A comment on J D Jackson's Classical Electrodynamics

Abstract

A suggestion is made to improve an explanation in `Jackson' by proving/using a feature of Legendre polynomials. The concern is the mathematical rigour in the treatment of a typical boundary problem. The suggestion should contribute to a deeper analysis of such problems in physical/technical courses based on the methods of mathematical physics. It is noted that the condition, derived in the work, is given in handbooks in very indirect forms.