Tag: Penrose stairs paradox

• scienceisbeauty: Dizzy.A 3D-printed version of the Penrose Triangle illusion, created with partial inverted cubes. (The 3D model is available under the “Attribution/Non-Commercial/Share-Alike” license here) By Chylld (Own work) [CC-BY-SA-3.0], via Wikimedia Commons

  Tuesday, February 25th — 2014:02:25

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