Optical Illusion Pictures #3

Shimmering Optical Illusion Picture

Here's what to do for this optical illusion picture above:
Look into the center of this spiral for awhile. After a little while, you'll start to see white lines radiating out from the center. Stare into the middle for longer, and blink a few times! You might see some more tricky white flashes, and what they call "scintilation" in the optical illusion world. Pretty cool!

Angels and Bats?

Psychologists used to use images like this to determine if someone was crazy or not. If they saw the bats, they might say that the individual was possessed by the devil! And if they saw the angels, they could also accuse the person of being insane, because they'd say that by not seeing the bats first, you are ignoring the obvious signs of the devil. Eventually the subject would get confused (much like you may be right now) and they'd have the perfect excuse to lock them up in an insane asylum. Sheesh!