Template:Selected anniversaries/January 9: Difference between revisions
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||1793 – Jean-Pierre Blanchard becomes the first person to fly in a balloon in the United States. | ||1793 – Jean-Pierre Blanchard becomes the first person to fly in a balloon in the United States. | ||
File:Maria Gaetana Agnesi.jpg|link=Maria Gaetana Agnesi (nonfiction)|1799: Mathematician, philosopher, theologian, and humanitarian [[Maria Gaetana Agnesi (nonfiction)|Maria Gaetana Agnesi]] dies. She is credited with writing the first book discussing both differential and integral calculus. | File:Maria Gaetana Agnesi engraving.jpg|link=Maria Gaetana Agnesi (nonfiction)|1799: Mathematician, philosopher, theologian, and humanitarian [[Maria Gaetana Agnesi (nonfiction)|Maria Gaetana Agnesi]] dies. She is credited with writing the first book discussing both differential and integral calculus. | ||
File:Wizard Jan Kochanowski.jpg|link=Jan_Kochanowski|1800: Poet-Wizard [[Jan Kochanowski]] adapts [[Nebra sky disk (nonfiction)|Nebra sky disk]] for use as [[scrying engine]]. | File:Wizard Jan Kochanowski.jpg|link=Jan_Kochanowski|1800: Poet-Wizard [[Jan Kochanowski]] adapts [[Nebra sky disk (nonfiction)|Nebra sky disk]] for use as [[scrying engine]]. | ||
Revision as of 11:03, 4 February 2018
1799: Mathematician, philosopher, theologian, and humanitarian Maria Gaetana Agnesi dies. She is credited with writing the first book discussing both differential and integral calculus.
1800: Poet-Wizard Jan Kochanowski adapts Nebra sky disk for use as scrying engine.
1848: Astronomer Caroline Herschel dies. She discovered several comets, including the periodic comet 35P/Herschel-Rigollet, which bears her name.
1894: New England Telephone and Telegraph installs the first battery-operated telephone switchboard in Lexington, Massachusetts. (Shown here: another telephone exchange circa 1900.)
1917: Mathematician and philosopher Georg Cantor publishes new theory of sets derived from Gnomon algorithm functions. Colleagues hail it as "a magisterial contribution to science and art of detecting and preventing crimes against mathematical constants."
1989: Mathematician Marshall Harvey Stone dies. He contributed to real analysis, functional analysis, topology, and the study of Boolean algebra structures.