This page has been robot translated, sorry for typos if any. Original content here.

This optical illusion from floor tiles can easily rock you

Tile optical illusion

Optical illusion (visual illusion) - an error in visual perception caused by inaccuracy or inadequacy of processes of unconscious correction of the visual image (moon illusion, incorrect estimation of the length of segments, the magnitude of the angles or color of the depicted object, illusion of movement, “illusion of the absence of an object” - banner blindness, etc. .), as well as physical reasons (“flattened moon”, “broken spoon” in a glass of water). The causes of optical illusions are investigated both when considering the physiology of vision, and in the framework of studying the psychology of visual perception.

In artistic images, intentional distortion of perspective causes special effects, best known from the works of Maurice Escher (see, for example, his lithographs: Up and Down (1947), Convex and Concave (1955), Belvedere (1958) etc. The creation of optical illusions was often the subject of the works of Salvador Dali (see, for example, his paintings “Slave Market with the Appearance of Voltaire's Invisible Bust” (1938), “Swans Reflected in Elephants” (1937), etc. ). Some optical illusions have been studied within the framework of gestalt psychology (eg en: Akiyoshi Kitaoka).

One of the things that give confidence in life is the feeling of solid earth underfoot. But for some reason, the company responsible for this gender wants to rid you of this feeling, causing the brain to not believe what the legs feel.

The entrance to the Casa Ceramica tile salon in Manchester, England, looks like a funnel or gravity well!

But, in truth, this floor is actually flat and you just see the optical illusion created by the tiles.

And this is easy to see if you still get to the other end of the corridor and look back!

Tile optical illusion

Illusions often lead to completely incorrect quantitative estimates of real geometric quantities. It turns out that you can make a mistake of 25% or more, if you do not check the eye ratings with a ruler.

The glomerular estimates of geometric real values ​​very much depend on the nature of the background image. This applies to lengths (Ponzo illusion), areas, radii of curvature. It can also be shown that what has been said is true with respect to angles, shapes, and so on.

You can even watch a short video about how the tiler laid this floor. Of course, this will finally destroy the illusion in your head, but still interesting.

Duncan Cook, director of Casa Ceramica, shared a video on Twitter to show how they created this effect. The tiles were laid with a curved pattern, which can be seen from an alternative angle.

Via & & wiki