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@physicsufo As a fun aside, ever heard of this? https://t.co/yeQCAxhZN0
@physicsufo As a fun aside, ever heard of this? https://t.co/yeQCAxhZN0
I have an optics joke, but without photons. Actually it is not a joke😊. https://t.co/zMZywod3HS Mandel Sachs (1927-2012). https://t.co/O35K97Mgon