2020年の錯視デザインカレンダーを作った。pic.twitter.com/lD98jnef8F
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Instances of the Oppel-Kundt illusion and the Ebbinghaus (Titchener) illusion using the mascot of our college (Psychology, Ritsumeikan University, Japan)
Oh thanks! I’d never heard of the Oppel-Kundt illusion until now!
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