Template:Selected anniversaries/May 13: Difference between revisions

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||1885: Ferdinand Minding dies ... mathematician known for his contributions to differential geometry. Minding considered questions of bending of surfaces and proved the invariance of geodesic curvature. He studied ruled surfaces, developable surfaces and surfaces of revolution and determined geodesics on the pseudosphere. Pic.
||1885: Ferdinand Minding dies ... mathematician known for his contributions to differential geometry. Minding considered questions of bending of surfaces and proved the invariance of geodesic curvature. He studied ruled surfaces, developable surfaces and surfaces of revolution and determined geodesics on the pseudosphere. Pic.
||1888: Hans-Thilo Schmidt born ... codenamed Asché or Source D, was a spy who, during the 1930s, sold secrets about the Germans' Enigma machine to the French. The materials he provided facilitated Polish mathematician Marian Rejewski's reconstruction of the wiring in the Enigma's rotors and reflector; thereafter the Poles were able to read a large proportion of Enigma-enciphered traffic. Pic.


||1888: With the passage of the Lei Áurea ("Golden Law"), Empire of Brazil abolishes slavery.
||1888: With the passage of the Lei Áurea ("Golden Law"), Empire of Brazil abolishes slavery.

Revision as of 18:10, 9 March 2020

  • 1713: Mathematician, astronomer, and geophysicist Alexis Clairaut born. His work will help to establish the validity of the principles and results that Sir Isaac Newton had outlined in the Principia of 1687.

    1713: Mathematician, astronomer, and geophysicist Alexis Clairaut born. His work will help to establish the validity of the principles and results that Sir Isaac Newton had outlined in the Principia of 1687.

  • 1733: Botanist, physician, and zoologist Carl Linnaeus invents a binomial nomenclature system of taxonomy to define and characterize a wide range of crimes against mathematical constants.

    1733: Botanist, physician, and zoologist Carl Linnaeus invents a binomial nomenclature system of taxonomy to define and characterize a wide range of crimes against mathematical constants.

  • 1762: First use of Japanese rod calculus to confirm the APTO Accords.

    1762: First use of Japanese rod calculus to confirm the APTO Accords.

  • 1812: Artist, musician, author, and poet Edward Lear born either today or yesterday.

    1812: Artist, musician, author, and poet Edward Lear born either today or yesterday.

  • 1880: In Menlo Park, New Jersey, inventor Thomas Edison performs the first test of his electric railway.

    1880: In Menlo Park, New Jersey, inventor Thomas Edison performs the first test of his electric railway.

  • 1929: Electrical engineer and inventor Arthur Scherbius dies. He invented and patented the famous mechanical cipher Enigma machine.

    1929: Electrical engineer and inventor Arthur Scherbius dies. He invented and patented the famous mechanical cipher Enigma machine.

  • 1936: The Safe-Cracker wins Pulitzer Prize, hailed as "most daring illustration of the year."

    1936: The Safe-Cracker wins Pulitzer Prize, hailed as "most daring illustration of the year."

  • 1937: Writer Roger Zelazny born. He will win the Nebula award three times, and the Hugo award six times.

    1937: Writer Roger Zelazny born. He will win the Nebula award three times, and the Hugo award six times.

  • 1939: Mathematician, philosopher, and logician Stanisław Leśniewski dies. He posited three nested formal systems, to which he will give the Greek-derived names of protothetic, ontology, and mereology.

    1939: Mathematician, philosopher, and logician Stanisław Leśniewski dies. He posited three nested formal systems, to which he will give the Greek-derived names of protothetic, ontology, and mereology.

  • 1974: Physicist and chemist Marguerite Perey dies. Perey discovered the element francium while purifying samples of lanthanum.

    1974: Physicist and chemist Marguerite Perey dies. Perey discovered the element francium while purifying samples of lanthanum.

  • 2018: Green City Skyline voted Picture of the Day by the citizens of New Minneapolis, Canada.

    2018: Green City Skyline voted Picture of the Day by the citizens of New Minneapolis, Canada.

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