purpose of each of the "operators", divergence, gradient and curl? Hi. Can anybody give me a reasonably simple explanation of what the purpose of each of the "operators", divergence, gradient and curl? (I've been looking but I never found something simple to understand) I know how to evaluate them mathematically, but I really don't know what they mean or what I accomplish... Can anybody shed some light on the matter? Also, how can they be applied to E&M? Thanks loads.