Template:On This Day (nonfiction)/May 13

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  • 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.

  • 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.

  • 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.

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