Ebenezer Cunningham

“ Larmor's scheme of the æther does not apply if that scheme is stated accurately as follows:— "The propagation of electromagnetic effects through space, relative to a given frame of reference, may be illustrated by the propagation of disturbances in a rotationally elastic medium, it being possible for a given frame of reference to construct such a medium, in which the rotational displacement at any point is proportional to the electric force at that point, and the velocity relative to the frame of a point of the medium is proportional to the magnetic force." ”

“ The longest-living author of this work died in 1977, so this work is in the public domain in countries and areas where the copyright term is the author's life plus 45 years or less. This work may be in the public domain in countries and areas with longer native copyright terms that apply the rule of the shorter term to foreign works. ”