this post was submitted on 30 Apr 2024
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xkcd

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xkcd #2926: Doppler Effect (imgs.xkcd.com)
submitted 8 months ago by randomaccount43543 to c/xkcd
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https://xkcd.com/2926

Alt text:

The Doppler effect is a mysterious wavelength-shifting phenomenon which seems to primarily affect sirens, which is why the ๐Ÿšจ emoji is red.

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[โ€“] [email protected] 7 points 8 months ago

Are you sure you didn't mean this one?

img

TIL that wasn't actually an official one, hrm.:-|