This beautifully illustrated volume provides an in-depth look at horology: the scientific study of time and timekeeping. Horology is a thorough introduction to the world of time and watchmaking. Brimming with more than 150 detailed and full-color images, illustrations, charts, and technical drawings, this book is a must-have for anyone interested in the art of watchmaking and watch design. It includes the requisite exploration and presentation of the rarest, most coveted, and classic watch designs and styles, including Jaeger-LeCoultre, Patek Philippe, Rolex, Cartier, Breitling and many others. Topics include early calendars modern timekeeping the smallest unit of time the twin paradox the golden ratio evolving design, using the Vacheron Constantin 222 as a case study decorative watchmaking techniques, including brushing, chamfering, circular graining, chiseling, and more A multifaceted study, Horology discusses the philosophy and measurement of time, the possibility of time travel, an