Physics Asked by full of doubts on August 6, 2021
We know, As per Doppler effect, if an object travels with speed close to that of light, if appears red if it goes away from observer and it appears blue if it comes towards the observer.
My question is what will happen if
The object itself is of red color and going away from observer nearly with speed of light
The object is of blue color and coming towards the observer nearly with speed of light.
This is my first day on this platform. I am sorry if i have typed anything wrong.
"Redshift" is really an idiom for "increase in wavelength" and blueshift means "decrease in wavelength. They get their names because red is the largest wavelength of the visible spectrum and blue (near) the shortest.
Answered by Señor O on August 6, 2021
The Doppler effect will shorten any wavelength from a source moving towards the observer (blue shift) and lengthen any wavelength moving away from the observer (red shift). This is true whether the source is emitting wavelengths anywhere within, above, or below the visible spectrum.
Answered by Adrian Howard on August 6, 2021
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