BRANLY'S COHERER: "Variations de conductibilities sous diverses influences electriques" (Comptes rendus hebdomadaires des séances de l’Académie des Sciences; Vol. 111 pp. 785-787).

Paris: Gauthier-Villars, 1890. Wraps. First Edition. 1172 pp. 4to. Wear and cuffing to original light salmon colored wraps. Original paper label pasted to spine with Volume # and year handwritten in black ink. Clean within, most pages uncut. Text in French. Housed in custom protective chemise with gold embossed titling to spine. Very Good.
Edouard Branly (1844-1940) demonstrates the first sensitive device for detecting radio waves, later named the "coherer."
[Book #27363]

Price: $600.00

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