What does café-wall illusion mean?

café-wall illusion

Word Rarity Rare

Frequency: Zipf frequency 3.52 in modern English

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noun

"Staggered filled squares produce the café-wall illusion."
"We still see the tapered tiers of the café-wall illusion even after we know their defining lines to be parallel, but we now accept our earlier impression as a naïve, less tangible, or less valid view."
"The famous café-wall illusion is a variation of the shifted-chessboard or Münsterberg illusion, 1897, in which the lines between the rectangles are black instead of gray."

café-wall illusions (plural)

How to pronounce café-wall illusion

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