Concentric Circles by Akiyoshi Kitaoka

Estimation 20 July 2015 0 Comments

Concentric Circles by Akiyoshi Kitaoka

Have a look at today’s image that was created by Professor Akiyoshi Kitaoka from Ritsumeikan University in Kyoto, Japan.  We’ve posted images similar to this one in the past, but I thought that it was a pretty good representation of an old optical illusion concept.  Each of the rings are circles, even though they certainly […]

Wavy Hair by Akiyoshi Kitaoka

Motion 30 April 2015 0 Comments

Wavy Hair by Akiyoshi Kitaoka

The circle in the center of this wavy yellow and purple pattern appears to move to the right while the background appears to moving to the left.  The motion effect on this one is incredibly strong for me.  I don’t know if it is the colors, or what, but it certainly seems like an animation […]

Rotating Pieces of Cheese by Akiyoshi Kitaoka

Motion 4 December 2014 0 Comments

Rotating Pieces of Cheese by Akiyoshi Kitaoka

The orange and purple ring appears to rotate clockwise on the green background in a twitching or jerky manner.  The effect is enhanced if you move your eyes rapidly around the image or look away from it briefly and then focus on it again. Compare this effect to another motion illusion created by Professor Kitaoka […]

Rotating Grapes by Akiyoshi Kitaoka

Motion 11 August 2014 0 Comments

Rotating Grapes by Akiyoshi Kitaoka

As you move your eyes around this image, the purple and yellow grapes appear to rotate around in circles.  Be careful with this one, you might start to get a little bit dizzy if you look at it for too long! To see more rotating circles, take a look back at the motion illusion in […]

M&M Bulge Illusion

Miscellaneous 20 March 2014 0 Comments

m&m bulge illusion

Using Legos and two colors of M&Ms, Mary Coffelt, Briena Heller, and Michael McCamy created the following optical illusion at Martinez-Conde and Macknik Laboratories, Barrow Neurological Institute.  The way that the candies are arranged on the checkered Lego pattern, the object appears to bulge even though the surface is flat.  This bulge illusion was originally […]

Moving Arrows Illusion

Motion 4 November 2013 0 Comments

Moving Arrows Optical Illusion

The yellow arrows on the purple background below appear to move independently to the left and the right.  Specifically, the top and bottom rows of arrows seem to have the most significant amount of motion for me.  If you are having trouble getting this static image to move, try staring at it while moving your […]

Eye Rays Motion Optical Illusion

Motion 26 August 2013 2 Comments

Eye Rays by Akiyoshi Kitaoka

Over the past few months, we have had several requests for a mobile version of An Optical Illusion.  We listened.  Now you can view a simplified version of the site on your mobile device.  At the bottom of the layout, you will also have the option to turn the new layout off and view the […]