[The authors] ...have stressed the phenomena underlying the axioms chosen and the operational interpretation of the quantities introduced. In this, they have clearly succeeded. -Mathematical Reviews Throughout this book, the rationalized MKS system of units is used, making analysis more intelligible, and there are many diagrams which are of great help in understanding the text. Each part of the book is followed by a copious list of references... Also, in appropriate places there are indications how computer algebra (REDUCE/EXCALC) can be used... The printing and appearance of the book are excellent... It can be warmly recommended. -Zentralblatt Math