Andrus Spiral
Illusion
Now look directly at the test picture. The picture should waver slightly in a way similar to a heat shimmer.
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This
illusion lasts for a few brief seconds and is not harmful. Sensitize
your eyes first - by gazing at the moving patterns in the rotating spiral
generator for about 30 seconds. Now look directly at the test picture. The picture should waver slightly in a way similar to a heat shimmer. |