Open Thread: Hubcap Caustic

In optics, a caustic is *looks at definition* um ... well, it's this thing that light does after it hits a curved surface.


Friday Recommendations!  What have you been reading/writing/listening to/playing/watching lately?  Shamelessly self-promote or boost the signal on something you think we should know about - the weekend’s ahead, give us something new to explore!

And, like on all threads: please remember to use the "post new comment" feature rather than the "reply" feature, even when directly replying to someone else!


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