I'm still trying to work on that first one you posted, @wadcorp. I can see the spheres the same colour, but only one at a time. Haven't been able to see them all the same colour at the same time. Have you?
If you stare at the center of the grid, the crazy peripheries begin to fix themselves. It is thought that the brain has a bias towards order and regular patterns and will actually go about "fixing" the problems on the sides.
Whoa. Those dancing dots!
I'm still trying to work on that first one you posted, @wadcorp. I can see the spheres the same colour, but only one at a time. Haven't been able to see them all the same colour at the same time. Have you?
Stare at the image above for a minute, and then take a look at the blank space while blinking.
Which orange circle is bigger?
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Escher, the grandaddy of optical illusionists.
Always liked this one, the never ending stairs
The Ponzo Illusion: which line is bigger?
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Thousand-Hand Dance - Tarian Seribu Tangan
The horizontal lines are parallel.
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How many black dots?
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https://www.youtube.com/watch?v=bgTbvyKyPCE
If you stare at the center of the grid, the crazy peripheries begin to fix themselves. It is thought that the brain has a bias towards order and regular patterns and will actually go about "fixing" the problems on the sides.
.
Notice how when you scroll down it kicks to the left, and when you scroll up it kicks to the right?
Cool!