An optical illusion I created years ago for the Gewerbemuseum of Winterthur, Switzerland. The orange halo around the contour of the eye doesn’t exist, it’s a construct of your brain.
This illusive effect is related to the “neon color spreading” phenomenon.
Look carefully at the saw-tooth wave patterns on this picture. Is the background of the picture uniformly gray or are there different shades of gray?
Brightness constancy makes some vertical strips look darker, when in fact the gray background is all the same shade of gray.
This op art work is available as prints and canvases from my official online Gallery.
Geometric shapes are not limited only to the figurative aspect, they can also play active roles, for instance, serving in microelectronics to build operational printed circuits such as: small inductors (magnified, fig. a below), resistors (fig. b) and capacitors (fig. c). (image taken from my book “Almanach du Mathématicien en Herbe“)
This is one of my earliest color optical illusions. There is no yellow or green in the diamond shapes, just vertical black lines! (If you don’t believe it, use a eyedropper tool to check it.) This intriguing visual effect is mainly due to “simultaneous color contrast induction“.
“Deep Blue”, the yellowish rays you see in this picture are a construct of your brain. My op art work is available as prints from Saatchi Art gallery.
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.
Look at the colored rings from a distance. Then decide which ones have YELLOW inner circles, and which ones have BLUE inner circles.
My optical art has been featured in the February issue of the German science magazine PM.
For over 10 years, I’ve had the pleasure of collaborating with Focus, an Italian monthly popular science magazine published in Milan.
In October 2020, Focus released issue #336, which featured my article and optical illusions. This special edition included a 10-page dossier on visual perception, showcasing over 13 original illusions I created, complete with explanations.
The cover of this issue also featured a unique effect I designed for Focus. As you read the main title, the cover image moves, and, intriguingly, the title changes depending on your perspective—read closely, and it says ILLUSIONI; look from a distance, and it transforms into COSA VEDI?
Look at the picture from a certain distance and check which colors are in the patchwork. Image taken from my book “Fantastic Optical Illusions” available from Amazon US: https://www.amazon.com/dp/178739235X/?tag=archimelabpuz-20 and Amazon UK: https://www.amazon.co.uk/dp/178739235X/?tag=archimedeslab-21
