0
The change in wave frequency of energy as it moves toward or away from an observer is the?
Wiki User
∙ 12y ago
The Doppler effect. Good luck with your homework.
Wiki User
∙ 12y 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
Is the Doppler effect the actual change in a stars frequency of a wave?
No. Doppler effect measures relative speed toward or away from the observer, there is no effect on the star itself.
What causes the frequency of light from a moving object to change?
It is the Doppler effect that causes the apparent shift in the frequency of light or sound waves as the source and observer are moving farther apart or closer toward each other. Use the link below for more information.
What are the kinds of curve mirror?
They are: concave (curved away from the observer) convex (curved 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 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 happens to a frequency heard when an observer begins toward the stationary source of a sound?
.The frequency increases
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.
Is the Doppler effect the actual change in a stars frequency of a wave?
No. Doppler effect measures relative speed toward or away from the observer, there is no effect on the star itself.
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.
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 :)
What causes the frequency of light from a moving object to change?
It is the Doppler effect that causes the apparent shift in the frequency of light or sound waves as the source and observer are moving farther apart or closer toward each other. Use the link below for more information.
If light always travels at the same speed how can its color shift to red due to the Doppler effect?
As you mention light speed is constant. Light speed equals to its wavelength times its frequency. c = lambda * freq As the light source travels toward the observer, in such high speeds comparable to the light speed relative to the observer, the later emitted light waves pile up behind the earlier emitted light waves as they all travel together toward the observer, causing a visible shift (higher) in the frequency of the received waves as seen by the observer.
How can the Doppler effect determine if things are moving towards a distant galaxy or away from one?
Light had properties of frequency that related to colour. It is apparently contract in the direction moving toward the observer (higher frequency-short wavelength) and apparently elongated in the direction moving away from observer (lower frequency-high wavelength). What moving toward us is tend to be look more blue than usual (blue shift) and what away from us is redder than usual (red shift).
What is the evidence of motion of the universe?
The most important piece of evidence that shows that the universe is in motion is the Doppler Effect, also termed the red shift. This basically means that objects headed away the observer will have their light bent toward the "red" (lower frequency) side of the light spectrum while objects headed toward the observer will have their light bent toward the "blue" (higher frequency) end of the spectrum. By using the Doppler Effect we are able to that the majority of the universe is in motion, expanding outward.
What are the kinds of curve mirror?
They are: concave (curved away from the observer) convex (curved 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.
