Book excerpt: This new edition of the Newnes Engineering and Physical Science Pocket Book, contains much new and updated material, including data on auto, isolating, three-phase, current and voltage transformers, d.c. machines and induction motors, complex wave forms and field theory, ensuring that this volume has all the information the student, engineer, scientist or technician may need, at their fingertips. Formulae, definitions and general information are presented logically and clearly, allowing the user to access specific data quickly and easily without having to wade through extraneous material. This handy reference book is relevant to a wide range of students and technicians at all levels. J O Bird is the author of many successful textbooks in the areas of engineering, mathematics and science. P J Chivers is the author of several textbooks on chemistry.