Clausius, Rudolf, an eminent German physicist, born at Köslin, in Pomerania; professor of Natural Philosophy at Bonn; specially distinguished for his contributions to the science of thermo-dynamics, and the application of mathematical methods to the study, as also to electricity and the expansion of gases (1822‒1888).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Clausewitz, Karl von * Claverhouse, John Graham of, Viscount Dundee