0
What happens when the pitch of a sound seems to changeas the sound source moves toward an observer?
Wiki User
∙ 11y ago
In that situation, what happens is that the pitch of sound seems to change as
the sound source moves radially with respect to the observer. When the source
approaches the observer, the pitch rises, whereas if the source should recede,
then the pitch would fall.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
What happens to a frequency heard when an observer begins toward the stationary source of a sound?
.The frequency increases
What causes a blue shift?
Radial motion of the source toward the observer.
What phenomenon is the basis of police radar and makes light or sound waves increase in frequency if the source is moving toward the observer and decrease if the source is moving away?
Its called the doppler effect.
What are the kinds of curve mirror?
They are: concave (curved away from the observer) convex (curved toward the observer)
What causes light to be shifted?
It is the Doppler effect and is caused by the light source or the observer moving towards or away from each other. In basic terms, if the two are moving toward each other then the light waves arrive at the observer more closely packed than when they left the source. That is, the wavelength is shorter and the light becomes shifted towards the blue end of the spectrum. If the two source and observer are moving apart then you get a red shift.This is analogous to the pitch of a siren which drops as the vehicle passes you and starts receding from you.
What happens to a frequency heard when an observer begins toward the stationary source of a sound?
.The frequency increases
What are the four types in Doppler effect?
Frequency change when 1)Source moves toward the observer 2)Source moves away from the observer 3)Observer moves toward sourse 4)Observer move away from the sourse, otherthan these observer and sourse moving away or towards each other.
What causes a blue shift?
Radial motion of the source toward the observer.
Why doesn't the Doppler shift appear when an observer moves toward the source?
Doppler's effect does not happen when the observer is moving towards the source because unlike the source when observer moves forward the waves are not compressed and they pass the observer without being compressed and since the doppler effect is due to the Change in wavelength of the wave, it fails to occur.
What is the perception in the change of a sound's feequency as the source moves?
when the source moves toward stationary observer the frequency increase because wavelength gets shorter.
An apparent shift in the wavelength of light emmited by a light source moving toward or away from an observer is known as?
The Doppler Effect.
What is the velocity at which a mooving observer can see the red light as green Doppler?
Observer would have to move toward the light source at about 1/5 the speed of light. A little over 37,000 miles/sec.
Would there be a Doppler effect if the source of a wave is stationary and the observer is the one in motion?
Yes. The observer frequency fo= f( v + vo)/(v -vs) where f is the signal frequency, v is the speed of wave and vo is the speed of the observer towards the signal and vs is the speed of the signal toward the observer.
What does it mean if a star is experiencing a red shift?
redshift is what happens when visible light gets longer in wavelength, thus shifting toward the red end of the spectrum of visible light. This is a phenomenon that occurs when the light source is moving away from the observer.
What phenomenon is the basis of police radar and makes light or sound waves increase in frequency if the source is moving toward the observer and decrease if the source is moving away?
Its called the doppler effect.
What happens if the source of a sound is toward you at a high rate of speed?
If the source of a sound is moving towards you, then the pitch of the soundyou hear is higher than the pitch of sound that the source is actually emitting.The rate of speed doesn't matter.BTW ... this also happens if you are moving toward the source.
What are the kinds of curve mirror?
They are: concave (curved away from the observer) convex (curved toward the observer)
