Shifting Cube: A Visual Illusion

There are two cubes: a small one and a big one. Or is it just a small cube set up in a corner formed by three planes? Or, perhaps, it's a big cube one of whose corners was cut off?

This applet requires Sun's Java VM 2 which your browser may perceive as a popup. Which it is not. If you want to see the applet work, visit Sun's website at http://www.java.com/en/download/index.jsp, download and install Java VM and enjoy the applet.

Buy this applet
What if applet does not run?

As with the Necker cube, the brain tries to make up for the absence of perspective clues. There are at least a couple of ways to do that. It is easy to make it see either one or the other.

40618242

Supported by