HELMHOLTZ, HERMANN von.

Über die auf das Innere magnetisch oder elektrisch polarisirter Körper wirkende Kräfte.

Berlin, Akademie der Wissenschaften, 1881. Uncut in orig. printed wrappers. In: "Monatsbericht der Königlichen Preussischen Akademie der Wissenschaften zu Berlin." Februar issue 1881. Pp. 117-274 a. 2 plates. (Entire issue offered). Helmholtz's paper: pp. 191-213.

First appearance of this importent paper on the electromagnetic theory, proposing a complete theory of the phenomenon that insulators tend to alter their shape under the influence of dielectric forces.... "Helmholtz finally concludes from the expression for the forces, that the two views - that, namely, which postulates forces acting at a distance, and that of Farady-Maxwell, according to which there is only polarization of the media - may thus exist side by side." (Koenigsberger, pp. 329-30).

The issue contains Rudolf Virchow's paper "Über die ethnologische Bedeutung des Os malare bipartitum", pp. 230-267 and 1 folded lithographed plate.

Order-nr.: 45808