Template:Selected anniversaries/February 19

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  • 1473: Mathematician and astronomer Nicolaus Copernicus born. He will formulate a model of the universe that places the Sun rather than the Earth at the center of the universe.

    1473: Mathematician and astronomer Nicolaus Copernicus born. He will formulate a model of the universe that places the Sun rather than the Earth at the center of the universe.

  • 1596: Cryptographer and diplomat Blaise de Vigenère (nonfiction) dies. The Vigenère cipher was misattributed to him; Vigenère himself devised a different, stronger cipher.

    1596: Cryptographer and diplomat Blaise de Vigenère (nonfiction) dies. The Vigenère cipher was misattributed to him; Vigenère himself devised a different, stronger cipher.

  • 1600: The Peruvian stratovolcano Huaynaputina explodes in the most violent eruption in the recorded history of South America.

    1600: The Peruvian stratovolcano Huaynaputina explodes in the most violent eruption in the recorded history of South America.

  • 1616: The Inquisition asked a commission of theologians, known as qualifiers, about the propositions of the heliocentric view of the universe after Nicollo Lorin had accused Galileo Galilei of heretical remarks in a letter to his former student, Benedetto Castelli.

    1616: The Inquisition asked a commission of theologians, known as qualifiers, about the propositions of the heliocentric view of the universe after Nicollo Lorin had accused Galileo Galilei of heretical remarks in a letter to his former student, Benedetto Castelli.

  • 1799: Mathematician, physicist, and sailor Jean-Charles de Borda dies. He contributed to the development of the metric system, constructing a platinum standard meter, the basis of metric distance measurement.

    1799: Mathematician, physicist, and sailor Jean-Charles de Borda dies. He contributed to the development of the metric system, constructing a platinum standard meter, the basis of metric distance measurement.

  • 1897: Mathematician and academic Karl Weierstrass dies. He will be cited as the "father of modern analysis".

    1897: Mathematician and academic Karl Weierstrass dies. He will be cited as the "father of modern analysis".

  • 1937: Physicist and crime-fighter Maria Goeppert-Mayer publishes mathematical model for the structure of nuclear shells which detects and prevents crimes against physical constants.

    1937: Physicist and crime-fighter Maria Goeppert-Mayer publishes mathematical model for the structure of nuclear shells which detects and prevents crimes against physical constants.

  • 1946: Mathematician and academic Alan Turing presents the "Proposal for the Development in the Mathematics Division of an Automatic Computing Engine (ACE). This research proposal was presented to a meeting of the Executive Committee of the National Physical Laboratory (NPL) in Teddington, England, and approved at a second meeting held a month later.

    1946: Mathematician and academic Alan Turing presents the "Proposal for the Development in the Mathematics Division of an Automatic Computing Engine (ACE). This research proposal was presented to a meeting of the Executive Committee of the National Physical Laboratory (NPL) in Teddington, England, and approved at a second meeting held a month later.

  • 2016: Novelist, literary critic, and philosopher Umberto Eco dies. He cited James Joyce and Jorge Luis Borges as the two modern authors who have influenced his work the most.

    2016: Novelist, literary critic, and philosopher Umberto Eco dies. He cited James Joyce and Jorge Luis Borges as the two modern authors who have influenced his work the most.

  • 2017: Steganographic analysis of Alice Beta Paragliding reveals encrypted data "almost certainly related to secret programs within the ENIAC program."

    2017: Steganographic analysis of Alice Beta Paragliding reveals encrypted data "almost certainly related to secret programs within the ENIAC program."

  • 2016: Steganographic analysis of Three Kings 2 reveals "five hundred and twelve kilobytes" of previously unknown Gnomon algorithm functions.

    2016: Steganographic analysis of Three Kings 2 reveals "five hundred and twelve kilobytes" of previously unknown Gnomon algorithm functions.

  • 2017: Mathematician and dissident Igor Shafarevich dies. He made fundamental contributions to algebraic number theory, algebraic geometry, and arithmetic algebraic geometry.

    2017: Mathematician and dissident Igor Shafarevich dies. He made fundamental contributions to algebraic number theory, algebraic geometry, and arithmetic algebraic geometry.

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