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Appears on these pages

  • Benham's Top

    Benham's top, also called Benham's disk, is named after the English toymaker Charles Benham...

  • Fechner Color

    The Fechner color effect is an illusion of color seen when looking at certain rapidly changing...

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current21:30, April 15, 2014Thumbnail for version as of 21:30, April 15, 2014467 × 464 (246 KB)EndlessLemon (Talk | contribs)

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