The three pink boxes - an optical illusion

These three pink boxes sit on a blue 
and yellow checkerboard pattern.

It's not just an object alone that conveys information - it's also how the object interacts with its environment. These three images show us how our brain uses shadows to gather information about three pink boxes.

If we add shadows underneath the boxes, 
they seem to float.

If we move the position of the shadows, 
the boxes seem to float even higher.

In all of the images, everything remains the same except for the shadows.

That's why you have to beware of the shadows - they can be deceptive.

I found the original shadow illusion on Brad Honeycutt's blog on optical illusions, called, oddly enough, An Optical Illusion. I modified it a bit to show the boxes without shadows.

Floating Boxes Optical Illusion>>

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