For us to remain in the same specter of illusion, paradox or impossibility, I decided, today, to show you an isometric illusion. This visual optical illusion was created by the Swedish artist Oscar Reutersvärd around 1934. His first work was exactly the one we’re showing you today, even so this may not be the real replica, but the general idea is the same.
What to see?
The illusion represents a two-dimensional drawing that leaves the impression of a three-dimensional reality. In this image you can see a triangle made out of colored cubes. All the cubs have the same color and they are arranged in the same position towards the viewer. Even if it does not seem something special at first you will soon observe that the way the lines are combined is unnatural due the angles they meet.
How it works?
The mechanism is quite easy to understand. Every one of us can make this illusion just by drawing something more than just a square. Each drawing represents a cube seen in 3D, a form of projection to be more accurate.
This illusion takes place due the fact that all the dimensions are equal: height, depth, width. When all three dimensions meet, they all form equal angles which are not perceived as they are by the human eye. In general non-isometric drawings seem more natural because they don’t cause so much distortion or confusion to the viewer.