Anders Johan Lexell (24 December 1740 – 11 December [O.S. 30 November] 1784) was a Finnish-Swedish 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 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. (Wikipedia).
Murat Erdemsel & Sigrid Van Tilbeurgh - Vals
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From playlist The Holmboe Prize
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From playlist new retro synth wave pop OKÉ!
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From playlist Contributed talks One World Symposium 2020
Murat Erdemsel & Sigrid van Tilbeurg, Vals performance, Tango Soul Festival
Wellington, NZ, 24/03/2018
From playlist Tango
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From playlist SMRI Course: Yang-Baxter maps
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This is a really old video that I switched to Private years ago because Smoking is wrong. For the 100 episode I made it live again and YT redistributed it. Sorry for the confusion. SMOKING IS WRONG. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ GET STUFF SECTION: (If I did this right these should be w
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From playlist Public Lectures
Anders Fogh Rasmussen on the Geopolitical Challenges of Climate Change | Big Think
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From playlist Climate change: Challenges & solutions | Big Think
i built my house - Joshua Alipio
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