xkcd

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submitted 11 months ago by [email protected] to c/[email protected]

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Alt text:

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

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[–] [email protected] 7 points 11 months ago

Are you sure you didn't mean this one?

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