OHM, Georg Simon (1789-1854). Die galvanische Kette, mathematisch bearbeitet, Berlin: T.H. Riemann, 1827, 8°, FIRST EDITION, one plate (perforation on title, accession stamp on following leaf, verso of plate stamped), contemporary boards (backstrip torn) [Dibner 63; Honeyman 2359 (lacking the plate); Horblit 81: "the discovery of Ohm's law, the fundamental law of electrical circuits, namely that E (electromotive force) equals I (current) x R (resistance)"; Norman 1607; PMM 289; Sparrow 154; Wheeler Gift 835] Provenance: JCL