This great picture shows some F18 aircraft almost touching, how many are there? Image source - flycorvair
If you look at these two round patterns one looks like it is popping in and the other is popping out. If you follow one of them around it will change from an innie to an outie, but this is done solely by your brain, the shapes do not change. Crazy isn't it?
We found these great, well timed photos, on the internet giving the illusion of the sun going through a hoop. We loved it so much we decided to animate it. What do you think? Original image source unknown.
Today we have added a new artist to our galleries. It is the amazing work of John Langdon. Click on the optical.
Firstly, the only thing changing in this animation is the dark bar moving across. So can you see the four different shades of blue? Now what happens when the bar covers two adjacent shades?
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