Science Memes

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Get scattered (mander.xyz)

submitted 4 months ago by [email protected] to c/[email protected]

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[–] [email protected] 8 points 4 months ago* (last edited 4 months ago) (1 children)

There is a very small amount of red shift. If you were standing on the equator watching a sunset, then your radial velocity relative to the sun is only ~461m/s. So the green light from the sun 550nm would be red shifted by +0.0008nm. That little red shift wouldn't be noticeable. However, as the sun sets there's a lot more atmosphere in the way, which scatters blue light more than red light (Why the sky is blue). Also in a sunrise you are moving towards the sun, so sunrises would be blue! :P

[–] [email protected] 1 points 4 months ago (1 children)

Are you sure those numbers are right? The proportions of 550nm/0.08nm and c/461m/s are very different.

[–] [email protected] 3 points 4 months ago

Oops you're right missed a few zeros.