Dolphins. What do you see ?

Did you seen the dolphins ?

Amazing sleeveface

 

I like very much this kind of sleeveface

Face fat up , face thin down , only an illusion

 

Maybe you know  that faces are more difficult to recognize when they’re upside-down and that sometimes we misperceived the facial expressions of upside-down faces .

But  Peter Thompson ,  from the University of York (UK) discovered an amazing optical illusion !

We can name it  The Fat Face Thin illusion. Your assignment is to compare the upside-down face on the left of the lower figure with the upright face on the right. Have you noticed how the upside-down version looks much thinner?! Moreover it appears longer shaped than the upright version. Of course, there is no need to mention how both pictures are identical. This illusion illustrates the internal features of the face (eyes, nose, mouth) can distort our perception of face shape.

Illusion circles

Can you see the circles in this illusion?

Optical illusion .Three Nuns

Can you guess which nun is bigger?

Gray spots appearing in the real life. Optical illusion

 

Here’s a nice submission. This one was sent in by John Newman, who has seen this type of illusion hundreds of times around the net, but never in real life!
Remember when doing our duty, most of the time we let our thoughts slip by, and before you know it – illusions start appearing in front of our eyes! The thing is… do you see all those gray spots appearing at the white intersections below? They aren’t really there (just so that you know)…

Strobe effect in water fountain. Stop the time.

This device creates the illusion that a simple stream of water droplets can defy the known laws of physics. By controlling a set of flickering LEDs, the dripping water can appear to slow down, freeze in mid-air, and even reverse in direction.

This illusion exists because the brain attempts to fill in the gaps between flashes with its anticipated motion. It is the same reason that your brain interprets the 24 frames/second of a movie to be in-motion, rather than recognizing the individual still frames .

It all started when my friend Jesse told me that if you get a strobe light fast enough, you can make it look like dripping water is going in slow motion or even backwards. This phenomenon happens because strobe lights can ‘capture’ an instant in time and allow your eyes to see it as lasting longer than an instant.

So if the strobe light captures consecutive instants of time just out of sync with a periodic occurrence such as dripping water from a faucet, it can appear that the drops are moving slowly or even backwards.

Of course, since we had no strobe light of sufficient speed, Jesse and I never really pursued the concept.

Source: Creations

Blocks moving or not ?

Those blocks in this image appears to be moving, however its not really moving its just an optical illusion. Take a look at some other moving optical illusion

Optical illusion . Squares or circles?

In this optical illusion , you see circles or squares?

Fraser optical illusion

When slightly tilted line segments are aligned horizontally like the figure above , the whole array appears to tilt toward the tilt of the line elements.

This is a reversal efect of the Zollner illusion or acute-angle contraction.