The Importance of Dots

It is often the little things that are the basis of progress… So let me tell you a little story about the tiniest thing on earth: the dot.

Thousands of years ago, a man in his solitude scanned the night sky and saw all those dots shining like so many still fireflies, and, perhaps for fun, he decided to join them together to form shapes. This is how zodiac signs and astronomy were born.

Far away, in ancient India, the dot symbolized beauty and the eye of knowledge. But even more, the dot they called “shunya-bindu” (शून्यबिन्दु) represented what we nowadays know as zero. It was first a placeholder and then a fully fledged number, for when it is added to the right of the representation of any given digit, the value of the digit is multiplied by ten. This is how our current numbers and decimal numeration system were born.

While drawing or painting, visual artists of all times used to fix a dot – or more specifically a point in space – which was traditionally visualized from the tip of their thumb. Eventually, when this point receded so far away in space, it became known as a “vanishing point”. A vanishing point is where all converging lines of a landscape meet at the horizon. This is how perspective and geometry were born.

One day, medieval musicians were tired of having to rely solely on their memories to remember songs. So they started to use dots, named “puncti”, placed on or between four lines to represent the pitch and duration of a sound. This is how musical notation and programming were born.

In the modern era, at the beginning of the nineteenth century, dots were used in many other symbolic forms: bumps, holes, single tones, flashes of light… Do the terms Braille, Morse, punched card, or pixel sound familiar to you? This is how communication and coding were born.

This is how the humble dot, often overlooked, has served as a fundamental building block for countless advancements throughout history. Never underestimate the power of small things; within a dot was the whole universe.

Bridget Riley, White Discs 2, 1964, emulsion on board, 41 × 39 inches (104 × 99 cm) © Bridget Riley 2021. All rights reserved.

(The text above has been used as foreword for the book “The All-Round Activity Book” available from Amazon)

Perceptual Nexus: A new philosophy of perception

Presenting a sneak peek of my upcoming philosophical book on perception.

In this exploration, I dissect the dynamic interplay between our “self,” the elusive “perception sphere,” and the external world. Operating independently, the perception sphere lacks self-awareness, creating a symbiotic relationship with the self, which, in turn, relies on the sphere for perceiving both itself and the external world.

Eager to discuss further with potential publishers.

The Master of Numbers

Presenting “The Master of Numbers,” my acclaimed artwork. This photomosaic portrait, assembled from 288 random number-themed photos, creates a captivating optical illusion, revealing the image of a great physicist from a distance.

Currently showcased in numerous Museum of Illusions globally, posters and prints of this optical art can be found on my online store.

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Globes within Spirals? (Optical Art Tutorial)

© Gianni A. Sarcone – redbubble.com

Are you seeing spirals? Look again, they’re actually concentric circles! This unique variation of the “Fraser spiral” plays tricks on your eyes by blending a regular line pattern (representing the circle’s circumference) with misaligned elements (the spheres with varying brightness).

Would you like to learn how to create this mesmerizing illusion? Follow my simple visual tutorial. If you have any ideas to further enhance this project, please don’t hesitate to reach out.

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“Infinity”, A Kaleidoscope of Squares

With this work, I aim to push geometry to its limits, transcending the confines of color. My goal is to showcase the creative potential of simple concentric squares as a medium for experimentation and the discovery of new op art patterns. By delving into this exploration, I strive to unveil captivating illusions of color and mesmerizing motion.


Draw a large and a small square with thick lines and center them (Fig. A). Next, blend the inner and outer squares in six steps to create a set of concentric squares. Reproduce the set to form a larger square pattern, as shown in Fig. B.

“Enigma”, Paradoxical Volumes

In these minimalist op art works, I explore geometry as metaphor, using the hexagon as a building block for cubes and other regular solids. The forms appear stable and believable, yet they are impossible. Their contradiction isn’t obvious at first; it reveals itself only when the eye slows down and follows the structure closely. By merging incompatible viewpoints and softening the boundary between inside and outside, the drawings turn logic against itself. The more ordinary the form looks, the stronger the effect—these objects are meant less to trick the eye than to unsettle the mind and challenge our sense of space.

Enigma 1: Available as fine prints and t-shirts.

The two drawings displayed above and below combine paired tribars to form an impossible isometric cube, where form and illusion lock into a single structure.

Enigma 3: Available as fine prints and t-shirts.

Here, the “volume” turns itself inside out, quietly echoing the logic of a Klein bottle and unsettling the usual distinction between interior and exterior.

Enigma 2: Available as fine prints and t-shirts.

I am currently in the process of writing an informative book titled “Mastering Optical & Geometric Art: A Journey to Captivating Creations.” With a length of 136 pages, this book serves as an engaging guide to creating visually striking optical art and intricate 2D and 3D patterns. If you are interested in exploring further, I invite you to connect with me on Amazon.

The Enigmatic Color of the Sun

Is yellow the true color of the sun? Our sun emits a broad spectrum of radiation, including visible light, which is crucial for life on Earth. In the vacuum of space, the sun appears white because it emits light across all wavelengths fairly evenly. However, when this light enters our atmosphere, it encounters air molecules and particles that scatter shorter wavelengths—primarily blue light—more effectively than longer wavelengths like red and yellow.

color of the sun

Simultaneous Color Contrast Explained…

Consider a small, clear disc placed against a blue background. The disc may appear slightly yellow due to the influence of the blue light surrounding it. This visual effect is similar to how we perceive the sun against the blue sky.In essence, while the sun itself emits white light, our atmosphere alters its appearance, leading us to see it as yellowish or orangish at times.

Additionally, not all species perceive colors in the same way. Different animals have varying sensitivities to wavelengths of light. This means their experience of color and light can be quite different from ours.

For more fun facts about color perception and optical illusions, visit Archimedes Lab.

Sometimes Behave So Strangely…

Psychologist Diana Deutsch noticed something strange in 1995 while fine-tuning spoken commentary on a CD. The phrase “sometimes behave so strangely” sounded like a song when repeated on a loop. The phenomenon isn’t fully understood.

Deutsch’s illusion “Sometimes Behave So Strangely” experienced by the fifth graders of Atwater School, Shorewood, Wisconsin. Video created by their music teacher Walt Boyer.

Learn more: http://deutsch.ucsd.edu/psychology/pages.php?i=212