London: John Murray, 1884. Hardcover. First Edition. lxxx, 700, 103, 32 pp. 8vo. Terracotta cloth binding with blind embossed border on front and rear covers, gold embossed titling to spine. Previious owner's bookplate on front pastedown, clean within. Very Good.
George Francis FitzGerald (1851–1901) proposed testing Maxwell’s theory by producing electromagnetic waves with an oscillating circuit that would alternately charge and discharge a capacitor. Fitzgerald had calculated that the power of the electromagnetic waves generated in this way would increase with the fourth power of frequency, and this led him to propose a frequency of several million cycles per second and a design of a transmitting antenna. This was the method used by Heinrich Hertz to create and measure electromagnetic waves for the first time. Fitzgerald’s first two papers were published as “On the Energy lost by the Radiation from Alternating Electric Currents” and “On a Method of Producing Electromagnetic Disturbances of Comparatively Short Wave-lengths.”.