Open Thread: Thin-film interference


Apparently when oil on water makes rainbows, it's known as thin-film interference.  (The oil is the thin film.)  Picture was taken two and a half months ago, about halfway down the hill from my house.

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We have special open threads set aside for discussing various movies and shows, said discussions including plain text spoilers.  These are the current ones:
   ● Game of Thrones
   ● Avengers: Endgame
   ● Captain Marvel

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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 of us upon us, so 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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