|
Added 1/12/09. Let me first explain what you're looking
at. There is a purple square and inside of it is a spinning gray object. Inside of this spinning gray object is
a circle Now here's what you should do - focus on the white dot in the center of this picture. While you're
doing this you'll still see the circle. What color is the circle? Most people would say that the circle is
purple (or a shade of purple). It's not! Believe it or not, the color of the circle is not purple - its color
is gray. To be more precise, the circle's color is the exact same shade of gray as the spinning object.
(If you need proof that it's gray, here's what you should do. Focus on exactly one of the spinning wings of the gray
object. As you're doing this you'll hopefully be able to see that the wing and circle are the same shade of gray.) new optical
|
Added 3/21/10.
Another cool rotating illusion. Watch the ferris wheel. It appears to be rotating in one direction.
But if you simply stare at it, it will suddenly start to rotate in the "opposite" direction. Look at it for
a while again, and it will switch back to rotating in its original direction.
Believe it or not, this ferris wheel is
ALWAYS rotating in just one direction. It just appears to switch directions.
|