CLAUSIUS, R. (RUDOLF). - RADIANT HEAT AND THE SECOND THERMODYNAMIC LAW.

Ueber die Concentration von Wärme- und Lichtstrahlen und die gränzen ihrer Wirkung. (Vorgetragen in der Züricher naturforschenden Gesellschaft am 22. Juni 1863).

Leipzig, Johann Ambrosius Barth, 1864. Without wrappers. In "Annalen der Physik und Chemie. Hrsg. von J.C. Poggendorff", Bd. 121, No 1. Pp. 1-192 a. 2 plates. (Entire issue offered). Clausius' paper: pp. 1-44. With titlepage to volume 121.

First apperance of an importent paper in which Clausius shows that radiant heat is not an exception to the Second Law of Thermodynamics; - it is and answer to some suggested counter-entropic processes.

"In 1864 he answered it in a long and detailled paper in which he made use of Kirchhoff's recent work on heat or blackbody radiation. Clausius' conclusion was unambiguous: radiant heat was no exception to the second law and it could not provide a means for escaping the heat death."(Helge Kragh "Matter and Spirit in the universe..", p. 48.

Order-nr.: 45076