Light received by an observer is affected if the observer or the source are moving towards or away from one another. This is the Doppler Effect.
This is sort of like a race car.
As it's approaching you, its noise sounds higher in pitch, and lower in pitch as it's moving away from you.
Light waves - just like sound waves - are affected by relative movement between the observer and source.
When the observer is moving away from the light source, the light is shifted to the red end of the light spectrum. The light waves are "stretched". There is further between the peaks of the wave.
So, the wavelength increases. That means a shift from blue to red in the spectrum.
By convention, the shift towards longer wavelengths is called a redshift.
In fact, red light could be shifted to infrared.
"Redshift" just means a change in the observed light towards longer wavelengths.
When the observer is moving towards the light source, th light shifts to the blue end of the light spectrum. We call that a blueshift.
Redshifts can also be caused by the effect of gravity.
Answer2:
Redshift by gravity is F =mGM/r2= vp/r
vp/r=vp/ct=(v/c)p/t = (v/c)mv/t = (v/c)ma.
Gravity creates the velocity v and v/c is the "redshift" due to gravity v and not due to universe expansion of the recession of the body. The redshift of the earth is v/c = 30k/300M = 1/10k.
The opposite of the red shift is the purple shift.
Redshift and blueshift refer to a change in frequency of light we receive from distant objects (stars, galaxies, etc.) The light can turn different colors, and purple is one of them. However, no matter what the color the light changes to, the technical term is always "redshift" if the frequency of the light decreases (normally indicating that the object is moving away from us), and "blueshift" if it increases (normally indicating that the object is moving towards us). Blue shift and purple shift would mean the same thing because the spectrum is one-dimensional. It's like if you are in Boston, a shift towards Chicago is the same as a shift towards San Francisco. Obviously, a purple shift is a super blue shift.
Red and blue light will not absorb the same light. Red objects reflect red light and absorb other colors, while blue objects reflect blue light and absorb other colors.
Acid turns blue litmus red and maintains red litmus at the same color.
The solvent in which the absorbing species is dissolved also has an effect on the spectrum of the species. Peaks resulting from n ® p* transitions are shifted to shorter wavelengths (blue shift) with increasing solvent polarity. This arises from increased solvation of the lone pair, which lowers the energy of the n orbital. Often (but not always), the reverse (i.e. red shift) is seen for p ® p* transitions. This is caused by attractive polarisation forces between the solvent and the absorber, which lower the energy levels of both the excited and unexcited states. This effect is greater for the excited state, and so the energy difference between the excited and unexcited states is slightly reduced - resulting in a small red shift. This effect also influences n ® p* transitions but is overshadowed by the blue shift resulting from solvation of lone pairs.
No, red shift and blue shift are opposite phenomena caused by the Doppler effect. Red shift occurs when an object is moving away from the observer, while blue shift occurs when an object is moving towards the observer. It is not possible for an object to exhibit both red shift and blue shift simultaneously.
The opposite of the red shift is the purple shift.
Yes, if the object is spinning there will be red shifts on the half moving away and blue shifts on the half moving closer.This is one way tornadoes are detected using Doppler RADAR, the water droplets on one side of the cloud are moving away (red shift) while those on the other side are moving closer (blue shift), showing that the cloud is rotating.Solid spinning objects act the same and the rotation is detectable with Doppler RADAR.
A blue shift is observed in the spectrum from an object approaching the observer whereas a red shift is observed for a receding object.
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..
Yes there are ... you see when you pres shift+6 and shift+r u can whrite red letters its the same with blue u just go shift+b :)
Blue shift as you get closer because by the Doppler effect, the frequency of the light increases, so the light seems more blue. Using the same logic, there is a red shift for light as you move away from stars.
Radiation from a source moving away from the observer is red-shifted. Radiation from a source moving towards the observer is blue-shifted.
Red shift means that other objects in the universe are moving away and blue shift means they are moving toward you. This helps to tell where these objects came from, and this knowledge helps predict where they are going to.
Redshift and blueshift refer to a change in frequency of light we receive from distant objects (stars, galaxies, etc.) The light can turn different colors, and purple is one of them. However, no matter what the color the light changes to, the technical term is always "redshift" if the frequency of the light decreases (normally indicating that the object is moving away from us), and "blueshift" if it increases (normally indicating that the object is moving towards us). Blue shift and purple shift would mean the same thing because the spectrum is one-dimensional. It's like if you are in Boston, a shift towards Chicago is the same as a shift towards San Francisco. Obviously, a purple shift is a super 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.
that the universe was in 1904 expanding. this was due to the lack of blue shift, therefor it can be deduced that the red shift in orrcuring within the galaxy.