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The "red shift" (or frequency decrease) indicates that an object is moving away from you. It works just like a radar speed trap.
When applied to stars it shows that some are moving away and others are getting closer. BUT when applied to galaxies ALL (except for a few close neighbors) are moving away ... and the farther away they are, the faster they're going.
What else can I help you with?
What is a Blue shift star?
A blue shift star is a star that appears bluer than normal due to its motion toward Earth, causing a shift of its spectral lines towards the blue end of the spectrum. This phenomenon is known as the Doppler effect and is used in astronomy to study the movement of celestial objects.
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 Doppler?
Doppler |ˈdäplər|Doppler, Johann Christian (1803-53), Austrian physicist. In 1842, he discovered what is now known as the Doppler effect. Doppler effectnoun Physicsan increase (or decrease) in the frequency of sound, light, or other waves as the source and observer move toward (or away from) each other. The effect causes the sudden change in pitch noticeable in a passing siren, as well as the redshift seen by astronomers.
What is the name of the effect that describes how the pitch of a sound seems higher as it gets closer and lower as it gets farther away?
The Doppler effect describes how the pitch of a sound appears to change based on the motion of the source and observer. As a sound source approaches, the frequency of the waves increases, leading to a higher pitch. Conversely, as the source moves away, the frequency decreases, resulting in a lower pitch perception.
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.
Does a star that shows no Doppler shift move?
If there is no observable Doppler shift, then the star is probably not moving very fast. This refers to the component of the star's movement toward us, or away from us - the "sideways" part of the movement can't be determined by the Doppler effect.
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.
When a wave source is moving toward or away from an object the wavelength changes a phenomenon known as the?
The Doppler Effect See related link
Does the Doppler effect only apply to sound waves?
No
Which refers to the change in wavelength tht occurs when an object moves toward or away from a source?
Doppler effect refers to the change in wavelength that occurs when an object moves toward or away from a source.
How is the doopler effect used?
The Doppler effect is useful for and used for detecting objects velocity. The Doppler radar tells whether the object is heading toward or away from you or perpendicular to you.
The apparent shift in the spectrum of a star as it moves toward or away from the earth is explained by the phenomenon known as the?
Doppler effect. This effect causes the wavelengths of light from a star to appear shorter (blueshifted) as it moves towards the Earth and longer (redshifted) as it moves away, providing valuable information about the star's motion in space.
How does a beluga whale determine whether a fish is moving away from it or toward it?
By using the Doppler effect
Will the listener notice the Doppler effect if he or she and the source of the sound are traveling toward each other?
yes
How can astronomers determine whether a star is moving toward or a way from earth?
They can do so by examining the light from the star. Doppler shift can indicate this
If a star is moving toward Earth it is?
If a star is moving toward Earth, it will experience a redshift in its light spectrum due to the Doppler effect. This means that the wavelengths of light will be stretched and appear more red. This effect allows astronomers to measure the speed and direction of a star's movement.
Using the Doppler effect astronomers can determine a stars what?
How close and far something is from you.
