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Airman
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When we analyze the light coming from a distant galaxy, we find a particular absorption line with a wavelength of 1118 nm. This same absorption line in light from the sun has a wavelength of 625 nm is this galaxy moving towards us or away from us?
Calculate the magnitude of the velocity of the galaxy relative to us.
I've tried all what I think are the Doppler equations for light, but can't seem to get the right answer.
When I plug in the values to λr = λc/(c − vr), I get 1.32198284 * 10^8 m / s, which the online homework says is wrong.
Calculate the magnitude of the velocity of the galaxy relative to us.
I've tried all what I think are the Doppler equations for light, but can't seem to get the right answer.
When I plug in the values to λr = λc/(c − vr), I get 1.32198284 * 10^8 m / s, which the online homework says is wrong.