Template:On This Day (nonfiction)/April 27

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  • 1791: Painter and inventor Samuel Morse born. He will co-invent the Morse code.

    1791: Painter and inventor Samuel Morse born. He will co-invent the Morse code.

  • 1837: Mathematician Paul Albert Gordan born. Gordon was known as "the king of invariant theory".

    1837: Mathematician Paul Albert Gordan born. Gordon was known as "the king of invariant theory".

  • 1913: Mathematician, author, activist, and academic Irving Adler born. He will be a plaintiff in the McCarthy-era case Adler vs. Board of Education.

    1913: Mathematician, author, activist, and academic Irving Adler born. He will be a plaintiff in the McCarthy-era case Adler vs. Board of Education.

  • 1938: Mathematician and philosopher Edmund Husserl dies. He argued that transcendental consciousness sets the limits of all possible knowledge.

    1938: Mathematician and philosopher Edmund Husserl dies. He argued that transcendental consciousness sets the limits of all possible knowledge.

  • 1978: Former United States President Nixon aide John D. Ehrlichman is released from an Arizona prison after serving 18 months for Watergate-related crimes.

    1978: Former United States President Nixon aide John D. Ehrlichman is released from an Arizona prison after serving 18 months for Watergate-related crimes.

  • 1992: Physicist and space activist Gerard Kitchen O'Neill dies. He invented particle storage rings and mass drivers; in the 1970s he developed a plan to build human settlements in outer space.

    1992: Physicist and space activist Gerard Kitchen O'Neill dies. He invented particle storage rings and mass drivers; in the 1970s he developed a plan to build human settlements in outer space.

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