About BookThe book is intended to emphasize the aspects of electromagnetism which are most important for the modern student as a background both for experimental physics and for the quantum theory of matter and radiation. The emphasis is on physical theory as developed from fundamental empirical laws rather than on mathematics and internal logic. Thus, Maxwell's equations are obtained from the experimental laws of Coulomb, Ampere and Faraday, instead of postulated initially. The physical concepts come out more clearly in this way, and the approach represents the manner in which physical theory evolves. The introduction of electrodynamic potentials and the solution of the wave equation are treated conventionally. Rationalized MKS units are used, because the majority of modern reference books and papers are now written in this system of units. I have not concentrated primarily on problem solving, the heart of the matter lies in the ideas and their development. Beautiful methods of calculus are used for the simplification of the subject matter. References for further reading are given at the end.About AuthorRam Kripal received his Ph.D. degree in Physics from Allahabad University, India in the area of condensed matter physics. He worked as Professor and Head of Physics Department, University of Allahabad. His research interests are in both theoretical and experimental EPR (Electron Paramagnetic Resonance, also called ESR, Electron Spin Resonance). His research laboratory includes Varian X-band(9.5 GHz) CW(continuous wave) EPR spectrometer operational in the 77-1000K temperature range and Unicam 5636 UV/Visible spectrophotometer operating in the wavelength range 195-1100 nm. He collaborates actively with researchers at NPL (National Physical Laboratory), New Delhi, India and with Prof. C. Rudowicz, Institute of Physics, Szczecin University of Technology, Poland. In addition to polycrystalline and single crystal CW EPR he does optical absorption in the wavelength range mentioned above. He is also engaged in EPR research of nano-materials. 22 Ph.D. students have received their degrees under his supervision. He has acted as an external examiner to several Ph.D. and M. Phil. theses examinations outside Allahabad University. He serves as a referee to important journals in physical sciences which publish EPR research (J. Phys. Chem. Solids, Solid State Commun., J. Magn. Magn Material, Spectrochim. Acta, J. Mat. Sci., J. Alloys and Comp., Chem. Phys., Chem. Phys. Lett., Phys. Scripta, J. Magn. Reson., Indian J. Phys.). He has published several articles in EPR and has written a book on Practical Physics. His research has been continuously supported by UGC (University Grants Commission), CSIR (Council of Scientific and Industrial Research), DST (Department of Science and Technology) and CST (Council of Science and Technology), India.