Originally posted by G-Man
These are the same shades of grey - save the picture and compare them in a picture editing program.
And in the second one the middle ones are the same size but don't look like they are.
Originally posted by Chieftess
Oh, and my elementary school cafeteria had the grid illusion on the walls as part of the room "decoration".
Err... What do you mean, "coloured version" ?(I know there are colored versions of the first thing. Do you have them available?)
That's the very point of the illusionWait, no way the shades of greay are the same. Ahh! How are they the same?
Originally posted by Cilpot
It looks like the link has a gradient
Anyway, these are all soo cool!!!![]()
Originally posted by Akka
In fact, the illusion is based on our brain being smart
All the illusion works because there is a shadow cast by the big pillar. As there is a shadow our brain automatically assume that everything under it is shadowed, so should not be as dark as we see it. So we "see" that the grey is of a lighter shade than the other in full light.
It's an illusion built on the fact that we are able to automatically understand our surroundings and adapt our perceptions to them![]()