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When a star or galaxy moves quickly toward an observer the light it emits will appear?
Wiki User
∙ 6y ago
It will be "blue-shifted". That is, the wavelength of the light will appear to be shorter and so more blue.
Wiki User
∙ 6y ago
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Would a light source moving away from Earth appear blue shifted or red shifted?
A red shift indicates an object that is moving away from the observer, and a blue shift indicates an object that is moving toward the observer. Both of these are called Doppler shifts.
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.
Why is there a large ring around the moon tonight?
A ring around the Moon is generally caused by high-altitude ice crystals refracting the moonlight back toward the observer.
Does the speed of light allow the Andromeda Galaxy to emit a blue shift?
There is some blueshift in the Andromeda galaxy as it is moving toward us. The speed of the Andromeda Galaxy relative to the sun is about 300 kilometers per second or about 0.1% the speed of light. The blueshift would be detectable by instruments but not to the human eye.
What direction does the sun moon and stars move across the sky?
Since Earth's surface is rotating toward the east, "fixed" celestial bodies appear to be moving toward the west.
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 are the kinds of curve mirror?
They are: concave (curved away from the observer) convex (curved toward the observer)
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.
Are any galaxies moving toward the Milky Way galaxy?
Yes. The Andromeda Galaxy, our galactic neighbor, is heading toward the Milky Way and is expected to collide with our own galaxy in about 3 billion years.
If light experiences the Doppler effect what will happen to its color?
If light is subject to the Doppler effect, it will change color. The light changes color toward the lower (red) end of the spectrum or the upper (blue) end of the spectrum. Which way the color shifts depends on whether the distance between the source and the observer is increasing or decreasing. Should we find the distance is increasing, the light will be shifted toward the red end of the spectrum. This is called redshift (one word), and astronomers know this well because most all galaxies are speeding away from the Milky Way and have their light shifted toward the red end of the spectrum. If the distance between a source and observer is decreasing, the color of the light will be shifted toward the blue end of the spectrum. In either case, the amount the color is shifted will be determined by the rate the distance between the source and observer is changing. If a galaxy is moving away from the Milky Way, we'll see a shift toward red, and if another galaxy is moving away faster, will see a greater shift in the color of the light from it.
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 happens to a frequency heard when an observer begins toward the stationary source of a sound?
.The frequency increases
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.
Would a light source moving away from Earth appear blue shifted or red shifted?
A red shift indicates an object that is moving away from the observer, and a blue shift indicates an object that is moving toward the observer. Both of these are called Doppler shifts.
Are any of the galaxies moving toward earth?
Yes. Andromeida galaxy.
The change in wave frequency of energy as it moves toward or away from an observer is the?
The Doppler effect. Good luck with your homework.
