See also:born at Berlin on the 2nd of May 1802 . His
See also:father was a wealthy
See also:merchant; and of his five
See also:brothers one, Eduard (1799-1872), became a celebrated painter . After studying at Berlin, he went to
See also:Stockholm to
See also:work under
See also:Berzelius, and later to
See also:Paris, where he studied for a while under Gay-Lussac and
See also:Thenard . In 1831 he returned to Berlin as lecturer on technology and physics at the university . As a teacher his success was rapid and extraordinary . His lucid
See also:style and the perfection of his experimental demonstrations drew to his lectures a
See also:crowd of enthusiastic scholars, on whom he impressed the importance of applied science by conducting them
See also:round the factories and work-shops of the city; and he further found
See also:time to hold weekly " colloquies " on
See also:physical questions at his
See also:house with a small circle of
See also:young students . From 1827 to 1833 he was occupied mainly with chemical researches, which resulted in the
See also:discovery of the first of the platino-ammonium compounds ("
See also:salt " is Ptll,, 2NHa), of sulphovinic, ethionic and isethionic acids and their salts, and, in conjunction with C . F . Ammermuller, of periodic acid . Among other subjects at which he subsequently worked were the absorption of gases in
See also:blood (1837-1845), the expansion of gases by
See also:heat (1841-1844), the vapour pressures of
See also:water and various solutions (1844-1854), thermo-
See also:electricity (1851), electrolysis (1856), induction of currents (1858-1861),
See also:conduction of heat in gases (186o), and polarization of heat (1866-1868) . From 1861 onwards he devoted much
See also:attention to the question of diathermancy in gases and vapours, especially to the behaviour in this respect of dry and moist air, and to the thermal effects produced by the condensation of moisture on solid surfaces . In 1834 Magnus was elected extraordinary, and in 1845 ordinary
See also:professor at Berlin .
He was. three times electeddean of the
See also:faculty, in 1847, 1858 and 1863; and in 1861, rector magnificus . His
See also:great reputation led to his being entrusted by the
See also:government with several
See also:missions; in 1865 he represented Prussia in the
See also:conference called at
See also:Frankfort to introduce a
See also:uniform metric
See also:system of weights and
See also:measures into Germany . For
See also:forty-five years his labour was incessant; his first memoir was published in 1825 when he was yet a student; his last appeared shortly after his
See also:death on the 4th of
See also:April 1870 . He married in 184o Bertha Humblot, of a French Huguenot
See also:family settled in Berlin, by whom he
See also:left a son and two daughters . See Allgemeine deutsche Biog . The Royal Society's
See also:Catalogue enumerates 84 papers by Magnus, most of which originally appeared in Poggendorff's Annalen .
MARQUIS DE CLAUDE DRIGON MAGNY (1797-1879)
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