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Friday Fun Thread for November 11, 2022

Be advised; this thread is not for serious in depth discussion of weighty topics (we have a link for that), this thread is not for anything Culture War related. This thread is for Fun. You got jokes? Share 'em. You got silly questions? Ask 'em.

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A lens does a Fourier conversion: it maps directions (of the incoming rays) into locations (on the focal plane), summing stuff up.

https://physics.stackexchange.com/questions/596774/why-can-a-lens-be-described-by-a-fourier-transform I guess.