I like this term ‘volumetric intensity’. I don’t know how common the term is, (some cursory googling just turned up one fusion paper from the 1990’s)) but it w

I like this term ‘volumetric intensity’. I don’t know how common the term is, (some cursory googling just turned up one fusion paper from the 1990’s)) but it would make appreciating Gauss’s Law in E+M much easier from the outset than the typical surface integral calculus typically used to introduce the subject.