franklin benjamin watson (2 Ergebnisse)

London, Lockyer Davis, 1773. 4to. Without wrappers. Extracted from "Philosophical Transactions", vol. 63, part 1. Including title-page of volume. Title-page reinforced in inner margin, otherwise a fine copy. Pp. (2), 41-48. First appearance of Franklin's report on affixing electrical conductors to five gunpowder magazines, a safeguard against the blowing up of a magazine by lightning. When the Purlfeet magazines were struck by lightning in 1777, the powder did not explode, and the buildings escaped serious damage (Weld, History of the Royal Society, 97).

London, C. Davis, 1753. 4to. Without wrappers. Extracted from "Philosophical Transactions", vol. 47. First leaf detached, otherwise fine. Pp. 201-212. First appearance of this paper in which several of Franklin's most important electrical experiments are presented. An accomplished botanist, apothecary and electrical experimenter in his own right, Watson here summarizes "a few of the most singular" of Franklin's electrical experiments.