Slowly move away from the screen. Does anything happen?
Do you think the red lines are wavy? Well they arn't.
Once again, these lines are straight as an arrow.
This mind trick fools you into counting one to many prongs on the fork.
Can you tell us what vertical line is longer? Post your answer in our comments.
Another geometry optical illusion. This is an impossible triangle - Part 2.
This is a cool picture done by a good artist.
KST thinks this is a spiral. Do you agree?
Here is a mind trick. Count the legs on the elephant.
Is this a perfect square or not. We think it is.