Definitions for doppler effect
ˈdɒp lərdoppler ef·fect

Princeton's WordNetRate this definition:0.0 / 0 votes

1. Doppler effect, Doppler shiftnoun

   change in the apparent frequency of a wave as observer and source move toward or away from each other

WiktionaryRate this definition:0.0 / 0 votes

1. Doppler effectnoun

   The apparent change in frequency or wavelength of a wave that is perceived by an observer moving relative to the source of the waves.

2. Etymology: From Johann Christian Andreas Doppler, the scientist who first proposed this effect.

WikipediaRate this definition:0.0 / 0 votes

1. Doppler effect

   The Doppler effect or Doppler shift (or simply Doppler, when in context) is the change in frequency of a wave in relation to an observer who is moving relative to the wave source. It is named after the Austrian physicist Christian Doppler, who described the phenomenon in 1842. A common example of Doppler shift is the change of pitch heard when a vehicle sounding a horn approaches and recedes from an observer. Compared to the emitted frequency, the received frequency is higher during the approach, identical at the instant of passing by, and lower during the recession.The reason for the Doppler effect is that when the source of the waves is moving towards the observer, each successive wave crest is emitted from a position closer to the observer than the crest of the previous wave. Therefore, each wave takes slightly less time to reach the observer than the previous wave. Hence, the time between the arrivals of successive wave crests at the observer is reduced, causing an increase in the frequency. While they are traveling, the distance between successive wave fronts is reduced, so the waves "bunch together". Conversely, if the source of waves is moving away from the observer, each wave is emitted from a position farther from the observer than the previous wave, so the arrival time between successive waves is increased, reducing the frequency. The distance between successive wave fronts is then increased, so the waves "spread out". For waves that propagate in a medium, such as sound waves, the velocity of the observer and of the source are relative to the medium in which the waves are transmitted. The total Doppler effect may therefore result from motion of the source, motion of the observer, or motion of the medium. Each of these effects is analyzed separately. For waves which do not require a medium, such as electromagnetic waves or gravitational waves, only the relative difference in velocity between the observer and the source needs to be considered. When this relative velocity is not negligible compared to the speed of light, a more complicated relativistic Doppler effect arises.

ChatGPTRate this definition:0.0 / 0 votes

1. doppler effect

   The Doppler Effect is a physical phenomenon that describes the change in frequency or wavelength of a wave in relation to an observer who is moving relative to the source of the wave. This effect is often observed with sound waves, such as when a vehicle sounding a siren or horn approaches, passes, and then recedes from an observer. The received frequency is higher (compared to the emitted frequency) during the approach, identical at the instant of passing by, and lower during the recession. This effect is also applicable to electromagnetic waves, such as light and radio waves.

WikidataRate this definition:0.0 / 0 votes

1. Doppler effect

   The Doppler effect, named after the Austrian physicist Christian Doppler, who proposed it in 1842 in Prague, is the change in frequency of a wave for an observer moving relative to its source. It is commonly heard when a vehicle sounding a siren or horn approaches, passes, and recedes from an observer. The received frequency is higher during the approach, it is identical at the instant of passing by, and it is lower during the recession. The relative changes in frequency can be explained as follows. When the source of the waves is moving toward the observer, each successive wave crest is emitted from a position closer to the observer than the previous wave. Therefore each wave takes slightly less time to reach the observer than the previous wave. Therefore the time between the arrival of successive wave crests at the observer is reduced, causing an increase in the frequency. While they are travelling, the distance between successive wave fronts is reduced; so the waves "bunch together". Conversely, if the source of waves is moving away from the observer, each wave is emitted from a position farther from the observer than the previous wave, so the arrival time between successive waves is increased, reducing the frequency. The distance between successive wave fronts is increased, so the waves "spread out".

U.S. National Library of MedicineRate this definition:0.0 / 0 votes

1. Doppler Effect

   Changes in the observed frequency of waves (as sound, light, or radio waves) due to the relative motion of source and observer. The effect was named for the 19th century Austrian physicist Johann Christian Doppler.

Dictionary of Military and Associated TermsRate this definition:0.0 / 0 votes

1. doppler effect

   The phenomenon evidenced by the change in the observed frequency of a sound or radio wave caused by a time rate of change in the effective length of the path of travel between the source and the point of observation.

Suggested ResourcesRate this definition:0.0 / 0 votes

1. doppler effect

   Song lyrics by doppler effect -- Explore a large variety of song lyrics performed by doppler effect on the Lyrics.com website.

Matched Categories

1. • Propagation

How to pronounce doppler effect?

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How to say doppler effect in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of doppler effect in Chaldean Numerology is: 7

2. Pythagorean Numerology

   The numerical value of doppler effect in Pythagorean Numerology is: 5

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=doppler effect
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Doppler_Effect
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Doppler_Effect
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=doppler effect
6. ^ Dictionary of Military and Associated Terms
   https://www.tradoc.army.mil/wp-content/uploads/2020/10/AD1029823-DOD-Dictionary-of-Military-and-Associated-Terms-2017.pdf