Editing 1690 in science

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{{Science year nav|1690}}

The year '''1690 in [[science]]''' and [[technology]] involved some significant events.

==Astronomy==
* [[Giovanni Domenico Cassini|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 [[Taurus (constellation)|Tauri]].

==Geography==
* Franciscan  [[Vincenzo Coronelli]] publishes the first folio of his atlas ''[[Atlante Veneto]]''.

==Botany==
* [[French people|French]] [[horticulturalist]] [[Jean-Baptiste de La Quintinie]]'s ''Instruction pour les jardins fruitiers et potagers'' is published posthumously.

==Mathematics==
* {{nihongo|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, {{nihongo|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 Chur-Brandenburgische Hof-Wehemutter'' ("The Court Midwife"), the first medical textbook in [[German language|German]] written by a woman.

==Technology==
* February 3 – America's first [[paper money]] is printed in the [[Massachusetts Bay Colony]].
* A rudimentary working model of a [[History of the compass#Liquid compass|liquid compass]] is introduced by Sir [[Edmond Halley]] at a meeting of the [[Royal Society]].
* 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 engine|reciprocating]] [[steam engine]] for pumping water, the first of its kind, though not efficient.

==Births==
* March 18 – [[Christian Goldbach]], [[Prussia]]n [[mathematician]] (died [[1764 in science|1764]])

==Deaths==
* [[February 3]] &ndash; [[Elizabeth Walker (pharmacist)|Elizabeth Walker]], English pharmacist (born [[1623 in science|1623]])
* October 13 – [[Ole Borch]], [[Danes|Danish]] [[polymath]] (born [[1626 in science|1626]])
* October 22 ''(bur.)'' – [[William Ball (astronomer)|William Ball]], [[English people|English]] [[astronomer]] (born c. [[1631 in science|1631]])

[[Category:1690 in science| ]]
[[Category:17th century in science]]
[[Category:1690s in science]]