Zöllner illusion

noun Zöll·ner illusion \ˈtsə̄lnə(r)-\

Definition of Zöllner illusion

  1. :  the illusion produced by Zöllner's lines

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Origin and Etymology of zöllner illusion

after Johann K. F. Zöllner †1882 German physicist

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a trip made at another's expense

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