The Jastrow illusion is an optical illusion discovered by the American psychologist Joseph Jastrow in 1889. In this illustration, the two figures are identical, although the lower one appears to be larger. The short edge of the upper figure is compared to the long side of the lower one.
Famous quotes containing the word illusion:
“It isn’t safe to sit in judgment upon another person’s illusion when you are not on the inside. While you are thinking it is a dream, he may be knowing it is a planet.”
—Mark Twain [Samuel Langhorne Clemens] (1835–1910)