| Doppler shift |
Doppler effect: change in the apparent frequency of a wave as observer and source move toward or away from each other
출처: wordnet.princeton.edu/perl/webwn
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| Doppler shift |
The Doppler effect, named after Christian Andreas Doppler, is the apparent change in frequency or wavelength of a wave that is perceived by an observer moving relative to the source of the waves. For waves, such as sound waves, that propagate in a wave medium, the velocity of the observer and the source are reckoned relative to the medium in which the waves are transmitted. The total Doppler effect may therefore result from either motion of the source or motion of the observer. ...
출처: en.wikipedia.org/wiki/Doppler_shift
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| Doppler shift |
The Doppler shift (or Doppler Effect) is an increase or decrease in wavelength as the object emitting the wave moves relative to the observer. For example, a train whistle seems to be higher in pitch when the train is approaching you (the waves are compressed, shortening the wavelength), and lower in pitch when it is traveling away from you (the waves are elongated, lengthening the wavelength). The same thing happens with light waves when the light source is coming or going relative to us. ...
출처: www.enchantedlearning.com/subjects/astronomy/gloss...
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| Doppler shift |
The change in observed frequency of wave energy due to the relative motion of the observer and wave source. For example, as a train approaches your location, you hear a higher pitch sound. After the train has passed your location, you will hear a lower pitch sound. The Doppler radar uses this change in frequency to determine the velocity and direction of the wind.
출처: www.srh.weather.gov/srh/jetstream/append/glossary_...
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| Doppler shift |
The magnitude of the perceived change in the frequency of a sound due to the Doppler effect.
출처: developer.apple.com/documentation/mac/Sprockets/Ga...
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