Scintillating Starburst: Seeing rays that aren’t there…

This is one of my oldest illusions I created in the 90s. In the picture you may see ghostlike dark radial beams. This illusion is a variant of the Herman’s scintillating grid illusion. I designed this illusion just by turning 45 degrees the Herman grid and then by applying a polar transformation.

From my book “Eye Tricks“, 2001-2007.
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Is Magenta a Real Color?

Most of us are familiar with magenta — it’s a kind of purplish-red that exists between blue and red on color wheels (color wheels don’t accurately represent the physics of photons, but they represent the philosophical reality: color is a human construct that helps us interpret wavelengths to better understand our world).

The odd thing about color vision is that magenta (or pink) color is not in the spectrum of colors, meaning it cannot be generated by a single wavelength of light. Our brains interpret the color sensation of magenta/pink as ‘absence’ of green.

Source: https://www.archimedes-lab.org/Gallery/new_optical_illusions/pages/10n-Pink_rose.html

magenta

A simple real life illusion: the transparent knife!

Have a look at the picture, it looks like a “transparent” or “camouflaged” knife! I took this photo during a magician party many years ago. This illusion is based on specular reflections, it is simple but effective… In fact, when you place the blade of a knife in the middle of the tines of a fork, it will reflect other objects that are nearby.

Image taken from my book “Optical Illusions: An Eye-Popping Extravaganza of Visual Tricks“, available from Amazon.
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My dossier on visual illusions

Focus is an Italian monthly popular science magazine published in Milan, Italy, with which I have collaborated for more than 10 years.

Focus Magazine issue #336 featuring my article and my optical illusions has been released on October 2020. It contains my special 10-page dossier on visual perception with over 13 original visual illusions of my creation and their related explanation.

The cover also features a special effect I designed for Focus: as you read the main title, the cover image moves and, curiously enough, the title changes if you look at it closely (ILLUSIONI) or from a distance (COSA VEDI?).

Focus Mag cover

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