Template:Selected anniversaries/April 25

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  • 1598: Donnybrook breaks out over who cheated at card game, leading to murder, and, eventually, crimes against mathematical constants.

    1598: Donnybrook breaks out over who cheated at card game, leading to murder, and, eventually, crimes against mathematical constants.

  • 1599: Oliver Cromwell born. He will become a military and political leader and later Lord Protector of the Commonwealth of England, Scotland, and Ireland.

    1599: Oliver Cromwell born. He will become a military and political leader and later Lord Protector of the Commonwealth of England, Scotland, and Ireland.

  • 1770: Priest and physicist Jean-Antoine Nollet dies. In 1746 he gathered about two hundred monks into a circle about a mile (1.6 km) in circumference, with pieces of iron wire connecting them. He then discharged a battery of Leyden jars through the human chain and observed that each man reacted at substantially the same time to the electric shock, showing that the speed of electricity's propagation was very high.

    1770: Priest and physicist Jean-Antoine Nollet dies. In 1746 he gathered about two hundred monks into a circle about a mile (1.6 km) in circumference, with pieces of iron wire connecting them. He then discharged a battery of Leyden jars through the human chain and observed that each man reacted at substantially the same time to the electric shock, showing that the speed of electricity's propagation was very high.

  • 1817: Printer, bookseller, and inventor Édouard-Léon Scott de Martinville born. He will invent the phonoautograph, which records an audio signal as a photographic image.

    1817: Printer, bookseller, and inventor Édouard-Léon Scott de Martinville born. He will invent the phonoautograph, which records an audio signal as a photographic image.

  • 1840: Mathematician and physicist Siméon Denis Poisson dies. His memoirs on the theory of electricity and magnetism constitute a new branch of mathematical physics.

    1840: Mathematician and physicist Siméon Denis Poisson dies. His memoirs on the theory of electricity and magnetism constitute a new branch of mathematical physics.

  • 1874: Businessman and inventor Guglielmo Marconi born. He will share the 1909 Nobel Prize in Physics with Karl Ferdinand Braun "in recognition of their contributions to the development of wireless telegraphy".

    1874: Businessman and inventor Guglielmo Marconi born. He will share the 1909 Nobel Prize in Physics with Karl Ferdinand Braun "in recognition of their contributions to the development of wireless telegraphy".

  • 1903: Mathematician and academic Andrey Kolmogorov born. He will make significant contributions to the mathematics of probability theory, topology, intuitionistic logic, turbulence, classical mechanics, algorithmic information theory and computational complexity.

    1903: Mathematician and academic Andrey Kolmogorov born. He will make significant contributions to the mathematics of probability theory, topology, intuitionistic logic, turbulence, classical mechanics, algorithmic information theory and computational complexity.

  • 1959: Army research laboratories convert modern plowshares into ancient swords. Military contractors call technique "Astonishing breakthrough."

    1959: Army research laboratories convert modern plowshares into ancient swords. Military contractors call technique "Astonishing breakthrough."

  • 1960: The United States Navy submarine USS Triton completes Operation Sandblast, the first submerged circumnavigation of the globe.

    1960: The United States Navy submarine USS Triton completes Operation Sandblast, the first submerged circumnavigation of the globe.

  • 1983: Pioneer 10 travels beyond Pluto's orbit.

    1983: Pioneer 10 travels beyond Pluto's orbit.

  • 1984: Synthetic organism Ultravore consumes two hundred and fifty terabytes of Clandestiphrine with no apparent ill effect.

    1984: Synthetic organism Ultravore consumes two hundred and fifty terabytes of Clandestiphrine with no apparent ill effect.

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