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As an object moves away from you, the wavelength of light appears to lengthen, known as redshift. This is a result of the Doppler effect, where the motion of the object causes the light waves to stretch out. The further the object moves away, the more stretched out the light waves become.
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What does the wavelength of light tell us about an objects movement?
Assuming the object's moving rapidly enough to affect the light from it observedly: If approaching the light will be biased to blue (higher-f, lower wavelength); If receding, the light will be redder (red-shift), or lower-f, longer wavelength) by Doppler effect. If the true spectrum can be determined then the shift either way can be used to calculate the object's speed relative to the observer (not necessarily its true speed!).
When the wavelength of spectral lines emitted from an object decreases which end of the visible light spectrum does it move toward and what is the objects motion relative to earth?
When the wavelength of spectral lines emitted from an object decreases, it moves towards the violet end of the visible light spectrum. This is known as a blueshift, indicating that the object emitting the light is moving towards Earth.
What does the blue shift in the spectrum of light from an object indicate the object is moving?
A blue shift in the spectrum of light from an object would indicate that the object is moving towards the observer. The blue shift indicates that the object is under centripetal force. The object may not be moving toward the center if it is balanced by centrifugal force (repulsion) from the center.
When the wavelength of the spectral line emitted from an object decreases which end of the visible light spectrum does it move toward and what is the object's motion relative to Earth?
If the wavelength decreases, the spectral line moves towards the blue end of the visible light spectrum. This phenomenon is known as blue shift, indicating that the object is moving towards Earth.
What does the term blue shift refer to?
Blue shift refers to the phenomenon where the light or other electromagnetic radiation from an object shifts towards shorter wavelengths, often resulting in a blue shift in the spectrum. This can occur when an object is moving towards an observer, causing a compression of the waves and a shift towards the blue end of the spectrum.
Can an object vibrate at the wavelength of light?
No object can vibrate at the wavelength of light. wavelength of light depends on the intensity of light and electron movements.
Which has a larger wavelength a slow moving photon or a fast moving golf ball?
A slow moving photon has a longer wavelength compared to a fast moving golf ball. Wavelength is inversely proportional to speed, so the slower the object, the longer the wavelength.
How does a red shift from a blue shift?
A red shift shows us that a object is moving away, while a blue shift shows us an object is moving toward us. Light that has been 'red shifted' has a longer wavelength when it reaches our eyes/telescopes/etc. than it had when it left the object. Light that has been 'blue shifted' now has a shorter wavelength. The reason stretching the wavelength is known as 'red shifting' is that, in the visible spectrum, red light has the longest wavelength. Blue light has a much shorter wavelength than red so when the wavelength is compressed, we call it blue shifting.
What does the wavelength of light tell us about an objects movement?
Assuming the object's moving rapidly enough to affect the light from it observedly: If approaching the light will be biased to blue (higher-f, lower wavelength); If receding, the light will be redder (red-shift), or lower-f, longer wavelength) by Doppler effect. If the true spectrum can be determined then the shift either way can be used to calculate the object's speed relative to the observer (not necessarily its true speed!).
How can astronomers determine whether a star is moving towards or away from earth?
Astronomers determine whether a star is moving toward or away from the Earth via the Doppler effect. Imagine a motorcycle moving past you. As it drives towards you, it has a higher frequency, and a lower frequency when it drives away. The same thing happens with light. As an object moves towards us, its light has a higher frequency and lower wavelength - this is called blueshift. As an object moves away from us, its light has a lower frequency and higher wavelength - this is called redshift.
How can astronomers determine whether star is moving toward or away from earth?
Astronomers determine whether a star is moving toward or away from the Earth via the Doppler effect. Imagine a motorcycle moving past you. As it drives towards you, it has a higher frequency, and a lower frequency when it drives away. The same thing happens with light. As an object moves towards us, its light has a higher frequency and lower wavelength - this is called blueshift. As an object moves away from us, its light has a lower frequency and higher wavelength - this is called redshift.
The wavelength of light used to observe an object must be ... than the object itself?
The wavelength of light used to observe an object must be shorter than the size of the object itself.
Why is the statement the color of an object depends on the wavelengths of light it absords inaccurate?
...because the colour of an object depends on the wavelength of light it reflects, or the wavelength of light it emits.
When the wavelength of spectral lines emitted from an object decreases which end of the visible light spectrum does it move toward and what is the objects motion relative to earth?
When the wavelength of spectral lines emitted from an object decreases, it moves towards the violet end of the visible light spectrum. This is known as a blueshift, indicating that the object emitting the light is moving towards Earth.
What does the blue shift in the spectrum of light from an object indicate the object is moving?
A blue shift in the spectrum of light from an object would indicate that the object is moving towards the observer. The blue shift indicates that the object is under centripetal force. The object may not be moving toward the center if it is balanced by centrifugal force (repulsion) from the center.
When the wavelength of the spectral line emitted from an object decreases which end of the visible light spectrum does it move toward and what is the object's motion relative to Earth?
If the wavelength decreases, the spectral line moves towards the blue end of the visible light spectrum. This phenomenon is known as blue shift, indicating that the object is moving towards Earth.
How are red-shifted and blue-shifted waves different?
The "doppler effect" (see link below) describes what happens to an observer who is moving toward or away for the source of any type of propagation wave such as light or sound.If we are moving rapidly toward any object which is transmitting an electromagnetic wave - or if it is moving toward us - the waves are "compressed" and we perceive them to be of a higher frequency than was originally emitted. With light, "higher frequency" means "more bluish", while "lower frequency" means "more reddish".So scientists refer to the increasing wave frequency as a "blue shift", while a decreasing frequency, meaning movement away from us, is a "red shift".
