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How to calculate apparent frequency the source is ahead and observer is behind both moving the same direction?
Wiki User
∙ 12y ago
The apparent frequency does not depend on who is in front.
Wiki User
∙ 7y ago
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Does the frequency change if the observer moves?
actually the frequency donot change but apparent change in frequency is observed by the observer...........(may be this help u)
The apparent change in the frequency of a sound emitted by a moving object as it passes a stationary observer is called the what effect?
Doppler effect.
Is the Doppler effect the same as a reflected wave?
No. The Doppler effect is an apparent change in frequency, due to movement, away from towards the observer.
After an approaching ambulance passes a stationary observer what does the frequency of the sound of the siren heard by the observer appear to do?
Soften... It is lower due to the Doppler effect. Decrease =]
What happens when a star's spectrum is redshifted as a result of the Doppler effect?
With respect to light, the Doppler effect refers to the apparent change in the frequency (and wavelength) of electromagnetic radiation due to the relative motion of the source relative to the observer. When the source (i.e. a star) moves AWAY from the observer, there is an apparent rarefaction (expansion) in the wavelength of emitted light (i.e. frequency decreases), causing a shift in the emission spectrum towards the red side. This is known as redshifting --> the star is moving away from the observer. The opposite happens in blueshift, when the source moves towards the observer.
What is the Doppler effect on sound?
The Doppler effect is a phenomenon observed whenever the source of waves is moving with respect to an observer. The Doppler effect can be described as the effect produced by a moving source of waves in which there is an apparent upward shift in frequency for the observer and the source are approaching and an apparent downward shift in frequency when the observer and the source is receding. The Doppler effect can be observed to occur with all types of waves - most notably water waves, sound waves, and light waves.
What is an apparent brightness?
An apparent brightness is the brightness of a star as measured by an observer.
How does the relative motion of a motorcycle affect the frequency of the sound heard by an observer on the sidewak?
as the motorcycle approaches the observer, the frequency increases.
Does the Doppler effect have anything to do with medicine?
No. It has to do with sound or light waves (or any other if there is). It is the apparent change in frequency of a wave as the observer and source move toward or apart from each other. EX: think of a car when it passes by. the frequency of the wave changes and it gets louder then quieter. You would be observer and the source would be wherever the sound comes from. Hope this helps :)
How does the frequency measured in front of the source appear to the observer compared to the frequency measured from behind?
The frequencies are the same, unless the source is moving relative to the observer.
Which direction will be sun rise for an observer in NY?
Depending on the date, anywhere from "southeast" in the fall or winter to "northeast" in the spring or summer. If you can tell me the date and your location, I can calculate the precise direction of the sunrise for you.
What is an apparent in frequency of a sound source that moves relative to an observer?
The Doppler Effect. It's a change in frequency cause by the motion of the sound source, the motion of the listener, or both. As a source of sound approaches, observers hear a higher frequency. When the sound source moves away, observers hear a lower frequency. This effect was discovered by an Austrian scientist named Christian Doppler. Example: An ambulance siren. As the ambulance approaches a stationary observer, the frequency seems to increase. As the ambulance moves farther away, the loudness of the siren seems to decrease.
