Intensitas vis magneticae terrestris ad mensuram absolutam revocata.
1833 · Gottingae:
by GAUSS, Carl Friedrich (1777-1855).
Gottingae:: Dieterich, 1833., 1833. 4to. (268 x 215 mm) 44 pp. Original plain wrappers; edges chipped. Exlib stamp on title-page, bookplate of Andras Gedeon. Housed in a modern clamshell box. Very good. FIRST SEPARATE EDITION of Gauss' most important geomagnetic work, from Gesellschaft der Wissenschaften zu Gottingen. "An account of the measurement of magnetic force, containing the first systematic use of absolute units (distance, mass, time) to measure a non-mechanical quantity." [Honeyman]. "The great publication of Gauss, in which he measures magnetic action in ordinary mechanical or absolute units." [Merzbach]. Preceding the work of Mayer, this was the basis for the exhaustive and monumental researches of Weber. This most important work, "was done in collaboration with the physicist Wilhelm Weber, with whom, from 1831-1837, he performed a series of studies on the nature and intensity of the earth's magnetism. Their first collaborative work, Intensitas vis magneticae terrestris, is an account of the measurement of magnetic force, containing the first systematic use of absolute units to measure a non-mechanical quantity. Weber's name does not appear on the title, but his contributions are acknowledged in the text." [Norman]. Darmstaedter S. 403; DSB Vol. V, p. 305; Ekelof 892; Honeyman 1455; Merzbach 1841a; Norman 881; Poggendorff I, 855; Wheeler Gift 867. (Inventory #: S10005)