Geometric Study of Cylindrical and Spherical Perspective

On the left, a vertical cylinder is rendered with tight, horizontal lines suggesting a metallic or solid texture. On the right, a sphere displays a more complex system of curved hatching that radiates toward a central circular highlight, creating the illusion of a reflective or curved surface. The background consists of aged, textured paper, and the figures are presented as technical exercises in linear shading and optical depth.

This print originates from Robert Fludd's 'Utriusque Cosmi Maioris scilicet et Minoris metaphysica, physica atque technica Historia' (1617-1621), illustrating the author's interest in the mathematical underpinnings of natural philosophy and the harmonization of geometry with the physical world.