Template:Selected anniversaries/October 29: Difference between revisions

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||1866: Carl Gustav Witt born ... astronomer and discover of two asteroids who worked at the Berlin Urania Observatory, a popular observatory of the Urania astronomical association of Berlin. Pic.
||1866: Carl Gustav Witt born ... astronomer and discover of two asteroids who worked at the Berlin Urania Observatory, a popular observatory of the Urania astronomical association of Berlin. Pic.


||1878 Patent issued for Odhner calculating machine. *VFR Willigot T. Odhner was granted a patent for a calculating machine that performed multiplications by repeated additions. The patent, a modified and compact version of Gottfried von Leibniz stepped wheel, was acquired and embodied in Brunsviga calculators that sold into 1950s.*CHM https://pballew.blogspot.com/2018/10/on-this-day-in-math-october-29.html
||1866: Sam Eyde born ... engineer and industrialist, founder of both Norsk Hydro and Elkem. Pic.
 
||1878: Patent issued for Odhner calculating machine. *VFR Willigot T. Odhner was granted a patent for a calculating machine that performed multiplications by repeated additions. The patent, a modified and compact version of Gottfried von Leibniz stepped wheel, was acquired and embodied in Brunsviga calculators that sold into 1950s.*CHM https://pballew.blogspot.com/2018/10/on-this-day-in-math-october-29.html


||1880: Abram Ioffe born ... physicist and academic ... an expert in electromagnetism, radiology, crystals, high-impact physics, thermoelectricity and photoelectricity. He established research laboratories for radioactivity, superconductivity, and nuclear physics. Pic.
||1880: Abram Ioffe born ... physicist and academic ... an expert in electromagnetism, radiology, crystals, high-impact physics, thermoelectricity and photoelectricity. He established research laboratories for radioactivity, superconductivity, and nuclear physics. Pic.

Revision as of 06:23, 8 March 2020