Is it black on white, or white on black?

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IS IT BLACK ON WHITE,

OR WHITE ON BLACK?

6/08 - Spielhaus June, an aim to post pattern based designs in the month of June.

This is a very simple pattern utilising a thin but high rectangle in alternating black and white. When it is stared at it can cause a visual illusion as the eyes try to determine whether it is a black shape on a white background, or a white shape on a black background. It is equal!