Matches in DBpedia 2015-10 for { ?s ?p "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)."@en }
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- 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).".