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- Fraser_spiral_illusion abstract "The Fraser spiral illusion is an optical illusion that was first described by the British psychologist Sir James Fraser (1863 – 1936) in 1908.The illusion is also known as the false spiral, or by its original name, the twisted cord illusion. The overlapping black arc segments appear to form a spiral; however, the arcs are a series of concentric circles.The visual distortion is produced by combining a regular line pattern (the circles) with misaligned parts (the differently colored strands). Zöllner's illusion and the café wall illusion are based on a similar principle, like many other visual effects, in which a sequence of tilted elements causes the eye to perceive phantom twists and deviations.The illusion is augmented by the spiral components in the checkered background.".
- Fraser_spiral_illusion thumbnail Fraser_spiral.svg?width=300.
- Fraser_spiral_illusion wikiPageExternalLink FrasersSpiral.html.
- Fraser_spiral_illusion wikiPageExternalLink index.html.
- Fraser_spiral_illusion wikiPageID "336451".
- Fraser_spiral_illusion wikiPageLength "1453".
- Fraser_spiral_illusion wikiPageOutDegree "7".
- Fraser_spiral_illusion wikiPageRevisionID "680678642".
- Fraser_spiral_illusion wikiPageWikiLink Café_wall_illusion.
- Fraser_spiral_illusion wikiPageWikiLink Category:Optical_illusions.
- Fraser_spiral_illusion wikiPageWikiLink Mathematics_and_art.
- Fraser_spiral_illusion wikiPageWikiLink Op-art.
- Fraser_spiral_illusion wikiPageWikiLink Op_art.
- Fraser_spiral_illusion wikiPageWikiLink Optical_illusion.
- Fraser_spiral_illusion wikiPageWikiLink Zxc3xb6llners_illusion.
- Fraser_spiral_illusion wikiPageWikiLink Zöllner_illusion.
- Fraser_spiral_illusion wikiPageWikiLink File:Fraser_spiral.svg.
- Fraser_spiral_illusion wikiPageWikiLinkText "Fraser spiral illusion".
- Fraser_spiral_illusion wikiPageWikiLinkText "Fraser spiral".
- Fraser_spiral_illusion hasPhotoCollection Fraser_spiral_illusion.
- Fraser_spiral_illusion wikiPageUsesTemplate Template:Commons.
- Fraser_spiral_illusion wikiPageUsesTemplate Template:Optical_illusions.
- Fraser_spiral_illusion wikiPageUsesTemplate Template:Reflist.
- Fraser_spiral_illusion subject Category:Optical_illusions.
- Fraser_spiral_illusion hypernym Illusion.
- Fraser_spiral_illusion type Film.
- Fraser_spiral_illusion type Illusion.
- Fraser_spiral_illusion comment "The Fraser spiral illusion is an optical illusion that was first described by the British psychologist Sir James Fraser (1863 – 1936) in 1908.The illusion is also known as the false spiral, or by its original name, the twisted cord illusion. The overlapping black arc segments appear to form a spiral; however, the arcs are a series of concentric circles.The visual distortion is produced by combining a regular line pattern (the circles) with misaligned parts (the differently colored strands).".
- Fraser_spiral_illusion label "Fraser spiral illusion".
- Fraser_spiral_illusion sameAs Fraser-Spirale.
- Fraser_spiral_illusion sameAs Spirale_de_Fraser.
- Fraser_spiral_illusion sameAs Fraser-spiraal.
- Fraser_spiral_illusion sameAs m.01xkf3.
- Fraser_spiral_illusion sameAs Fraser_spiral_illüzyonu.
- Fraser_spiral_illusion sameAs Q1451327.
- Fraser_spiral_illusion sameAs Q1451327.
- Fraser_spiral_illusion wasDerivedFrom Fraser_spiral_illusion?oldid=680678642.
- Fraser_spiral_illusion depiction Fraser_spiral.svg.
- Fraser_spiral_illusion isPrimaryTopicOf Fraser_spiral_illusion.