Hans Max Jahn (4 July 1853 – 7 August 1906) was a German physical chemist who worked on thermochemistry and electrochemistry. As an experimental chemist he identified problems in the contemporary theory of electrolyte conductivity and examined the thermodynamic validity of the Gibbs-Helmholtz equation. Jahn was born in Küstrin (now in Poland) and was educated at the Universities of Berlin and Heidelberg in chemistry and mathematics. His early influences included

A. W. von Hofmann August Wilhelm von Hofmann (8 April 18185 May 1892) was a German chemist who made considerable contributions to organic chemistry. His research on aniline helped lay the basis of the aniline-dye industry, and his research on coal tar laid the g ...

whom he assisted as a student,

Robert Bunsen Robert Wilhelm Eberhard Bunsen (; 30 March 1811 – 16 August 1899) was a German chemist. He investigated emission spectra of heated elements, and discovered caesium (in 1860) and rubidium (in 1861) with the physicist Gustav Kirchhoff. The Bu ...

, G. Kirchhoff and the mathematician L. Kronecker. After receiving a doctorate in 1875 for work in organic chemistry he became an assistant to

Anastassios Christomanos Anastasios Christomanos (, 1841 - 1906) was one of the most important Greek scientists of the later part of the 19th century. His academic collaborators were some of the most important scientists in the world, including Robert Bunsen, Georg Lud ...

at Athens. In 1877 he moved to Vienna, working under Ernst Ludwig (1842–1915) and in 1884 he moved to Graz. From 1899 he taught at the agricultural school and university in Berlin. Jahn worked with

Walther Nernst Walther Hermann Nernst (; 25 June 1864 – 18 November 1941) was a German physical chemist known for his work in thermodynamics, physical chemistry, electrochemistry, and solid-state physics. His formulation of the Nernst heat theorem helped ...

and one of his experimental result in 1900 was that there was an increased conductivity with an increase in concentration of certain electrolytes. This went against the theory that Svante August Arrhenius has proposed and resulted in a major debate. Jahn married Sophie von Sichrovsky in 1883. Jahn was a keen violinist but suffered from deteriorating hearing. He died in 1906 following complications after an appendictomy.

References

External links

* Grundriss der Elektrochemie (1895) {{DEFAULTSORT:Jahn, Hans Max 1853 births 1906 deaths German physical chemists Electrochemists Heidelberg University alumni