Johan gottlieb gahn biography
- Johan Gottlieb Gahn (19 August 1745 – 8 December 1818) was a Swedish chemist and metallurgist who isolated manganese in 1774.
- Johan Gottlieb Gahn was a Swedish chemist and metallurgist who isolated manganese in 1774.
- Johan Gottlieb Gahn was a Swedish mineralogist and crystallographer who discovered manganese in 1774.
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Gahn, Johan Gottlieb
(b. Ovanåker, Sweden, 19 August 1745; d. Falun, Sweden, 8 December 1818)
mineralogy, chemistry.
Gahn studied physics and chemistry at Uppsala from 1762 to 1770. When Torbern Bergman was appointed professor of chemistry there in 1767, Gahn became his laboratory assistant. After passing in 1770 the examination for mining engineer, he worked at the College of Mining, where he was assigned the task of applying new and more scientific methods to the copper smelting processes at the Falun mine in the Kopparberg district. For four years he worked exclusively with copper smelting, introducing important improvements and solving many technical problems. Above all, he modernized the methods for using the by-products of the smelting process, among them sulfur, iron sulfate, red pigment, copper mastic, and copper precipitate. Gahn performed his chemical research in a well-equipped laboratory that he installed at his own expense in his garden at Falun.
Although he seldom took the time to write down his observations and published almost nothing, rumors of Gahn’s
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Johan Gottlieb Gahn
| Johan Gottlieb Gahn | |
|---|---|
| Rođenje | 19. august 1745. Voxna bruk, Hälsingland, Švedska |
| Smrt | 8. decembar 1818(1818-12-08) (73 godine) Falun, Švedska |
| Državljanstvo | švedsko |
| Polje | hemija |
| Poznat(a) po | otkriću mangana |
Johan Gottlieb Gahn bio je švedskihemičar i metalurg, poznat po otkriću mangana 1774.[1]
Studirao je u Uppsali između 1762. i 1770. i tu se upoznao sa hemičarima Torbernom Bergmanom i Carlom Wilhelmom Scheeleom.[2] 1770. godine preselio se u Falun, gdje je uveo poboljšanja u proces topljenja bakra te je učestvovao u izgradnji nekoliko tvornica, uključujući tvornice za vitriol, sumpor i crvenu boju.
Bio je hemičar u Bergskollegiumu, švedskom odboru za rudnike od 1773. do 1817. Međutim, Gahn se dosta ustručavao da lično objavi svoja naučna dostignuća, ali je o njima slobodnije komunicirao sa Bergmanom i Scheeleom. Jedno od Gahnovih otkrića bilo je da se mangan-dioksid može reducirati do metalnog mangana koristeći ugljik, čime je postao prvi naučnik koji je izolirao ovaj element u njegovom metalnom o
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Johan Gottlieb Gahn
Swedish chemist (1745–1818)
Johan Gottlieb Gahn | |
|---|---|
Johan Gottlieb Gahn | |
| Born | (1745-08-19)19 August 1745 Voxna bruk, Hälsingland |
| Died | 8 December 1818(1818-12-08) (aged 73) Falun |
| Nationality | Swedish |
| Known for | Discovery of manganese |
| Scientific career | |
| Fields | Chemistry |
Johan Gottlieb Gahn (19 August 1745 – 8 December 1818) was a Swedishchemist and metallurgist who isolated manganese in 1774.[1]
Gahn studied in Uppsala from 1762 to 1770 and became acquainted with chemists Torbern Bergman and Carl Wilhelm Scheele.[2] 1770 he settled in Falun, where he introduced improvements in copper smelting, and participated in building up several factories, including those for vitriol, sulfur and red paint.
He was the chemist for the Swedish Board of Mines from 1773 to 1817. He was very reluctant to publish his scientific findings himself, but freely communicated them to Bergman and Scheele. One of Gahn's discoveries was that manganese dioxide could be reduced to manganese metal using carbon, becoming
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