411 REFERENCE · Wiktionary
Ames trapezoid
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
thumb|Ames window
Etymology
Discovered by American ophthalmologist Adelbert Ames, Jr. in 1947.
Noun
An optical illusion in which a trapezoid, subdivided into squares to look like a paned window, and made to rotate, appears to be a rectangle.
en Ames window
en eponyms
en Optical illusions