This image is not available for purchase in your country.

Delboeuf illusion

Delboeuf illusion

T478/0434

Rights Managed

This image is not available for purchase in your country.

Please contact your Account Manager if you have any query.

Credit

SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY

Caption

Delboeuf illusion. An illusion created by the Belgian philosopher Franz Joseph Delboeuf. The two red circles on the left have the same diameter, as do the two red circles on the right. However, they appear to differ in diameter within the two pairings. This is a result of the blue circles that are connected to each of them. An effect known as assimilation causes the brain to reduce the perceived distance between neighbouring objects, and hence view the red circles as larger or smaller according to the placement of the blue circles.

Release details

Model release not required. Property release not required.

 {{ i.shot_duration ? i.shot_duration + ' ' : '' }}{{ i.shot_uhd ? '4K ' : i.hires ? 'HD ' : '' }}{{ i.spl_number }} R{{ i.license }}

  • Add to board
  • Similar {{ mediaType(i) }}