1690 in science

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

Astronomy[edit]

Botany[edit]

Mathematics[edit]

  • Izeki Tomotoki (井関 知辰?) of Osaka publishes Sampo-Hakki (算法発揮), in which he gives the resultant and the Laplace formula 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).

Medicine[edit]

  • 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[edit]

Births[edit]

Deaths[edit]