Paris: Mallet-Bachelier, Imprimeur-Libraire de L'Ecole Polytechnique. 1853. First Edition, First Printing. Hardcover. Quarto, contemporary marbled boards with green cloth spine, leather label with titles in gilt on spine. 27 pp. Extrait du Journal de l'Ecole imperiale Polytechnique, XXXV Cahier. Mild foxing and browning, spine glazed; very good copy. Very Good. Item #4628
¶ FIRST SEPARATE EDITION of de Sénarmont's theories which lead to the invention of the de Sénarmont Compensator. de Sénarmont's work is based largely on the work of his predecessor, Augustin Fresnel (1788 - 1827) and his theory of Double Refraction. In 1843, de Sénarmont began working on a project that he would work on for many years, criticizing the mathematical theory of double refraction formed by Fresnel. The result was this work, and the developement of the de Sénarmont Compensator. Senarmont also edited the works of Fresnel. Fresnel is best known as the inventor of the Fresnel lens, first adopted in lighthouses while he was a French commissioner of lighthouses, and found in many applications today.