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Ebbinghaus illusion
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
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Etymology
Named after its discoverer, the German psychologist Hermann Ebbinghaus (1850–1909).
Noun
An optical illusion whereby a disk appears smaller if surrounded by larger disks than if by smaller.
Translations
the illusion
Further reading
en eponyms