Electromagnetic Free Modes of Layered Resistive Media Edward W. Leaver 10 January 2010 Contents List of Tables List of Figures 1 Introduction 2 Signal Basics 3 Subsurface Properties and Propagation 3.1 Stones in the Pathway 3.2 Reflection Coefficient 3.3 Illustrating the Point 3.4 Free Modes of Decay 4 Conclusion A Appendix: Maxwell’s Equations References