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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 See also:

drew to his lectures a See also:

CROWD, CROUTH, CROWTH

crowd of enthusiastic scholars, on whom he impressed the importance of applied See also:

SCIENCE (Lat. scientia, from scire; to learn, know)

science by conducting them See also:

ROUND (O. Fr. rond, Lat. rotundus, the Fr. is the source also of Du. rond; Ger., Swed., Dan. and Nor. rond)

round the factories and work-shops of the See also:

CITY (through Fr. cite, from Lat. civitas)

city; and he further found See also:

time to hold weekly " colloquies " on See also:

PHYSICAL

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

discovery of the first of the platino-ammonium compounds (" Magnus's See also:

green See also:

salt " is Ptll,, 2NHa), of sulphovinic, ethionic and isethionic acids and their salts, and, in See also:

CONJUNCTION (from Lat. conjungere, to join together)

conjunction with C. F. Ammermuller, of periodic See also:

ACID (from the Lat. root ac-, sharp; acere, to be sour)

acid. Among other subjects at which he subsequently worked were the absorption of gases in See also:

BLOOD

blood (1837-1845), the expansion of gases by See also:

HEAT (0. E. haktu, which like " hot," Old Eng. hat, is from the Teutonic type haita, hit, to be hot; cf. Ger. hitze, heiss; Dutch, hitte, heet, &c.)

heat (1841-1844), the vapour pressures of See also:

WATER

water and various solutions (1844-1854), thermo-See also:

ELECTRICITY

electricity (1851), See also:

ELECTROLYSIS (formed from Gr. Xbety, to loosen)

electrolysis (1856), See also:

INDUCTION (from Lat. inducere, to lead into; cf. Gr. ilrayu yli)

induction of currents (1858-1861), See also:

CONDUCTION, ELECTRIC

conduction of heat in gases (186o), and polarization of heat (1866-1868). From 1861 onwards he devoted much See also:

ATTENTION (from Lat. ad-tendo, await, expect; the condition of being " stretched " or " tense ")

attention to the question of diathermancy in gases and vapours, especially to the behaviour in this respect of dry and moist See also:

air, and to the thermal effects produced by the condensation of moisture on solid surfaces. In 1834 Magnus was elected extraordinary, and in 1845 See also:

ORDINARY (med. Lat. ordinarius, Fr. ordinaire)

ordinary See also:

PROFESSOR (the Latin noun formed from the verb profiteri, to declare publicly, to acknowledge, profess)

professor at Berlin.

He was. three times elected See also:

dean of the See also:

FACULTY (through the French, from the Lat. facultas, ability to do anything, from facilis, easy, facere, to do; another form of the word in Lat. facilitas, facility, ease, keeps the original meaning)

faculty, in 1847, 1858 and 1863; and in 1861, See also:

RECTOR (Lat. for " ruler," " guide," &c., from regere, " rule ")

rector magnificus. His See also:

GREAT

great reputation led to his being entrusted by the See also:

government with several See also:

MISSIONS (Lat. missio, a sending)

missions; in 1865 he represented See also:

Prussia in the See also:

CONFERENCE

conference called at See also:

FRANKFORT

Frankfort to introduce a See also:

UNIFORM

uniform metric See also:

SYSTEM

system of weights and See also:

MEASURES

measures into See also:

Germany. For See also:

FORTY

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

death on the 4th of See also:

APRIL

April 1870. He married in 184o Bertha Humblot, of a See also:

French Huguenot See also:

FAMILY

family settled in Berlin, by whom he See also:

LEFT

left a son and two daughters. See Allgemeine deutsche Biog. The Royal Society's See also:

CATALOGUE (a Fr. adaptation of the Gr. KaraXoyos, a register, from Karalyety, to enrol or pick out)

Catalogue enumerates 84 papers by Magnus, most of which originally appeared in See also:

POGGENDORFF, JOHANN CHRISTIAN (1796-1877)

Poggendorff's Annalen.

End of Article: MAGNUS, HEINRICH GUSTAV (1802-1870)

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