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Longman Dictionary of Contemporary English
▪ The sounds they produce utilize different timbres and wavelengths to imitate cries and evoke natural entities and phenomena.
▪ Huffington and Shearer are on different political wavelengths.
▪ The same object may reflect different wavelengths at different times yet be seen as having the same colour.
▪ White light consists of light waves of all different wavelengths, or colors.
▪ In the interferometer no dispersing element is used, and no separation of different wavelengths is necessary.
▪ Each object shown in these pictures has been scanned at two or three different wavelengths.
▪ Radio waves are electromagnetic waves with a very long wavelength, measurable in metres.
▪ The longer wavelengths associated with heat were radiating through the thick plywood board that covered the one window in his darkroom!
▪ Unfortunately it is more difficult to make light sources and light receptors that work at this longer wavelength.
▪ For example red light has a longer wavelength than green, and green than blue.
▪ Red has the longest wavelength of visible light, and violet the shortest.
▪ However, the performance of monocrystalline cells drops off with the longer wavelengths of light in this spectrum.
▪ Because the sandwich is only a few angstroms thick it transmits visible light - but it reflects longer wavelength heat radiation.
▪ It occurs when dust particles high in the atmosphere filter out most of the longer wavelengths of red light.
▪ The cavity magnetron was simple, rugged and cheap, and produced short wavelength radio waves - microwaves.
▪ These X rays and gamma rays are like waves of light, but with a much shorter wavelength.
▪ Left A fifth-order residual gravity map has been enhanced by the removal of the regional field to accentuate short wavelength anomalies.
▪ A powerful UV/Vis monochromator based detector allows wavelength selection by the turn of a dial and allows very low detection limits.
▪ Because the sandwich is only a few angstroms thick it transmits visible light - but it reflects longer wavelength heat radiation.
▪ Here, the wavelength is about 5 x 107m.
▪ The longer wavelengths associated with heat were radiating through the thick plywood board that covered the one window in his darkroom!
▪ The radiation, which comes From the arc in the mercury vapour, is mainly ultraviolet with a wavelength of 253-7 nanometres.
▪ Two objects may reflect the same wavelengths into our eyes yet be seen as having different colours.
▪ You guys ... I guess you must have a wavelength going.
Douglas Harper's Etymology Dictionary

also wave-length, 1850, "distance between peaks of a wave," from wave (n.) + length. Originally of spectra; radio sense is attested by 1925. Figurative sense of "mental harmony" is recorded from 1927, on analogy of radio waves.


n. The length of a single cycle of a wave, as measured by the distance between one peak or trough of a wave and the next; it is often designated in physics as '''λ''', and corresponds to the velocity of the wave divided by its frequency.

  1. n. the distance (measured in the direction of propagation) between two points in the same phase in consecutive cycles of a wave

  2. a shared orientation leading to mutual understanding; "they are on the same wavelength"


In physics, the wavelength of a sinusoidal wave is the spatial period of the wave—the distance over which the wave's shape repeats, and the inverse of the spatial frequency. It is usually determined by considering the distance between consecutive corresponding points of the same phase, such as crests, troughs, or zero crossings and is a characteristic of both traveling waves and standing waves, as well as other spatial wave patterns. Wavelength is commonly designated by the Greek letter lambda (λ). The concept can also be applied to periodic waves of non-sinusoidal shape. The term wavelength is also sometimes applied to modulated waves, and to the sinusoidal envelopes of modulated waves or waves formed by interference of several sinusoids.

Assuming a sinusoidal wave moving at a fixed wave speed, wavelength is inversely proportional to frequency of the wave: waves with higher frequencies have shorter wavelengths, and lower frequencies have longer wavelengths.

Wavelength depends on the medium (for example, vacuum, air, or water) that a wave travels through.

Examples of wave-like phenomena are sound waves, light, and water waves. A sound wave is a variation in air pressure, while in light and other electromagnetic radiation the strength of the electric and the magnetic field vary. Water waves are variations in the height of a body of water. In a crystal lattice vibration, atomic positions vary.

Wavelength is a measure of the distance between repetitions of a shape feature such as peaks, valleys, or zero-crossings, not a measure of how far any given particle moves. For example, in sinusoidal waves over deep water a particle near the water's surface moves in a circle of the same diameter as the wave height, unrelated to wavelength. The range of wavelengths or frequencies for wave phenomena is called a spectrum. The name originated with the visible light spectrum but now can be applied to the entire electromagnetic spectrum as well as to a sound spectrum or vibration spectrum.

Wavelength (1983 film)

Wavelength is a 1983 low-budget, independent science fiction film written and directed by Mike Gray and starring Robert Carradine, Cherie Currie, and Keenan Wynn.

The story involves a young couple who discover childlike aliens being held by the U.S. government for experimentation in an underground bunker.

The film is set in the Hollywood Hills and the Mojave Desert and features a soundtrack by Tangerine Dream.

Wavelength (album)

Wavelength, the tenth studio album by Northern Irish singer-songwriter Van Morrison, was released in the spring of 1978. The album has a different musical sound than his previous albums, leaning towards a pop sound with prominent electric guitars and synthesizers. Wavelength was Morrison's best selling album at the time of the original release. Mick Glossop, Bobby Tench and Peter Bardens were given credit for special assistance in production.

On 29 January 2008 a remastered version of the album was released. It contained two bonus tracks " Wavelength" and "Kingdom Hall", taken from the promotional album Van Morrison Live at the Roxy (1979), recorded 26 November 1978.

Wavelength (1967 film)

Wavelength is a 45-minute film that made the reputation of Canadian experimental filmmaker and artist Michael Snow. Considered a landmark of avant-garde cinema, it was filmed over one week in December 1966 and edited in 1967, and is an example of what film theorist P. Adams Sitney describes as " structural film", calling Snow "the dean of structural filmmakers." Wavelength is often listed as one of the greatest underground, art house and Canadian films ever made. It was named #85 in the 2001 Village Voice critics' list of the 100 Best Films of the 20th Century. The film has been designated and preserved as a masterwork by the Audio-Visual Preservation Trust of Canada. In a 1969 review of the film published in Artforum, Manny Farber describes Wavelength as "a pure, tough 45 minutes that may become The Birth of a Nation in Underground films, is a straightforward document of a room in which a dozen businesses have lived and gone bankrupt. For all of the film's sophistication (and it is overpowering for its time-space-sound inventions) it is a singularly unpadded, uncomplicated, deadly realistic way to film three walls, a ceiling and a floor... it is probably the most rigorously composed movie in existence."

Wavelength (disambiguation)

A wavelength is a property of a wave.

Wavelength may also refer to:

  • de Broglie wavelength in quantum physics
  • Wavelength (album), 1978 album by Van Morrison
  • "Wavelength" (song), song on the album by Van Morrison
  • Wavelength (1967 film), film by Michael Snow
  • Wavelength (1983 film), film by Mike Gray
  • Wavelength (soundtrack), soundtrack to the 1983 film by Tangerine Dream
  • Wavelength (magazine), a worldwide surfing magazine
  • Wavelength (music series), a Toronto-based live music series
  • WaveLength Charity, a charitable organisation in the United Kingdom
Wavelength (magazine)

Multiple publications exist under the name Wavelength Magazine. 'Wavelength' is a worldwide surfing magazine published by Cornwall & Devon Media, based in Truro, Cornwall. Another 'Wavelength Magazine' is a sea kayaking magazine published on Vancouver Island, British Columbia, Canada, with distribution throughout Canada and the United States and available free online. The Canadian magazine was founded in 1991 on Gabriola Island, British Columbia, and is now published in Nanaimo.

Wavelength (song)

"Wavelength" is the title song from the 1978 album by Northern Irish singer-songwriter Van Morrison. Released as a single in 1978, it climbed to number forty two in the US charts, and stayed in the Hot 100 for eleven weeks. According to Howard A. Dewitt, this "was the song which re-established Morrison's hit making abilities".

Wavelength (soundtrack)

Wavelength (1984) is the fourth soundtrack album and twenty-first overall by the German band Tangerine Dream. It is the soundtrack for the film Wavelength starring Robert Carradine, Cherie Currie, and Keenan Wynn.

Usage examples of "wavelength".

We stopped and deposited the radio bleeper that had been modified to operate on the Russian Fleet Emergency wavelength.

The digitized mirror was clicking and flexing, moving in tiny increments of a few wavelengths of light.

If I can find the right sonic wavelength, I can strike my saser in the proper manner, and with the proper force, to bathe the Earth in sonic vibrations that will, in a matter of a day or so, for it takes time for sound to travel, wipe out humanity, while scarcely touching other life-forms with nucleic acids of differing intimate structure.

I can find the right sonic wavelength, I can strike my saser in the proper manner and with the proper force to bathe the Earth in sonic vibrations that will, in a matter of a day or so, for it takes time for sound to travel, wipe out humanity, while scarcely touching other life forms with nucleic acids of differing intimate structure.

Then Kirtn remembered that Yhelle illusions were limited to visible wavelengths of energy.

The surface color and reflectivity can also be varied by arranging the bacteria into different configurations, so that light waves of one wavelength cancel each other, while the waves of another length reinforce each other, giving the object a certain color, making it light or dark.

Plattnerite itself, and so emerges with wavelengths appropriate to the greener part of the spectrum but still, enough of the original sodium light passes through the Plattnerite without scattering to allow the interference phenomenon to persist.

The stepwise series of concentric orbital shells was actually visible in some wavelengths.

Hals had telephoned Stormer to say he was again receiving those three-second echoes on signals with wavelengths of 31.

He is also repeating the experiments carried out by stormer and Van der Pol, but at wavelengths different from those originally used.

Electrons and positrons, neutrinos and antineutrinos, photons with billion-light-year wavelengths all swirled through the cosmos.

The absorbed energy initiated a branching reaction, a sequential one photon architecture-a set of wavelength keys fitted across the darkness into a self-repairing chromophore lock originally built of bacterial protein.

More specifically, that melaninlike pigment that causes your skin to glow is photo-reactive under the aegis of a chromoprotein that absorbs at much longer wavelengths than those of the visual spectrum.

If the Handler was to he believed, the local computing nodes in each star system were only millimeters wide, and they communicated with the others, light years away, with pulses so weak, so tightly aimed, so unpredictable in wavelength, and so ingeniously encoded that a thousand interstellar civilizations had come and gone without noticing their presence.

This limit, called the Rayleigh criterion, is proportional to the wavelength of the light being focused divided by the lens aperture.