Ingenium is medieval English vernacular for "an ingenious
contrivance." In this fascinating book, physicist Mark Denny
considers five such contrivances—the bow and arrow, the
waterwheel, the counterpoise siege engine (including the
trebuchet), the pendulum clock anchor escapement, and the
centrifugal governor—and demonstrates how they literally changed
the world. Interweaving an entertaining narrative with diagrams,
equations, and... more...