Copyright © Philip M. Parker, INSEAD. Terms of Use.

CONTINUOUS WAVE

Specialty Definition: CONTINUOUS WAVE

DomainDefinition

Computing

Continuous wave (CW) A term from early radio history, when the spark gap method of transmission was replaced by vacuum-tube oscillators. A spark gap initiates a ringing, damped sinusoidal wave in a tuned circuit consisting of an inductor and capacitor. The energy in this circuit is constantly changing between the capacitor's electrostatic field and the inductor's magnetic field. The energy is then coupled, loosely (so as not to dampen the wave too quickly), to the radiating antenna. In contrast, a vacuum-tube oscillator constantly adds energy to the tuned circuit, compensating for the amount coupled to the antenna, and the transmitted energy or "wave," is therefore "continuous". Many (especially radio amateurs) continue to understand "CW" to mean transmission by means a signal of a single frequency which is either on or off (e.g. Morse code), as opposed to a carrier which varies continuously in amplitude, frequency or phase. Some would even call the former "unmodulated" even though turning on and off is actually an extreme form of amplitude modulation. (1995-03-15). Source: The Free On-line Dictionary of Computing.

Electrical Engineering

A signal of constant amplitude used to differentiate between the performance of a microwave component for continuous power levels vs. pulsed signals. Source: European Union. (references)

Source: compiled by the editor from various references; see credits.

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Crosswords: CONTINUOUS WAVE

Specialty definitions using "CONTINUOUS WAVE": analog-pulse power, analogue-pulse power, AzusaCWDecca navigator systemGaussian-pulse powerICWMCW, modulated wavetransistor Gaussian-pulse power rating. (references)

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Commercial Usage: CONTINUOUS WAVE

DomainTitle

Books

  • Doppler echocardiography : the quantitative approach : quantitative methods of pulsed & continuous wave cardiac Doppler (reference)

    (more book examples)

Source: compiled by the editor from various references; see credits.

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Photo Album: CONTINUOUS WAVE

ThumbnailDescription & Credit

Continuous wave Doppler velocity radar unit, which provides a running record of the speed of rocket-powered models fired at the National Advisory Committee for Aeronautics' pilotless aircraft research station on Wallops Island, Va., and two operators. Credit: Library of Congress.

Source: pictures compiled by the editor from various references; see picture credits.

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Expression: CONTINUOUS WAVE

Expression using "CONTINUOUS WAVE": modulated continuous wave. Additional references.

Source: compiled by the editor from various references; see credits.

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Frequency of Internet Keywords: CONTINUOUS WAVE

The following statistics estimate the number of searches per day across the major English-language search engines as identified by various trade publications. Hyperlinks lead to commercial use of the expression at Amazon.com.
 
ExpressionFrequency
per Day

continuous wave

15
Source: compiled by the editor from various references; see credits.

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Modern Translation: CONTINUOUS WAVE

Language Translations for "CONTINUOUS WAVE"; alternative meanings/domain in parentheses.

Danish

  

CW (sustained wave, type AO wave), kontinuerligt signal, kontinuerlig bølge. (various references)

   

Dutch

  

CW (call waiting, sustained wave, type AO wave), continue golf (sustained wave, type AO wave), ongedempte golf (sustained wave, type AO wave). (various references)

   

Finnish

  

CW (call waiting), jatkuva aalto (sustained wave, type AO wave). (various references)

   

French

  

onde entretenue. (various references)

   

German

  

ungedämpfte Welle (sustained wave, type AO wave), kontinuierliche Welle (sustained wave, type AO wave). (various references)

   

Greek 

  

CW (call waiting), κύμα σταθερού πλάτους (sustained wave, type AO wave), συνεχές κύμα (sustained wave, type AO wave), σταθερό κύμα (sustained wave, type AO wave). (various references)

   

Hungarian

  

folytonos hullám, folyamatos hullám, állandó hullám. (various references)

   

Italian

  

onda persistente (sustained wave, type AO wave), onda continua (sustained wave, type AO wave). (various references)

   

Pig Latin

  

ontinuouscay aveway

   

Portuguese

  

onda contínua (sustained wave, type AO wave). (various references)

   

Spanish

  

CW, onda sostenida (sustained wave, type AO wave), onda entretenida (sustained wave, type AO wave), onda continua (sustained wave, type AO wave). (various references)

   

Swedish

  

bärvåg (carrier, carrier wave). (various references)

Source: compiled by the editor from various translation references.

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Anagrams: CONTINUOUS WAVE

Scrabble® Enable2K-Verified Anagrams

Words within the letters "a-c-e-i-n-n-o-o-s-t-u-u-v-w"

-4 letters: autoecious, continuous, evocations, novocaines.

-5 letters: coinvents, conations, continues, continuos, contusion, countians, covenants, cutaneous, evocation, innocuous, innovates, invocates, isooctane, novations, novocaine, outvoices, tenacious, unenvious, vasotocin, venations, vinaceous, vocations.

Source: compiled by the editor from various references; see credits.

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INDEX

1. Crosswords
2. Usage: Commercial
3. Images: Photo Album
4. Expressions
5. Expressions: Internet
6. Translations: Modern
7. Anagrams
8. Bibliography


  

Copyright © Philip M. Parker, INSEAD. Terms of Use.