Maxwell’s equations for electromagnetism are the fundamental understanding of how light behaves. There are various versions, depending on whether there is vacuum, a charge present, matter present, the system is relativistic or quantum, or are written in terms of differential or integral calculus. Here, I inaugurate a multi-part series on a discussion of each of Maxwell’s equations. The goal is for this series to become the definitive explanation of these rules (I know, a heady goal!). I trust readers will let me know if I succeed. In this first installment, we will discuss a little bit of historical development as a prelude to the introduction of the laws themselves.