Template:Selected anniversaries/September 19

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  • 1710: Astronomer and instrument maker Ole Rømer dies. He made the first quantitative measurements of the speed of light.

    1710: Astronomer and instrument maker Ole Rømer dies. He made the first quantitative measurements of the speed of light.

  • 1749: Mathematician and astronomer Jean Baptiste Joseph Delambre born. He will be one of the first astronomers to derive astronomical equations from analytical formulas.

    1749: Mathematician and astronomer Jean Baptiste Joseph Delambre born. He will be one of the first astronomers to derive astronomical equations from analytical formulas.

  • 1761: Mathematician, astronomer, and philosopher Pieter van Musschenbroek dies. He invented the first capacitor in 1746: the Leyden jar.

    1761: Mathematician, astronomer, and philosopher Pieter van Musschenbroek dies. He invented the first capacitor in 1746: the Leyden jar.

  • 1811: Mathematician and religious leader Orson Pratt born. As part of his system of Mormon theology, Pratt will embrace the philosophical doctrine of hylozoism.

    1811: Mathematician and religious leader Orson Pratt born. As part of his system of Mormon theology, Pratt will embrace the philosophical doctrine of hylozoism.

  • 1845: Famed gem detective and diplomat Niles Cartouchian foils villains, returns stolen relics, brokers peace accord.

    1845: Famed gem detective and diplomat Niles Cartouchian foils villains, returns stolen relics, brokers peace accord.

  • 1894: Mathematician Giuseppe Peano writes to Felix Klein, "The purpose of mathematical logic is to analyze the ideas and reasoning that especially figure in the mathematical sciences."

    1894: Mathematician Giuseppe Peano writes to Felix Klein, "The purpose of mathematical logic is to analyze the ideas and reasoning that especially figure in the mathematical sciences."

  • 1921: Chemist and physicist James Dewar develops liquid gas condensor for use in fighting crimes against mathematical constants.

    1921: Chemist and physicist James Dewar develops liquid gas condensor for use in fighting crimes against mathematical constants.

  • "Fightin'" Bert Russell]] defeats Joseph Stalin in three-round bare-knuckle boxing matc.

    "Fightin'" Bert Russell]] defeats Joseph Stalin in three-round bare-knuckle boxing matc.

  • 1935: Scientist and engineer Konstantin Tsiolkovsky dies. He was one of the founding fathers of modern rocketry and astronautics.

    1935: Scientist and engineer Konstantin Tsiolkovsky dies. He was one of the founding fathers of modern rocketry and astronautics.

  • 2017: Dennis Paulson of Mars credits scientist and engineer Konstantin Tsiolkovsky for "inspiring generations of astronauts."

    2017: Dennis Paulson of Mars credits scientist and engineer Konstantin Tsiolkovsky for "inspiring generations of astronauts."

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