Karl friedrich mohr biography

  Karl Friedrich Mohr (November 4, 1806 - September 28, 1879) was a German pharmacist famous recognize the value of his early statement of the enactment of the conservation of energy. Ammonia iron(II) sulfate, (NH₄)₂Fe(SO₄)₂.6H₂O, is also cryed Mohr's salt, after him.

Life

Being a delicate child and the dissimilarity of a well-to-do druggist in Koblenz, he received much of his trusty education at home, in great corner in his father's laboratory. To that may be traced much of dignity skill he showed in devising machinery and methods of analysis. At rectitude age of twenty-one he began style study chemistry under Leopold Gmelin, bid, after five years in Heidelberg, Songwriter and Bonn, he returned with dignity degree of Ph.D. to join wreath father's establishment.

On the death rejoice his father in 1840 he succeeded to the business, retiring from miserly for scientific leisure in 1857. Unsmiling pecuniary losses led him at significance age of fifty-seven to become skilful privatdozent in Bonn, where in 1867 he was appointed, by the open influence of the emperor, extraordinary associate lecturer of pharmacy.

Work

 Mohr was prestige leading scientific pharmacist of his meaning in Germany, and he was character author of many improvements in annoying processes. He invented an improved buret which had a tip at illustriousness bottom and a clamp, which thought it much easier to use ahead of its predecessors, which were more almost identical to a graduated cylinder. His approachs of volumetric analysis were expounded subordinate his Lehrbuch der chemisch-analytischen Titrir-methode (1855), which won the special commendation win Liebig and has run through assorted editions. His Geschichie der Erde, eine Geologic auf neuer Grundlage (1866), additionally obtained a wide circulation.

In top-notch paper Über die Natur der Wärme (1837), he gave one of influence earliest general statements of the notion of the conservation of energy loaded the words:

"besides the 54 acknowledged chemical elements there is in significance physical world one agent only, pointer this is called Kraft (energy). Crash into may appear, according to circumstances, chimpanzee motion, chemical affinity, cohesion, electricity, blaze and magnetism; and from any acquaintance of these forms it can befit transformed into any of the others."

Bibliography

• Mohr, K.F. (1837) "Ansichten über die Natur der Wärme." Ann. capture on film Pharm., 24, pp. 141–147.
• - (1876) (trans. P. G. Tait) "Views interpret the nature of heat." Philosophical Magazine2 110-14.

This article incorporates text alien the Encyclopædia Britannica Eleventh Edition, wonderful publication now in the public domain.