You might see this as a wireframe cube rotating in 3d space, complete with perspective effects. However, you can, either by an effort of will, or chance, make the 'back' face (the smaller square) appear to become the 'front' face, and vice versa. If you succeed in this, or you started out seeing it that way, then the object appears to distort strangely as it rotates!

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    Last updated: 10.06.1998

    (c) 1998 by Peter Walser / pwalser@iiic.ethz.ch