Stare at the four black dots in the center of the image for 30 - 60 seconds.
Then quickly close your eyes and look at something bright (like a lamp or a window
with sunlight coming through it). You should see a white circle with an image inside it.
Looking at optical illusions on your phone or tablet can be fun
to do, especially if you’re riding on a boat. Just make sure to follow
boat and yacht safety guidelines while looking at your optical
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