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Ponzo illusion
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
thumb
Etymology
First demonstrated by the Italian psychologist Mario Ponzo (1882–1960) in 1911.
Noun
An optical illusion whereby a horizontal bar looks wider when farther up a picture of railroad tracks than when lower.
Translations
the illusion
Further reading
en eponyms