The Necker cube is an ambiguous line drawing.

The Necker cube has shed light on the human visual system.

A classic example of point-of-view creating an ambiguous image is the Necker cube.

But the novel is far more complex than a simple circle and compares more closely with a Necker cube.

It is more a matter of allowing the reader to experience perceptual shifts in the same way that a Necker cube can be viewed.

The best known example is the Necker cube whose 12 lines can be perceived in one of two different ways in depth.

He is best remembered for devising the optical illusion now known as the Necker cube.

You know they can hold both aspects of a Necker cube in their heads at the same time?

He appears to be constructing it from a diagram of a Necker cube at his feet with the intersecting lines circled.

Necker cube A personality test with a difference.