A good knowledge of physics, measurement and equipment is essential for practising anaesthetists. The subject does, however, present considerable problems for many, few of whom have any background in physics. This book explains the physical principles and applications of physics in anaesthesia, covering the statistical methods that anaesthetists are required to understand. The book includes sections on equipment and safety in anaesthesia, and electrical safety. The book starts with mathematics, statistics and a basic physics background, not only to enhance the understanding for what follows in the book, but also because these basic sciences are fundamental to many other aspects of medical science. Areas which trainees find particularly troublesome, such as electricity and electrical safety, are discussed in detail.