Optical illusion.

wonder if it has something to do with screen flicker.

I have seen print out, results are same. I have many in my kitty.

see one more below with different effect.

Good one. My eyes now going in circle

Its good to see these after 6PM. Circles rotates much faster

and how many legs has an elephant?

the two front legs have no feet!

The three front legs have no feet - you missed one!

I would say there is only one real leg have foot.

So THAT'S what happened to the Republicans.

keeps the lady elephants happy. . . .doh

Q why do elephants have four feet?

A because they would look silly with six inches

2 with no feet and 4 legs

of course they are moving..

when a snake is alone it will generally remain still, but when you group them together like that they cant help but slither about.

damn if those ain't snakes

Are you sure all the vertical lines are straight ?

(All these and above were in our Visual training - NDT syllabus- optical illusion- How your eyes will fool you)

The whole concept here is too complex, The eyes see something, then the depth of feild comes in picture (as you see in the fisrt picture, focus on a patetrn and that does not move the ones on sides do) instrument error, then the brain tries to link and connect the pattern (so processing errors)

and a high bit is in unexplained errors.

These are important in the NDT-VT - how you miss the obvious - so a picture may tell you hundred words, but all the hundred words may be wrong.

In to from the top - or bottom?

jt.

Is anything as we see it?

Thanks Rakesh. I assume you have read the various explanations for these and other illusions. In college, I pursued an interest in perceptual psychology, and found that our brains create meaning from various stimuli, often by putting together hypotheses to fill in missing information.

The other day, I was looking at a very unusual bird in a tree. It then started to climb the tree, and instantly turned into a squirrel. My first hypothesis was wrong.

Or the LSD was kicking in.

Here's my guess on why that happens.

The colors are light blue and mustard-like orangie-yellow, that seem to have the same relationship as blue and orange, red and green, purple and yellow. Those are the complementary colors, where one is a primary color and the other one is a secondary color, a combination between the other two primary colors. Long story...

So complementary colors act as opposites, especially when there is white or black between them (I learned that in grade school painting class). The neutral limit (black or white) also acts as an enhancer so they seem stronger. As an example, that blue looks stronger or blue-er because there is a black/white line between it and orange/yellow. The contrast is therefore really strong and our eyes can hardly focus on it, which makes the circle move.

Now, I've noticed that the neighboring circles have blue and orange/yellow in opposite directions. Clockwise it goes like this:

circle no.1 : blue, black, orange/yellow, white, blue etc

circle no 2 : orange/yellow, black, blue, white, orange/yellow etc

That change in sequence makes then the circles move in opposite directions.

And of course, the little red tongues make them look like hypnotizing snakes

Hope it cleared a little bit the mystery.

Validating my color explanation, my color-blind husband can't see any movement in the circles

I printed it on black and white printer and they are still moving, are you sure he is color-blind?

Yes, I am sure and he's not color blind in the form of seeing everything in shades of grey. Better put, he's color-inconsistent. Meaning to him sometimes red looks brown and yellow looks green, just to give 2 examples. Weird, I know...

I've edited the photo in Picasa and made it b&w. What I've noticed is that the snake's movement is slower and harder to see. Showed it to my husband again and he still doesn't see any movement.

So my guess is the construction of the image, meaning the circles, is the base and the colors amplify and modulate the movement. Hope it makes sense...

I think that your explanation has some merit. I have a print out of the beautiful blue and mustard moving circles (toward the center the color comes to green). Being a "chipo" I have printed in black and white.

Now, it was another question if the movement has something to do with the screen flicker and that can contribute, too to the movement.

On the B&W print out there is much more less spinning. Is it the color combo? Is it the horizontal and vertical scanning?

By the way, trebuia sa fie cineva din Timisoara care sa sparga gheata pe CR4.

Thank you every one for participating.

I am just thinking of the dice combination triangle, does it have to do anything with 2 shade dices? is it possible to make it on CAD software?

Does every illusion have different explanation?

Regards

Rakesh,

Only on CR4!

thats never-ending climb.

Do you know the Artist M.C Escher he had a lot of optical illusion art

http://en.wikipedia.org/wiki/M.c_escher

Thank you for upgrading,

Hi Rakesh,

It's really an eye treater...

If you have more, let me wish to get it!

Hari

Go here,

http://www.metroflog.asia/2009/03/crooked-square.html

Make sure you just click on list Because there are many other illusion on top and bottom of list,

For crossed eye viewing:

I viewed these cross eyed -- and they are way cool. However, my eyes stuck that way, just as my grandmother said they would. This screwed up my depth perception, and while driving today, I ran over three people. You will be hearing from my lawyers.

Am I party too?

It depends on how much money we can get out of Bricktop. I think you are off the hook though, because of the high cost of international lawsuits.

Whooow. Maybe we can settle out of court. I'm willing to offer those affected a free lifetime subscription to CR4, plus unlimited google searches.

Or a job. We just happen to have an opening for an inflight ICBM repairman. Your choice.

Wow! I like to go fast! Is part of my PPE for the ICBM job a parachute?

I really like the idea of free Google searches though. Could we work a deal where I have a payroll deduction for the searches at perhaps $.50 each?

focus on the dot in the centre and then move your head constantly towards and away from the monitor. You should see the circles rotate spookily!

Optical illusions for men

i don't understand i do not see any waterfall

ROFL!

No matter how long I stared I couldn't see the waterfall either.

Bricktop said there was a car in here som

ewhere.

Back on topic

a nausiating one

then an interesting statue composition

and a variant on the waterfall called Boat?

If I can't stop laughing soon, I'm going to have to go to the doctor to get some sort of laugh control intervention... and I'm sending you the bill.

Whats illusive in 3rd image? I don't see. Just thinking from where to start?

Do you have the feeling that someone is watching you?

talk about optically deluded!

not so smart Car, Must be good for saturday night drive,

That is no illusion that is the parking version

rakesh_semwal thanks for the comments!

my head hurts