This is not just any optical illusion, it is very well thought out and calculated; Suffice it to say that he has won the second prize for the best illusion of the year 2016.
Let’s say that this is not a competition for amateurs, it is an authentic demonstration of mathematics and science by the participants.It is not by chance that in the first positions we find people who work in some of the most prestigious universities in the world.
The creator of this optical illusion is Kokichi Sugihara, professor of engineering at Japan’s Meiji University, and he implements concepts that are not really that complex. But before explaining how it works, let’s look again at the illusion.
The illusion that will make you doubt your eyes
As you can see, the effect that Sugihara has achieved makes the shapes that we put in front of the mirror change completely: if we put a row of squares, they become cylinders, and if we turn them upside down the effect is the opposite, it seems that what we have in the hand are cylinders and that there are squares in the mirror.
Even if we add another shape, four squares, the result is different and now they look like overlapping circles forming a pattern. It is relatively easy to do this trick with a single figure and a single mirror, but it is that in this trick, for each new figure that we place in front of the mirror, the result seems to be completely different. How does it do it?
How this optical illusion works
The YouTube channel Make Anything has been in charge of doing a bit of reverse engineering to discover the secret of this optical illusion, and it has achieved it thanks to 3D printing.
As you might have imagined, the key is in the form of the cylinders, which are neither perfect circles nor squaresIt is what is achieved when a circle is converted into a square, that midpoint between the two shapes.
Two of the sides of this figure go up, while the other sides go down; in this way, depending on the angle in which we see the figures, they will look like a square or a circle. When we see the figures from our perspective, we see a square, for example, but thanks to the mirror we can see the opposite perspective, showing a circle. The rest of the forms follow a similar logic.