This book is a collection of key papers on B(3) theory and radiation-induced resonance spectroscopy. It gives the first systematic account of B(3) theory as a non-Abelian gauge theory with O(3) invariance group, and provides the background theory for the development of NMR and ESR as a visible frequency spectroscopy with vastly enhanced resolution. Audience: This volume will be of interest to researchers and postgraduate students whose work involves electromagnetic theory, optics and optoelectronics, quantum mechanics, and quantum field theory.