Archive for September, 2008

The spinning dancer

(Wednesday, September 17th, 2008)

Spinning dancer

Spinning dancer

As a matter of fact, this optical illusion from Japanese designer Nobuyuki Kayahara comes from the total lack of 3rd dimension data in the image. Nobody can formally determine the rotation direction of the dancer. But the brain must take a decision. So, it chooses, but can be easily perturbated and changes its mind. Then, the dancer starts spinning in the other direction (some people may not be able to see the change, probably because their brain has some kind of preference).

Source: NY Times.

One optical illusion per week

(Sunday, September 14th, 2008)

If you want to get one optical illusion per week, come and visit us every Wednesday.

Or even better, click on the RSS link Syndicate this site using RSS to subscribe. You will be informed as soon as it is published.

Hering illusions

(Sunday, September 14th, 2008)

This optical illusion is based on the crossing of lines and curves. Straight lines appear curved.


Hering - Optical illusion

Samsung is only an illusion

(Wednesday, September 3rd, 2008)

Or so it would seem that advertisers want you to understand, if you follow this ad from Samsung. In less than 2 minutes, we’re guided through 10 good optical illusions.

Link to YouTube video

Following in the footsteps of…

(Tuesday, September 2nd, 2008)

This web site will present optical illusions from all origins.

All you need to know for now is that it is working from what originated in Roumazeilles.net optical illusions category of posts. They were worth their own web site, no?

Nota: French version.


Copyright (C) 2008-2015 - Yves Roumazeilles (all rights reserved)

Latest update: 22-oct-15