These rows are perfectly horizontal and are not moving. A mind-bending anomalous motion variation of the Café wall illusion by Akiyoshi Kitaoka.

Source: http://www.psy.ritsumei.ac.jp/akitaoka/motion30e.html

Image transcription: Rows of black and white zigzag patterns forming 2x2 checkerboards on a grey background create an optical illusion of warping and motion.

(Originally published on mastodon.social: 2024-02-16)

Dragonfly liftoff captured at 5000 frames per second.

Video credit: Joris Schaap / CC BY 3.0
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