally. However, more commonly people dream of violent and dangerous tidal waves. Tidal waves or tsunamis suggest a period of emotional upheaval. Anxiety, stress, and unconscious materials may be coming to the surface and affecting your daily moods. Giant tidal waves may symbolize current emotional unhappiness and psychological stress, which are threatening to destroy you. The outcome of this dream may reveal how much strength you have to “ride out” personal storms. For example, surviving the tidal wave suggests that you have enough strength to overcome challenges and drowning that you may be “in it over your head” and should seek assistance.

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Wave(s)

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Oceanographic Waves

Seismic and Atmospheric Waves

wave,

Classification of Waves

Parameters of Waves

Wave Fronts and Rays

Wave (physics)

wave

wave

WAVE

wave

Waves

wave

wave

wave

wave

wave

wave

a wave

afterpotential wave

alpha wave

beta wave

blast wave

brain wave

c wave

delta wave

dicrotic wave

electromagnetic wave

excitation wave

F wave

f wave

J wave

light wave

Mayer wave

Osborne wave

P wave

postdicrotic wave

pulse wave

Q wave

R wave

radio wave

S wave

shock wave

sound wave

T wave

theta wave

U wave

ultrashort wave

ultrasonic wave

wave

Patient discussion about wave

Wave

Wave

WAVE

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Synonyms for wave

verb signal

Synonyms

verb guide

Synonyms

verb brandish