Results for "Allegheny Observatory"

     
    Showing results 13 - 24 of 31 for Allegheny Observatory
    1. Document

      SIA2008-0763

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      • SI History Chronology

        Clerk Karr Dismissed for Embezzlement

        • Date: 1905

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      • Document

        SIA2008-0765

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        • Samuel Pierpont Langley and the Personal Equation Problem

          • Date: April 12, 2018
          • Description: The term “personal equation” came into use in the 19th century as scientists found that observers have inherent biases: some anticipate events, and some report events after they have occurred. Recognition of the problem led to a spate of personal equation instruments: some measured biases of this sort, and some reduced the effect of personal errors. Most of these

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        • Finding Aid

          SIA RU000085, Smithsonian Astrophysical Observatory, Records, 1923-1954

          • Date: 1923 1923-1954
          • Creator: Smithsonian Astrophysical Observatory
          • Creator: Smithsonian Institution Archives

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        • Finding Aid

          SIA Acc. 99-151, Smithsonian Astrophysical Observatory Subcontracts and Procurement Department, Trust Fund Subcontracts, 1966-1980

          • Date: 1966 1966-1980
          • Creator: Smithsonian Astrophysical Observatory. Subcontracts and Procurement Department
          • Creator: Smithsonian Institution Archives

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        • Finding Aid

          SIA RU007005, Abbot, C. G (Charles Greeley) 1872-1973, Charles G. Abbot Papers, 1889-1973, and Records of the Smithsonian Astrophysical Observatory

          • Date: 1889 1889-1973
          • Creator: Abbot, C. G. (Charles Greeley), 1872-1973
          • Creator: Smithsonian Institution Archives

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        • Document

          Torch 09/1959

          • Description: SIA Record Unit 000371, Smithsonian Institution., Office of Public Affairs, The Torch, 1955-1960, 1965-1988, 1959 Box 1 Folder 9

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        • Document

          Torch 08/1956

          • Description: SIA Record Unit 000371, Smithsonian Institution., Office of Public Affairs, The Torch, 1955-1960, 1965-1988, Box 1 Folder 8

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        • Finding Aid

          SIA RU000565, Smithsonian Institution Buildings Management Department, Records, 1899-1958

          • Date: 1899 1899-1958
          • Creator: Smithsonian Institution. Buildings Management Department
          • Creator: Smithsonian Institution Archives

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        • Finding Aid

          SIA Acc. 09-008, Bé, Allan W. H. 1921-, Allan W. H. Bé Papers, circa 1953-1969

          • Date: 1953 1953-1969 circa 1953-1969
          • Creator: Bé, Allan W. H., 1921-
          • Creator: Smithsonian Institution Archives

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        • Finding Aid

          SIA RU000031, Smithsonian Institution Office of the Secretary, Correspondence, 1866-1906, with related records to 1927

          • Date: 1866 1866-1927 1866-1906, with related records to 1927
          • Creator: Smithsonian Institution. Office of the Secretary
          • Creator: Smithsonian Institution Archives

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        Showing results 13 - 24 of 31 for Allegheny Observatory

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