Having at its disposal an excellent, practically unparalleled in nature optical device, our brain can still be quite easily deceived. Correcting the perception of the visual image, he is able to give out what is desired for reality, to “draw up” non-existent details and to cut off unnecessary, in his opinion, image elements.
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Optical illusions can be divided into many categories and in each of them there are examples that are really amazing in the imagination and make you think about how far our perception of reality is from reality.
In the late XIX – early XX centuries, the so-called impossible figures gained popularity, and the Swedes Oscar Ruthersward became the father of a whole trend in the art of creating bastard illusions. A feature of his paintings is the image on the plane of three-dimensional objects that cannot be reproduced in our 3D world. In particular, the famous Penrose Triangle and a number of other “impossible figures” belong to his pen.
In the digital era, several genres of optical illusions have also appeared, one of which is static images, which, thanks to the special play of color and the inability of our brain to process all the details at the same time, seem animated.
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12 black dots
For example, in this image, published on social networks by psychology professor Kitaoka from Japan, 12 black dots do not want to be in their place, disappearing and appearing as the viewer’s pupils move.
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See 16 circles in the image below? And they are:
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Illusions of movement
Kai Nao’s painting is also impressive – the star drawn on it seems to rotate around its axis.
It’s hard to believe that all these drawings are actually motionless.
Does the figure move or not? The Mickey Mouse figurine seems to be moving, but in fact this effect is created due to changing shadows and background
This GIF, Mickey is not moving at all. The human brain is so simple that it is fooled by arrows pic.twitter.com/rp1v0HLqI5
– じ ゃ が り き ん (@jagarikin) June 17, 2019
The same thing here – the gears do not actually move.
～ 逆 に 実 際 動 か し て み ま し た ～ pic.twitter.com/EShlcOoMfg
– じ ゃ が り き ん (@jagarikin) June 19, 2019
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Changeling and drawing
Another very popular form of optical illusions is “shifters” and “drawing in a drawing”. On such images you can find one or more objects hidden by the author.
Popular at the dawn of the Internet “Princess and the Witch”,
Horse and Toad:
“Snow White and Sherlock”:
“Old Men and Mexicans”:
Some of these optical illusions are fascinating mysteries. For example, in this picture it’s easy to find a couple of lovers, but it’s much harder to find dolphins.
And here, whom do you see a girl or an old woman?
The author hid the goose, although most viewers find the dog in the clouds and Pushkin’s profile:
And in this figure, it is quite easy to detect not only the Indian, but also the Eskimo:
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Turn stars into monsters
A few years ago, the University of Queensland, involved in the study of visual distortion, created a video with optical illusion that conquered the Network. In it, the viewer sees photographs of celebrities to the right and left of the cross in the center that he is looking at, while peripheral vision distorts portraits and turns stars into monsters.
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Surprisingly transforming geometric shapes in mirror image
In 2005, enthusiasts instituted the Best Illusion of the Iear Contest Award, won last year by Japanese mathematician Kokichi Sugihara, who demonstrated the truly amazing effect of transforming geometric shapes in mirror image.
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The perception of geometry in general is a big problem for our brain. A vivid example is the Ames Room, in which one person seems to be a giant, and the second a midget. The effect is usually achieved using distorted squares on the floor and walls, allowing the viewer to hide the fact that the room has a trapezoidal, rather than a square shape.
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The illusion of intersecting circles
Another geometric illusion makes us think that circles consisting of small squares intersect each other.
This is actually not the case.
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Our brains are hard at defining color, it’s pretty easy to fool with the help of a background. In the image below, the red squares on the left appear darker than those on the right, but this is not so.
All the balls in the images below are actually the same color.
And here is a visual demonstration of the dependence of the perceived color on the background image:
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Illusions in the photo
What color is the dress? This is unbelievable, but some people claim that the photo below shows a dress in black and blue, others think that it is white and gold.
Is this cat climbing the stairs? Or is it still coming down? We ourselves can change the direction of its movement by the power of thought. Schrödinger would have appreciated.
Normal at first glance, the photo.
But if you turn it into its usual position, then our brain will stop correcting errors in perception and will show everything as it is.
These bars lie on each other from one end and next to the other, but our view fails to find a middle ground.
A quick glance at these two shots allows us to say that the angle of inclination of the Leaning Tower of Pisa is larger on the right than on the left, but it is not. This is another interesting effect that forces us to perceive two images as a whole with broken symmetry.
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Stunning audio illusion “Yanni or Lorl”
Listen to the audio clip on the video below and be sure to share the article with your friends (you can listen together at the same time), the result will surprise you – some people hear Yanni, others Lorl. What do you hear?
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Popular illusions on video
A very interesting three-dimensional illusion is Gardner’s tracking dragon, which can be done with your own hands using a printer, paper, scissors and adhesive tape (you can find the corresponding template using Google).
Which direction is the chair turned?
The illusion of the rotation of the gears is achieved through the imposition of lines on each other.
And here is one of the most ambitious presentations of optical illusions from the musical group OK, known for its masterpiece clips.
7 excellent optical illusions in a fresh video from the channel Quirkology.