A Moment of Blindness
Find your blind spot. In style.
This has been through 3 iterations now. The original duff one is a static image, where nothing moves, and requires plenty of moving to get right. Realising the weakness of the original, I created the "Find your blind spot" animation on the old optical illusions page.
This NEW IMPROVED version is bigger, so it looks even more scary when the thing vanishes into
First of all close your LEFT eye. Keep it close, and focus your remaining eye (right unless you're a cyclops) on the orange star, and watch in sheer horror as the bright green planet disappears before your very eyes! If you don't notice the effect after around 5 seconds, try to sit further or closer to the screen. Also try to make sure your head isn't tilted where one ear is higher than the other.