Collected Papers: Volume II

This volume contains the important work which the late Professor H. A. Lorentz did to develop Maxwell's theory in the years before his middle age. It begins with the treatise concerning the relation be- tween the propagation of light and the density of media. The Lorenz- Lorentz formula is arrived at (page 57) and an electromagnetic dispersion theory of light is developed (p. 70, Bo) for the first time, so far as we know. This work was finished as early as I878: in an abridged form the resu...