Aeolipile Experiment (from Utriusque Cosmi)

The image shows a two-tiered architectural structure used for a scientific demonstration. The upper tier is a cylindrical furnace with a fire burning on top, labeled with letters A and B. Below this, a secondary, wider cylindrical base (labeled C and D) houses a central bulb-shaped vessel (labeled E) that emits a jet of steam or vapor into the lower chamber. The style is a clean, technical cross-hatched engraving typical of 17th-century scientific illustrations.

This illustration comes from Robert Fludd’s 'Utriusque Cosmi Maioris scilicet et Minoris metaphysica, physica, atque technica historia' (1617), representing early modern natural philosophy and the study of pneumatics and heat-based motion.