Quote:
Originally Posted by gnomon
Color Slides. Enjoy!
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The Color Slides (posted by GNOMON) are in fact three dimensional pictures. Usually you use an special construction of lenses (similar to eyglasses) to get the effect. But you can also stare at the twin-pictures and try to "overlap" them by squinting with your eyes. (You should look at the pictures with a distance of approximately 45 centimetres.)
Have fun.