1690 in science
The year 1690 in science and technology involved some significant events.
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Astronomy
- Giovanni Cassini observes differential rotation within Jupiter's atmosphere.
- December – Earliest recorded sightings of the planet Uranus, by John Flamsteed, who mistakenly catalogues it as the star 34 Tauri.
Geography
- Vincenzo Coronelli gets published the first folio of the atlas Atlante Veneto.
Botany
- French horticulturalist Jean-Baptiste de La Quintinie's Instruction pour les jardins fruitiers et potagers is published posthumously.
Mathematics
- Izeki Tomotoki (井関 知辰) of Osaka publishes Sampo-Hakki (算法発揮), in which he gives the resultant and the Laplace expansion of the determinant for the n×n case. At about this date, Tanaka Yoshizane (田中 由真) also describes and applies the resultant, in Sampo-Funkai (算法紛解).
- Michel Rolle publishes Traité d'Algebre, in which he gives the first published description in Europe of Gaussian elimination.
Medicine
- Justine Siegemund publishes Die Kgl. Preußische und Chur-Brandenburgische Hof-Wehemutter ("The Court Midwife"), the first medical textbook in German written by a woman.
Technology
- February 3 – America's first paper money is printed in the Massachusetts Bay Colony.
- French physicist Denis Papin, while in Leipzig and having observed the mechanical power of atmospheric pressure on his 'digester', builds a working model of a reciprocating steam engine for pumping water, the first of its kind, though not efficient.
Births
- March 18 – Christian Goldbach, Prussian mathematician (died 1764)
Deaths
- February 3 – Elizabeth Walker, English pharmacist (born 1623)
- October 13 – Ole Borch, Danish polymath (born 1626)
- October 22 (bur.) – William Ball, English astronomer (born c. 1631)
gollark: I mean, if they won't actually... work as a doctor... then they aren't really very good.
gollark: > you could get the best damn doctor in the world, highest grades and shit, but you hire him and he doesnt treat minorities, what are you gonna do? He is the best qualified, after allThat would make them... not a good doctor?
gollark: > Well, it ends up being biased, just like life.Don't deliberately include *more*.
gollark: So come up with better scoring criteria, don't just bias the whole system.
gollark: Also, essays are the enemy of mankind and must be destroyed.
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