Electrical arcs Electrical arcs

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Detail of two figures showing forms of electrical arcs between a primary and receiving conducting spheres: figure 1 shows a branched 'lighting' arc; figure 2 a sinuous powered by t he electrostatic generator and associated conducting machinery designed by John Cuthbertson (bap.1743-d.1821) for Martin van Marum.and installed at Teyler's Museum at Haarlem in the Netherlands. Plate 3 from Beschryving eene ongemeen groote electrizeer-machine geplaatst in Teyler's Museum...by Martinus van Marum (Haarlemn, 1785). The plate is inscribed upper right: 'Pl. III'; and below 'C.H.Koning Fecit. Martin van Marum was elected a Fellow of the Royal Society in 1798.Original: mezzotint. 1785 Show more