A good knowledge of physics, measurement, and equipment is essential for practising anaesthetists. However, these subjects do present considerable problems because few anaesthetists have any background in physics. This book explains the physical principles and applications of physics in anaesthesia, and the statistical methods that anaesthetists are required to understand. The book includes sections on equipment and safety in anaesthesia, and electrical safety. Fully updated for the second edition, the book also includes new chapters on the depth of anaesthesia and on electrical safety.