An Earth-like Moon, a Moon-like Earth, 1745.
© Science Museum / Science & Society Picture Library
Engraving showing: the Mediterranean, and Asia Minor including Palestine, Arabia, Persia and Egypt (left); partial Moon (top centre); full Moon (bottom centre); a view of Earth with the Indian Ocean, Africa and Asia. Illustration from 'Mathematischer Atlas' (Mathematical atlas) by Tobias Mayer (1723-1762) published in Augsburg in 1745. Each plate has descriptive text on either side; some have contemporary hand colouring. Mayer was heavily influenced by Christian von Wolff's work, through which he had taught himself mathematics. The plates duplicate Wolff's choice of subjects - arithmetic, geometry, trigonometry, astronomy, geography, chronology, gnomonics, fortification, artillery, civil architecture, optics and mechanics.