Optical Prism Caustics

A clear triangular glass prism rests on a dark, reflective surface, splitting a focused white beam into a fan of rainbow caustics. The light enters from the right, creating a bright, star-like flare where it meets the glass, while sharp white lines trace the prism's edges. Small, scattered specks are visible inside the glass, and a faint reflection of the light pattern appears on the surface below.

The composition is stark and precise, set against a deep black background that isolates the subject. The wide frame leaves significant negative space in the upper right and lower left, balancing the strong diagonal of the light beam. The high-contrast palette of black, white, and vibrant spectral colours creates a minimalist mood, with smooth gradients and sharp details emphasising the physics of refraction.

This 16:9 aspect ratio suits desktops and laptops, particularly those with dark themes or OLED displays, where the deep blacks and bright highlights can be fully appreciated.