Akiyoshi Kitaoka Retweeted 岐阜市科学館【非公式】
Fraser illusion (spiral illusion of the Fraser illusion)https://twitter.com/gifukagaku/status/1035101263975706625 …
Akiyoshi Kitaoka added,
3:05 AM - 30 Aug 2018
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0 retweets
5 likes
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