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If you were on a plant looking into the stars the sun would be blue shifted. When looking up at the sky we see the sun moving towards us making it look smaller.
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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.
If a star is moving toward Earth it is?
blue shifted
Why is the sky blue at midday and red at sunset?
Blue sky is due to 'Rayleigh scattering', which is 'blue shift' of the light (a Doppler 'compression' effect) on interaction with the particles forming the ionosphere and atmosphere. Red shift it when the atmosphere is rotating away from the sun's light so the waves are red shifted (a Doppler 'dilation' or extension effect). The scientific basis of this is assumed and considered as well understood by most but in fact is not. For instance there is sometimes a 'green flash' as the sun sets. We do not know precisely what causes it.
How do red and blue shift show movement of objects in space?
If the distance between us and a object emitting a wave (sound or light) is increasing, then the wavelength of the wave it emits will be red-shifted. If the distance is decreasing, it will be blue-shifted. This is true for a car driving towards us with its horn blaring, or a distant galaxy emitting hydrogen lines.
How does the red star and the blue star compare to the sun?
Our Sun is basically yellow. Our Sun's surface temperature is higher than that of a red star, and lower than that of a blue star.Other than that, it's hard to make comparisons, since both red stars and blue stars come in VERY different sizes.
How do we know sun rotates?
We know the Sun rotates because we can watch sunspots on the face of the Sun.
How is the red shift different than the blue shift?
Radiation from a source moving away from the observer is red-shifted. Radiation from a source moving towards the observer is blue-shifted.
Why is the west limb of the sun red-shifted and the east limb blue-shifted?
Because the sun is rotating. So its west limb is moving away from us and its east limb is moving toward us ... the exact conditions required in order to shift the emission spectrum.
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.
If a star is moving toward Earth it is?
blue shifted
Is the sun hotter or cooler than red and blue stars?
The sun is hotter than red stars but cooler than blue stars,
Why are the spectra of galaxies shifted towards the red end?
Because - in most cases - they are moving away from us.However, the Andromeda Galaxy is blue shifted showing it is moving towards us.
What common principle do red and blue shifts share?
Both the Red and Blue shifts are qualities of the doppler effect. Using the example of a speed of light (SOL) traveler speeding along at 186,000 miles in one second, to or from Earth, the SOL traveler would be perceived by an individual on Earth as being in motion via a shift in light's radiated wavelength toward the blue of red spectrum respectively. Another way of thinking about this is that the wavelength of light, to or from Earth, would be compressed (blue shifted) or dilated (red shifted). Alternatively the SOL traveler should observe an individual on Earth as being at rest (blue or red shifted) relative to their own SOL motion to or from Earth.
Why is the sky blue at midday and red at sunset?
Blue sky is due to 'Rayleigh scattering', which is 'blue shift' of the light (a Doppler 'compression' effect) on interaction with the particles forming the ionosphere and atmosphere. Red shift it when the atmosphere is rotating away from the sun's light so the waves are red shifted (a Doppler 'dilation' or extension effect). The scientific basis of this is assumed and considered as well understood by most but in fact is not. For instance there is sometimes a 'green flash' as the sun sets. We do not know precisely what causes it.
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.
How does blue and red shift help us understand the changes of the universe?
Red shift has confirmed the expansion of universe. Both red and blue shift at the edges of the sun has confirmed the spin of sun..
Is an object that is not moving relative to Earth a blue shift?
No, an object not moving relative to Earth is not a blue shifted object. With no relative motion, an object will not be subject to Doppler effect and will not red or blue shift. For an object to be blue shifted, the distance between the object and Earth must be decreasing. The object must be closing on Earth or vice versa.
