December 12

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  • 1204: Rabbi, philosopher, astronomer, and physician Maimonides dies.

    1204: Rabbi, philosopher, astronomer, and physician Maimonides dies.

  • 1685: Mathematician John Pell dies. He expanded the scope of algebra in the theory of equations.

    1685: Mathematician John Pell dies. He expanded the scope of algebra in the theory of equations.

  • 1862: USS Cairo sinks on the Yazoo River, becoming the first armored ship to be sunk by an electrically detonated mine.

    1862: USS Cairo sinks on the Yazoo River, becoming the first armored ship to be sunk by an electrically detonated mine.

  • 1901: Guglielmo Marconi receives the first transatlantic radio signal (the letter "S" in Morse Code), at Signal Hill in St John's, Newfoundland.

    1901: Guglielmo Marconi receives the first transatlantic radio signal (the letter "S" in Morse Code), at Signal Hill in St John's, Newfoundland.

  • 1921: Astronomer Henrietta Swan Leavitt dies. She discovered the relation between the luminosity and the period of Cepheid variable stars.

    1921: Astronomer Henrietta Swan Leavitt dies. She discovered the relation between the luminosity and the period of Cepheid variable stars.

  • 1966: The Beatles release Dr. Robber.

    1966: The Beatles release Dr. Robber.

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