A Calculus of Measures and Its Application to the Relation between Rationalized and Unrationalized Electromagnetic Systems Available to Purchase

When changing units and in dimensional analysis it is usual to employ the relation, $physical quantity = measure×unit$⁠. Neither the “physical quantity” nor the “unit” is supposed to be a real number and yet the formalism is normally effective. This fact is given a rational explanation and the ideas involved are used to discuss certain questions connected with the rationalization of the electromagnetic equations.