‎"KOPP, HERMANN. - CO-FOUNDING PHYSICAL CHEMISTRY.‎
‎Investigations of the Specific heat of Solid Bodies.‎

‎(London, Taylor & Francis, 1865). Large 4to. Without wrappers. Extracted from ""Philosophical Transactions of the Royal Society of London."", Vol. 155 - Part I. Pp. 71-202 and 1 lithographed plate. Clean and fine.‎

Reference : 42439

‎First printing. A major paper in physical chemistry, of which he may in some respects be regarded as the founder. Kopp's fame rests mainly, apart from the results presented here on physical chemistry, on his writings dealing with the history of chemistry.""In 1864 Kopp undertook the study of specific heats of a large number of elements and compounds, in an attempt to verify Neumann's law that the product of molecular weight and specific heat is a constant, regardless of the nature of the substance (in the paper offered). He found that in fact the relation was much more complicated and involved a large number of factors. He was, however, able to show that each element has the same specific heat in its free solid state as in its solid compounds. The specific heas of compounds could be calculated from those of their elements"" (DSB).‎