Delboeuf Illusion
Delboeuf Illusion
The red circles have the same radius. However, their sizes seem to vary, depending on the sizes of the blue circles. This illusion was first discovered by Franz Joseph Delbouf, a Belgian philosopher and expert on hypnosis.
External Links
External Links
Permanent Citation
Permanent Citation
Michael Schreiber
"Delboeuf Illusion"
http://demonstrations.wolfram.com/DelboeufIllusion/
Wolfram Demonstrations Project
Published: September 28, 2007