Discorsi e dimostrazioni matematiche, intorno à due nuoue scienze attenenti alla mecanica & i movimenti locali. Con una appendice del centro di grauità d'alcuni solidi
Galileo Galilei's 1638 Discorsi e dimostrazioni matematiche, printed by the Elzevirs in Leiden, is a mathematical treatise on the new sciences of mechanics and motion, written in Italian for a learned readership. Its pictures are plain geometric diagrams of circles, tangent lines, triangles and labelled points, drawn in simple black line, which a designer might take as clean schematic line work for technical layouts.
