As a web designer and a graphic designer an understanding of human visual perception is important. The use of a contrasting color to draw the users eye to a particular area is a simple example of how we can make use of the perception of contrast

However human perception is not always as straight forward! Take these 2 examples

The St Louis Arch

The Arch is as high as it is wide ..get a ruler out and measure it if you don’t believe me!

Then how about this

 

Do you see movement? Well there is none ..this is a completely static illustration!