English Explanatory Dictionary

Delboeuf illusion

English dictionary entry

Meanings

noun
  1. An optical illusion of relative size perception, usually illustrated by two discs of identical size, one of which is surrounded by a ring.

Word forms

Delboeuf illusion Delboeuf illusions

Etymology

Discovered in 1865 by the Belgian scientist Joseph Remi Leopold Delboeuf (1831–1896).

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