Saturday, November 28, 2009

An Optical Illusion

This postcard arrived today. It came to me from Bertus in Holland. Bertus points out that the card on the front has a bit of an optical illusion to it. If you blur your focus on the card, the image becomes almost three-dimensional, bringing the planets, etc to the front of the card and turning the sky into a distant background. This is a really neat postcard!

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