Illusory Blue Dots by Akiyoshi Kitaoka

Afterimage 13 May 2016 0 Comments

Illusory Blue Dots by Akiyoshi Kitaoka

In this variant of the Hermann grid illusion created by Professor Akiyoshi Kitaoka, illusory blue dots can be seen in the white circles where the squares intersect.  This phenomenon was first reported in 1870 by Germany physiologist Ludimar Hermann.  The blue dots cannot be seen if you look directly at one of the white circles.  […]

Impossible Squares

Animation,Impossible 15 June 2015 0 Comments

Impossible Squares

In this animation, a person passes a straight rod through two squares in what appears to be an impossible manner.  At the end of the animation, the squares are turned slightly to reveal how the trick was pulled off.

Squaring the Circle

Video 12 February 2015 1 Comment

Squaring the Circle

This interesting sculpture called Squaring the Circle was created in 2013 by Troika, the UK-based artist group consisting of Conny Freyer, Eva Rucki and Sebastien Noel.  Watch the video below shot at the Kohn Gallery in Los Angeles, California to see how these CNC bent steel tubes (measuring 54 3/4 x 54 3/4 x 30 1/2 inches) form […]

Green Sqwear by Alexis Facca

Anamorphosis 1 May 2014 0 Comments

Green Sqwear by Alexis Facca

This anamorphic cube was created in 2011 by Alexis Facca for a promotion for Sqwear, an online fashion store exclusively dedicated to young designers.  The cube required fourteen cans of spray paint to complete and was painted across several walls, the floor, and the ceiling.  Facca is originally from France, but currently resides in Belgium. […]

Pinna’s Illusory Intertwining Effect

Estimation 9 December 2013 0 Comments

Pinna's illusory intertwining effect

This figure looks like a warped spiral made up of white and black squares on a gray background.  If you examine it more closely, however, you will find that it is actually made up of four concentric circles.  This illusion was first described by Baingio Pinna and Richard L Gregory in a 2002 article titled […]

Checkerboard Twisted Cord Illusion

Estimation 30 November 2012 0 Comments

Checkerboard Twisted Cord Optical Illusion

All of the edges in this image are straight and either horizontal, vertical, or at a 45° angle.  Does it appear that way to you? Edit:  I just also noticed that if you move your scroll bar up and down when viewing this image it appears to have some motion elements to it.

Moving Square Illusion

Video 11 October 2012 0 Comments

Moving Squares Illusion by Brusspup

Using an LCD screen, a transparent overlay and four yellow Post-It Notes, Brusspup creates his own version of the moving square illusion. According to Brusspup: There are 2 sets of lines moving back and forth perpendicularly but when the paper squares are placed on the screen the lines suddenly appear to be a square moving […]