Appendix A. The SI System of Units
In this appendix we review briefly the basic equations of electromagnetism when written in the SI (System International, or rationalized mksa) system of units. Conversion between the SI and gaussian systems of units is summarized in an additional appendix. The intent of this appendix is to establish notation and not to present a rigorous exposition of electromagnetic theory.
In the SI system, mechanical properties are measured in mks units, that is, distance is measured in meters (m), mass in kilograms (kg), and time in seconds (s). The unit of force is thus the kg m/sec2, known as a newton (N), and the unit of energy is the kg m2/sec2, known as the joule (J). The fundamental electrical unit is a ...