Impossible
Escher's triangle, the devil's fork, impossible stairs... Optical illusions were studied very intensively in the middle of the last century. Nowadays they are a little forgotten. But in vain, if only because thanks to them, various misunderstandings and troubles are possible in various areas of human activity.
Impossible triangle made of bones
Unusual photo frame
Impossible design
Impossible Arch
Construction of the impossible cube
I'm going down, I'm going up
Photograph of an impossible figure
Perpetual motion machine
Palace of Illusions
Escher, sphere
Color perception
It has been known for about a hundred years that when an image consisting of light and dark areas appears on the retina of the eye, light from the brightly lit areas seems to flow into the dark areas. This phenomenon is called irradiation.
Colored ring
They say that if you look at a ring for a while, it will turn from gray to turquoise. True, I still have gray left...
Eye Followers
Surprisingly, yellow dots appear only in the place where you look. How do they know???
Santa Claus
We look at the picture for about 30 seconds, then look at the wall or a piece of paper. Have you seen Santa Claus in color?
White squares
Here you can observe two illusions at once. The illusion of stripes moving relative to each other and deception of shade (gray-white squares have the same color and shade, but look different).
Yellow and even yellower
Look at the animated picture. Squares appear once per second (if animation is disabled in the browser, turn it on). Each new square looks more yellow than the previous one. In fact, the color of the squares is identical. They are exactly the same. But the transition of the gradient from yellow to red creates this effect.
Purple dots
See the purple dots in the center of the flowers? If you look at only one of these points for some time, then all the others gradually disappear.
Circles of flickers
Count the white and black dots on the circles.
Dual green
The green background is the same everywhere, although it seems that the color is more saturated in the central square
Disappearance
Look for about 1-2 minutes at the point in the center. You should see the colored spots on the square begin to disappear. As a result, you will see a clean square and a dot in the center. The phenomenon is explained by retinal fatigue.
Red circle
This chromatic illusion probably does not need to be explained. Here you can already see what is happening... (A. Kitaoka).
Visual distortions
Illusions often lead to completely incorrect quantitative estimates of real geometric quantities. It turns out that you can be wrong by 25 percent or even more if you don’t check your eye estimates with a scale ruler.
Cube
Cube
Non-rectangular rectangle
And yet it’s rectangular, don’t you believe it?
Domino
Mutually parallel lines appear distorted
Parallel lines
Parallel lines appear distorted and move.
Different identical wheels
The wheel rims are the same size, although they look different.
Frog eggs
The circles (tadpole eggs) are located on parallel lines, although they look distorted
Space distortion
Jars of honey
Parallel shelves appear distorted
Square
The picture shows an absolutely even and regular square, which looks curved due to the color contrast and patterns filling it.
Pattern recognition
If you don’t know what is shown in these drawings, then it is almost impossible to see the drawing. However, if you know what is drawn, then it is very easy to see the drawing.
8 fairies
The picture shows 8 fairies. Find them.
7 fawns
There are 7 fawns hidden in the picture. Find them!
7 sharks
There are 7 sharks hidden in the picture. Find them!
7 wolves
There are 7 wolves hidden in the picture. Find them!
7 iguanas
There are 7 iguanas hidden in the picture. Find them.
7 moose
There are 7 moose hidden in the picture. Find them.
7 fish
There are 7 fish hidden in the picture. Find them.
7 eagles
There are 7 eagles hidden in the picture. Find them.
4 tigers
There are 4 tigers hidden in the picture. Find them.
Whose face?
Dual images
Hare or duck? Wife or mother-in-law? Sad old man or cowboy? One or two faces? Donkey or seal? Old man or lovers? Everyone sees their own image!
Premonition
Cover for the film.
Dual Cubes
A variation of the famous Perelman illusion. Drawing on the street.
Angel
Columbus
Virgograndmother
Portrait of a girl
Skull Girl
"Male" landscape
Count your heads
Boy or girl?
The map changes depending on the distance to it
Movement Illusions
Look at still images and they will move! Look at the same moving balls and you will see that they are different sizes! Viewing is not recommended for visitors suffering from epilepsy.
Gyre
Wavy mesh
Another illusion of a wavy surface. Also, there is the illusion of non-parallelism of parallel segments
Colored worms
Another illusion of Kitaoka - colored worms
Pulsating Star
Shift your gaze a little from one point to another and you will notice the pulsation of the star
Snake gears
Many are familiar gears in the new variation of Kitaoka
Sakura petals
Squares
There are two illusions here: parallel vertical lines do not look parallel and the effect of movement is created.
Star squares
There are two illusions here: parallel vertical and horizontal lines do not look parallel and the effect of movement is created.
Unraveling carpet
Chaos of buttons
Note to the web designer: for a fun website, make similar buttons and place them on your website. You will definitely attract attention.
Ferris wheel
Splitting
Author: Herman J. Verwaal of Exloo (Holland)
sailboat
It seems like a sailboat is sailing, doesn’t it?
Crazy Grid
Coming...
Disk
Snakes
They say that high contrast images create a movement effect, but I didn't see it. Perhaps you will see...
Crazy-Grid
Kitaoka did such a good job that no comment is needed here. It is only worth noting that physically the picture without animation, i.e. static, and movement is created in your head.
Pulsating Flower
Animation. If you look at the center for a while, the pulsations will enhance the effect of expanding the petals.
Crazy gears
Animation file. It probably seems to you that circles are spinning? In fact, all animation comes down to changing the background. The gears remain stationary. The first frame is colored gears, the second frame is a black background and gray circles instead of gears. It's easy to check by sorting the gif into frames. Yes, by the way, this image can influence consciousness. If you feel dizzy, close your browser
UFO
Look at the clouds for a few seconds and you will see that they begin to move. After 5 seconds, the picture will be reflected horizontally and it will seem to you that the clouds were moving even faster. By the way, some see them moving faster, and some see changes in direction.
Ring
Animation. In fact, no movement occurs. The first frame shows a ring separated by black stripes, the second frame shows the same ring, only without the black dividers. By quickly changing the first frame with the second, the illusion of the ring rotating clockwise is created.
Suction
Here is an animated picture consisting of only two frames. The first frame shows yellow lines converging towards the center. On the second - everything is the same, only without the black separators. The rapid change of frames creates a strong illusion of lines falling towards the center.
Blooming flower
Look in the center, then move your gaze slightly to the side. You will see the flower bloom. The illusion is based on a feature of peripheral vision.
Blue balls
Attention! This illusion is animated. It is not recommended to watch for a long time!
The flickering creates the effect of blue balls collapsing.
Polar Lights
Vivid movement
