Red shift works when galaxies or other bodies are moving father away. the light is stretched, ie it becomes redder. Blue shift is opposite.
Galaxies that are moving away from the sun are red shifted, that is the light from them looks more red to us that it is when it is emitted. This is due to the speed of the galaxy moving away from which in effect stretches out the wavelengths of the light. Red shift is not the method by which galaxies move away from the sun, rather, it is a consequence of it.
If a star is moving towards Earth. The light is seen as 'blue shifted'. As we look at our sun, on the colour spectrum, black lines appear. When looking at distant stars, we can tell if they are moving away from us (Red shift) or getting closer to us (Blue shift). This is because the black lines shift to the red or blue end of the spectrum depending on which direction the star is travelling.
When light of the color red is shone through a glass prism, it refracts, or bends, as it passes from air into the denser glass and then back into air. However, since red light has a longer wavelength compared to other colors, it refracts less than shorter wavelengths like blue or violet. As a result, the red light will emerge from the prism at a slightly different angle but will not produce a spectrum of colors, as it primarily consists of only the red wavelength. Overall, the output will be a beam of red light, maintaining its color but slightly shifted in direction.
We know the Sun rotates because we can watch sunspots on the face of the Sun.
to be blue-shifted and brighter due to the relativistic Doppler effect.
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.
red shifted
Moving away from us
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.
Blue shifted and when it is moving away it is under a red shift.
He noted that light emitted from stars is shifted further toward the red of the electromagnetic spectrum . From this he concluded that the universe was expanding.
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.
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.
They are red shifted.
Red. It's called Redshift When it moves quickly away it's called Blueshift
Sunlight near the horizon (sunrise or sunset) tends to be shifter slightly red (lower) than when the sun is high in the sky.
when a luminous source is relatively moving away, the light emitted from the source is almost stretched (the frequency of the waves decrease). In other words, enough redshift will cause violet light to become red due to a decrease in frequency. Light which is already red will turn to infra-red, microwaves, and radio waves. If the redshift is very very very high (this does not usually happen in the universe), even x-rays and gamma-rays can be red shifted to radio waves. Similarly, when the source is moving relatively closer, the light emitted will be blue shifted: the frequency will increase. This is called the Doppler shift or the Doppler effect.