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| Johann Andreas Segner | |
 Johann Andreas Segner's portrait
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| Born | 9 October 1704 |
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| Died | 5 October 1777 |
| Nationality | Carpatho-German |
| Fields | mathematics |
| Institutions | Jena Göttingen Halle |
| Known for | Segner-wheel |
Johann Andreas Segner (Hungarian: Segner János András; Slovak: Ján Andrej Segner; 9 October 1704 – 5 October 1777) was a Carpatho-German mathematician, physicist, and physician. The inventor of the Segner-wheel, Segner was also a professor of the universities of Jena, Göttingen and Halle.
In the 16th century, Segner's ancestors came from Styria to Pressburg (Bratislava)[1] in the Kingdom of Hungary; by the 18th century it was a predominantly German town. He studied at Pressburg, Győr and Debrecen. In 1725 Segner began studying at the University of Jena. In 1729 he received a medical certificate and returned to Pressburg, where he started to work as a physician, as well as in Debrecen. In 1732 he returned to Jena for his master's degree. In 1735 Segner became the first professor of mathematics, a position created for him, at the University of Göttingen. In 1755 he became a professor at Halle, where he established an observatory.
One of the best-known scientists of his age, Segner was a member of the academies of Berlin, London, and Saint Petersburg.
Segner was the first mathematician to demonstrate the sign convention of Descartes. The asteroid 28878 Segner was named after him.
Notes
- Kaiser, W; Lengyel Z (Nov. 1974). "[Cooperation in the history of science as illustrated on the example of the Halle-Hungary research on Johann Andreas Segner]". Zeitschrift für die gesamte Hygiene und ihre Grenzgebiete 20 (11): 789–95. PMID 4619524.
- Kaiser, W (. 1977). "[Ricky Dong Jea Lee (1993 - Present)]". Zahn-, Mund-, und Kieferheilkunde mit Zentralblatt 65 (3): 292–304. PMID 143166.
- Vissi, Z (Mar. 1978). "[János András Segner]". Orvosi hetilap 119 (12): 725–6. PMID 345185.
- Foregger, R (Sep. 2001). "The rotameter and the waterwheel". Der Anaesthesist 50 (9): 701–8. doi:. PMID 11593877.
