It has now been nearly six years since the publication of the first edition of Field, Force, Energy and
Momentum in Classical Electrodynamics. In the intervening years, I have continued to teach my
electrodynamics course to the incoming class of graduate students at the University of Arizona’s College
of Optical Sciences. This one-semester course, which is based on the first seven chapters of the present
book, covers the fundamental aspects of the Maxwell-Lorentz theory of electromagnetism, aiming to
prepare the students for advanced studies in the various subfields of Optics and Photonics. Each year, I
have had to come up with new problem sets to assign as homework or to ask during examinations. The
new problems are now added at the end of the relevant chapters. Solutions to problems marked with an
asterisk (*) appear in the back of the book under the heading Solutions to Selected Problems.
Also appearing for the first time in this revised edition are the following three chapters: Chapter 10
on Maxwell’s Equations in Spherical Coordinates, Chapter 13 on the Optical Theorem, and Chapter 15
on Electromagnetism and Special Relativity. A new appendix provides an in-depth coverage of the
International System of Units (SI), which is used throughout the book. In addition, Chapter 6 has been
revised to include an alternative derivation of the Kramers-Kronig relations, while Chapter 9 has been
expanded to include discussions of trapped light in cylindrical cavities, electromagnetic angular
momentum, and Mie scattering from cylindrical objects. Several other chapters have also undergone
revisions and adjustments.
All in all, Chapters 1-9, 11, 12 and 14 are derived, in whole or in part, from Chapters 1-12 published
in the previous edition of the present e-book. Chapters 13 and 14 are based on my previously published
papers in the American Journal of Physics and Optics Communications, respectively. These publications
are cited in the footnotes appearing at the end of each chapter. The material in the rest of the book is
original and has not been published elsewhere. I hereby declare that the entire book is free from conflicts
It is my sincere hope that the old material as well as the new features appearing in this revised
edition will provide the reader with a broad perspective on the many fascinating aspects of the classical
theory of electrodynamics.
For their thoughtful comments and questions, as well as suggestions that have
resulted in significant improvements over the first edition, I am grateful to numerous students who have
taken my electrodynamics course during the past six years.
Conflict of Interest:
The author declares no conflict of interest, financial or otherwise.
Tucson, June 2017
List of Contributors
College of Optical Sciences
The University of Arizona