Rings appear to rotate clockwise, though they actually rotate counterclockwise. (a demo of reversed phi (Anstis, 1970))pic.twitter.com/2ZdaXjwLmX
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My webpage for reversed phi and related motion phenomena (motion illusion induced by changes in lumimnance) http://www.psy.ritsumei.ac.jp/~akitaoka/reversephi.html …
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