The Way Things Work by David Macaulay. New and unused, but jacket is slightly damaged in back (as shown). Famously packed with information on the inner workings of everything from windmills to Wi-Fi, this extraordinary and humorous book both guides readers through the fundamental principles of machines and shows how the developments of the past are building blocks of the world of tomorrow. This sweepingly revised edition embraces recent technological developments, from touchscreens to 3D printers. Each scientific principle is brilliantly explained, with the help of a charming, if rather slow-witted, woolly mammoth. An illustrated survey of significant inventions closes the book, along with a glossary of technical terms and an index.