| Doppler effect |
A shift in the frequency of an electromagnetic or sound wave due to the relative movement of the source or the observer.
출처: www.ametsoc.org/amsedu/WES/glossary.html
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| Doppler effect |
The change in the observed frequency of a wave in a transmission system caused by a time rate of change in the effective length of the path of travel between the source and the point of observation.
출처: www.fhwa.dot.gov/environment/noise/measure/chap2.h...
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| Doppler effect (phenomenon, principle) |
see under effect.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| Doppler effect |
The change in frequency of waves emitted by an object as it moves. For example, as an emergency vehicle approaches the sirens get louder and as the vehicle moves away the sirens fade out.
출처: inkido.indiana.edu/a100/glossary2.html
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| Doppler effect |
Apparent frequency change of waves which results when the source and recipient of the waves move toward, and then away, from each other. A shift in frequency caused by satellite movement toward or away from your location. When the satellite is coming toward you, the Doppler shift decreases the frequency. When the satellite is going away from you, the frequency increases. Like the waves from the ocean piling up in front of a storm.
출처: www.herrons.com/users/kevin/radio/satellite.html
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