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Anders Johan Lexell — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/Anders_Johan_Lexell
License (as archived): CC-BY-SA-4.0
Archived: 2026-11-09T02:12:35.419Z
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Anders Johan Lexell — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/Anders_Johan_Lexell (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_660d8bfbacaa (Metraipolis archive dc_660d8bfbacaa, sha256 3e04627409fcb96dca8081bd88c1af9bfc35df44f2a4a3313fb37b6cd620fd42)

BibTeX

@misc{dc660d8bfbacaa,
  title = {Anders Johan Lexell — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/Anders_Johan_Lexell},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_660d8bfbacaa; sha256 3e04627409fcb96dca8081bd88c1af9bfc35df44f2a4a3313fb37b6cd620fd42},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/Anders_Johan_Lexell. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Anders Johan Lexell (24 December 1740 – 11 December [O.S. 30 November] 1784) was a Swedish-speaking Finnish astronomer, mathematician, and physicist who spent most of his life in Imperial Russia, where he was known as Andrei Ivanovich Leksel (Андрей Иванович Лексель). Lexell made important discoveries in polygonometry and celestial mechanics; the latter led to a comet named in his honour. La Grande Encyclopédie states that he was the prominent mathematician of his time who contributed to spherical trigonometry with new and interesting solutions, which he took as a basis for his research of comet and planet motion. His name was given to a theorem of spherical triangles. Lexell was one of the most prolific members of the Russian Academy of Sciences at that time, having published 66 papers in 16 years of his work there. A statement attributed to Leonhard Euler expresses high approval of Lexell's works: "Besides Lexell, such a paper could only be written by D'Alambert or me". Daniel Bernoulli also praised his work, writing in a letter to Johann Euler "I like Lexell's works, they are profound and interesting, and the value of them is increased even more because of his modesty, which adorns great men". Lexell was the first Finnish-born researcher to make a significant international contribution to mathematics and astronomy. Despite his career in Russia, his contemporary Henrik Gabriel Porthan noted that Lexell remained "Finnish at heart" throughout his life. Lexell was unmarried, and kept up a close friendship with Leonhard Euler and his family. He witnessed Euler's death at his house and succeeded Euler to the chair of the mathematics department at the Russian Academy of Sciences, but died the following year. The asteroid 2004 Lexell is named in his honour, as is the lunar crater Lexell.

Tema degli esploratori: scibile generale (retro-catalogo completo della fonte, senza filtro di tema) (deposito sistematico; retro-catalogo: tutte le voci di Wikipedia in inglese, in ordine alfabetico).
Fonte: Wikipedia in inglese, voce «Anders Johan Lexell» — https://en.wikipedia.org/wiki/Anders_Johan_Lexell
Wikidata Q447071: «astronomo e matematico finlandese» (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q447071
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/Anders_Johan_Lexell?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1377844767, consultata il 2026-11-09T02:09:31.997Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: b5878ea34d8716605389f2cb4ae9d47e5ab13beadf43edb5dbed89ec1ba1cc04