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Unstable Figures Unstable figures seem to flip from one focus to another allowing equally valid interpretations of the same picture. In the 3 dimensional illusions we can select more than one near point so the image can go inside out or upside down.
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Use the arrow keys or mouse (click and drag) to spin the cube. F1 and F2 will change its size. Are there times when the cube appears to flip inside out and look very strange? Is there any trigger you can discover that switches your view? |
These blocks appear to encase a cube shaped cavity - or is the cube in the upper corner of a hollow box? | Do these arrows point out or in? |
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