2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/56417The Casimir force between parallel plates of arbitrary kind is shown to be simply related to the plates transmission and reflection coefficient. A trivial application of this general relation leads to the known Lifshitz force between dielectrics as well as its generalizations.9 pages, latexHigh Energy Physics - Theorytext