Indian mathematics

2015-01-05T15:50:18Z

49.200.127.69: /* Vedic period */

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Deflection (engineering)

2014-01-26T05:25:31Z

49.200.95.38: /* Center loaded beam */

{{Infobox scientist
|name = Andreas von Ettingshausen
|image = Andreas von Ettingshausen.jpg
|image_size = 220px
|caption = Andreas Freiherr von Ettingshausen (1796–1878)
|birth_date = 25 November 1796
|birth_place = [[Heidelberg]], [[Electorate of the Palatinate]]
|death_date = 25 May 1878
|death_place = [[Vienna]], [[Austria-Hungary]]
|residence = Austria
|citizenship =
|nationality = German
|ethnicity =
|fields = [[Physicist]] and [[mathematician]]
|workplaces = [[University of Innsbruck]] [[University of Vienna]] [[Vienna University of Technology|Vienna Polytechnic Institute]]
|alma_mater = [[University of Vienna]]
|doctoral_advisor = Ignaz Lindner
|academic_advisors =
|doctoral_students = [[Ernst Mach]] [[Jožef Stefan]] [[Viktor von Lang]]
|notable_students =
|known_for = [[Electric machine]]s
|author_abbrev_bot =
|author_abbrev_zoo =
|influences =
|influenced =
|awards =
|religion =
|signature = 
|footnotes =
}}

'''Andreas Freiherr von Ettingshausen''' (25 November 1796 – 25 May 1878) was a [[Germans|German]] [[mathematician]] and [[physicist]].

Ettingshausen studied [[philosophy]] and [[jurisprudence]] in [[Vienna]]. In 1817, he joined the [[University of Vienna]] and taught mathematics and physics. In 1819 he became professor of physics at the [[University of Innsbruck]] and 1821 professor of higher mathematics at the [[University of Vienna]]. His lectures of that time marked a new era for the [[University of Vienna]], and they were published in 1827 in 2 volumes. In 1834 Ettingshausen became the chair of physics.

Ettingshausen was the first to design an [[Electric machine|electromagnetic machine]], which used the electrical induction for power generation. He promoted [[optics]] and wrote a text book of physics. His method of lecturing was widely influential. In addition he wrote a book on [[combinatorial analysis]] (Vienna 1826). In 1866, he retired.

Among his lasting impacts in mathematics is the introduction of the notation <math> \tbinom nk </math> for the [[binomial coefficient]], which is the [[coefficient]] of ''xk'' in the expansion of the [[binomial]] (''x''+1)''n'' and, more generally, the number of ''k''-[[element (set theory)|element]] [[subsets]] of an ''n''-element [[set (mathematics)|set]].<ref>{{cite book |author=[[Nicholas J. Higham]] |title=Handbook of Writing for the Mathematical Sciences |publisher=[[Society for Industrial and Applied Mathematics]] |isbn=0-89871-420-6 |page=25}}</ref>

== References ==
{{reflist}}

== External links ==
* {{DNB portal|116585749|TYP=}}
* [http://aeiou.iicm.tugraz.at/aeiou.encyclop.e/e864693.htm Biography of Ettingshausen]

{{Authority control|VIAF=25357566}}

{{Persondata 
| NAME = Ettingshausen, Andreas Von
| ALTERNATIVE NAMES =
| SHORT DESCRIPTION = Austrian-German mathematician
| DATE OF BIRTH = 25 November 1796
| PLACE OF BIRTH = [[Heidelberg]], [[Electorate of the Palatinate]]
| DATE OF DEATH = 25 May 1878
| PLACE OF DEATH = [[Vienna]], [[Austria]]
}}
{{DEFAULTSORT:Ettingshausen, Andreas Von}}
[[Category:19th-century Austrian people]]
[[Category:Austrian scientists]]
[[Category:Austrian physicists]]
[[Category:German scientists]]
[[Category:German physicists]]
[[Category:Austrian mathematicians]]
[[Category:German mathematicians]]
[[Category:University of Vienna alumni]]
[[Category:University of Vienna faculty]]
[[Category:University of Innsbruck faculty]]
[[Category:German untitled nobility]]
[[Category:Austrian people of German descent]]
[[Category:People from Heidelberg]]
[[Category:1796 births]]
[[Category:1878 deaths]]

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Indian mathematics

Deflection (engineering)