Anatomy of Light

The Long Now - Saatchi Gallery at 40

November 2025 - April 2026

Drawing on ancient solar mythologies that revered the sun as a divine source of life, Petroc Sesti channels two decades of optical experimentation into a sculptural exploration of geometry, light and colour. His works translate the invisible dynamics of light waves into vivid chromatic form, sustaining humanity’s enduring fascination with celestial energy.

Expanding the scale and ambition of optical sculpture, Sesti realizes the largest and most ambitious prism to date. Rooted in Newton’s inquiry into the secret architecture of the rainbow, yet wholly contemporary, these works bridge ancient cosmology and modern scientific insight.

Standing as refractive beacons, the tetrahedral prisms capture and disperse sunlight into shifting spectral fields that move with the viewer, transforming perception into an active encounter with the immediacy of light.

HELIOPHORE I, - The Long Now, Saatchi Gallery

HELIOPHORE I

Tetrahedral Prism

Anatomy of Light - Four Seasons, Doha

February 2026

The Anatomy of Light exhibition unfolded at Four Seasons Doha as an evening where optical geometry, light, and perception converged.

As the viewer shifts around the prism, its geometry unravels into a state of optical abstraction, revealing patterns that exist only in motion. At the same time, the work responds to the changing path of the sun, its surfaces catching and transforming sunlight into an ever shifting field of kaleidoscopic refraction. The sculpture becomes a living threshold between light, colour and perception, renewed with every step and every hour of the day.

Returning to Doha after installing Vanishing Point at Qatar Foundation, I am pleased to continue this dialogue between light, form and time.