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Doppler Effect
(xkcd.com)
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this post was submitted on 29 Apr 2024
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Yeah I'm no physicist but that ticked me off, the speed of light is the same for any wavelength. As for redshift:
Speed of light isn't a factor in this, also when galaxy's move towards us (like the Andromeda galaxy) it is blueshifted, proving it's not the light that matters, but rather the direction of movement of the source. Proving the doppler effect.