Chuck-Wiki: Undulations in 3d |
How to view cross-eyed stereograms: You can get a nice 3d effect by crossing your eyes slightly so that it creates a 3rd image in the center. It takes a little practice to focus on the combined 3rd image in the middle, but once you do you can start to get a perception of depth.
More info about how they were created on archive.org Undulicious!
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