Abstract

The literature of the past century produced an historical reconstruction of statics theory applied to mechanical structures coinciding–starting with Le Mecaniche (1634) and Discorsi e dimostrazioni matematiche sopra a due nuove scienze (1638) by Galileo Galilei (1564–1642). Based on previous research (RP) and our historical and historiographical line of research [37], in this paper we briefly analyse Buonaiuto Lorini (1540–1611) Le Fortificationi ([1596] 1609) as a bridge between the science of weights and early mechanical science, including the graphical scale and machines. This is a fundamental and advanced military fortification–engineering treatise with an evident important relationship between theory & practice, including designs–projects of both fortresses and machines, understood as tools, to manufacture them. Lorini also presents an excursus on how fortifications developed according to the advent of new artillery/weapons, comprising the crucial passage from the use of square to circular towers up to the description of modern fortresses in all their details, e.g., bulwarks and cavaliers, curtains, orillons, star–shaped plans. Basing on Archimedes’ (fl. 287–212 BCE) techniques (law of the lever) and Guidobaldo del Monte's (1545–1607; Le Mecaniche (1577–1581) he successfully engaged in advanced mechanical considerations. His position (at the end of the first chapter) on the distinction between the mathematician (scientist) and the mechanician (architect–engineer or even machine expert) is historiographically very interesting within the difference between abstract Euclidean geometry and the application of its contents to imperfect and heterogeneous reality. The translations are ours.