OPTICAL ILLUSIONS
Here are some amazing Optical Illusions for you to have a look at .Optical illusions neither trick the eye nor fool the brain, but …… are fascinating! They also teach us about our visual perception, and its limitations. Emphasis here is on beauty, interactive experiments, and attempts at explanation of the visual mechanisms involved. Don’t let it irk you if you don’t see all the phenomena described. For many illusions, there is a percentage of people with perfectly normal vision who just don’t see it, often for reasons currently unknown.
Look at this illusion.It demonstrates strong (and beautiful) rotation of the “wheels”, occurring in relation to eye movements. On steady fixation the effect vanishes.
Is the wheel rotating ??
Ha ha ....Your brain got tricked huh ??
Stare at the black dot in the center and in a few moments the grey area surrounding the dot will disappear.
What is this ??!!!!
A face ?? Maybe it's something else....At first glance, what do you see? Could it be the word "liar"(tilt your head and check it out) or is it something more. I would definitely give this one a second look
Surface color of both A and B parts is identical. Just use a finger to cover the place where both parts meet and you'll see
Take a look at the center of this figure. Looks like a cool pattern, nothing more. But when you look outside of it, it starts to move. This is due, in part, to how we perceive light and dark.
Also known as Pac-Man illusion is another example of afterimage complementary color (green as opposite to lilac). Follow the movement of the rotating pink dot with your eyes and the dots will remain only one color, pink. But if you stare at the black + in the center, the
moving dot will turn green.
Grid Illusions: Hermann Grid
Dark patches appear in the “street crossings”, except the ones which you are directly looking at.
Also known as Adelson's checker shadow illusion depicts something hard to believe. Square marked B looks considerably lighter than square A, due to the "shadow" being cast upon it. However, color on both squares is precisely the same shade of grey. If you don't believe, use any eyedropper tool or print/cut the squares to verify that both square A and square B are precisely the same.
Focus on the black dot in the bottom right hand corner and the moving grey stripe will eventually turn blue
Stare at the dot in the center of the circle and then move your head closer to it. Neat!