@unintuitive_universe: A black-and-white disc that produces color when spun — no color ink involved. Benham's top, 1894. Your own retina builds the hue. Original source: #perception #opticalillusion #neuroscience #biology #benhamstop #Science Read the full story on The Unintuitive Universe: https://www.unintuitiveuniverse.com/articles/the-benhams-top-paradox-how-flickering-black-and-white-arcs-force-the-retina-to--1835/?utm_source=omniposter&utm_medium=video&utm_campaign=video_adaptation&utm_content=video_279

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Monday 19 October 2026 19:10:41 GMT