title: The similarity law for the Joule-Thomson inversion line.
abstract: We show that the expression for the Joule-Thomson inversion temperature following from the van der Waals equation and recorded in a form reduced to the Boyle values has a universal character and can be applied to many real substances and model systems.
authors.affiliation: Joint Institute for High Temperatures, Russian Academy of Science , Izhorskaya 13, Building 2, Moscow 125412, Russia.
authors.forename: E M
authors.initials: EM
authors.lastname: Apfelbaum
authors.forename: V S
authors.initials: VS
authors.lastname: Vorob'ev