Rings appear to keep rotating clockwise, though this movie consists of four images. (a variant of Mather's four-stroke apparent motion)pic.twitter.com/66BnC9RZdp
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Rings appear to keep rotating clockwise, though this movie consists of four images. (another variant of phenomenal phenomena)pic.twitter.com/me6hVMYGM3
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Rings appear to keep rotating clockwise, though this movie consists of four images. (a variant of reversed phi motion)pic.twitter.com/nUWPcr5oSm
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