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handheld photo-polarimeter
handheld photo-polarimeter

handheld photo-polarimeter

Date1890-1910
Inventory NumberBH0143
ClassificationPolarimeter
Subject
    Maker Jules Duboscq & Philibért François Pellin 1885 - 1912
    User Blue Hill Meteorological Observatory 1885-present
    Cultural Region
      Place of Origin
        Dimensionspolarimeter: 6.7 × 6.7 × 35.4 cm (2 5/8 × 2 5/8 × 13 15/16 in.)
        case: 8.4 × 37.5 × 9.9 cm (3 5/16 × 14 3/4 × 3 7/8 in.)
        Material
          DescriptionA long optical tube with an eyepiece at one end and inside, Wollaston and Nicol prisms. There is also a graduated circle (0-360) divided in single degrees to determine the angle of polarization. The instrument is stored in a felt-lined case.

          A short description (in German) is provided at the following website.
          Signedon tube: Photo-polarimètre de Mr. Cornu / Mon. Jules Duboscq / Ph. Pellin / Paris.
          FunctionThis instrument was designed by Cornu especially to determine the polarization of atmospheric light. It was thus used in meteorology. The instrument shows three vertical strips of light. One determines the plane of polarization of light by rotating the analyzer until the instensities of the strips are equal.
          ProvenanceFrom the Blue Hill Meteorological Observatory, Milton, MA.
          set of accessories for use with an optical bench
          set of accessories for use with an optical bench
          Jules Duboscq & Philibért François Pellin
          Date: 1885-1900
          Object number: 1997-1-1481
          arc lamp with electrical interrupter
          arc lamp with electrical interrupter
          Louis Jules Duboscq
          Date: 1860-1879, 1882-1885
          Object number: 1997-1-0687
          arc lamp with electrical interrupter
          arc lamp with electrical interrupter
          Louis Jules Duboscq
          Date: 1860-1879, 1882-1885
          Object number: 1997-1-0688
          arc lamp with electrical interrupter
          arc lamp with electrical interrupter
          Louis Jules Duboscq
          Date: 1860-1879, 1882-1885
          Object number: 1996-1-0669
          vertical projector
          vertical projector
          Jules Duboscq & Philibért François Pellin
          Date: 1890-1910
          Object number: 1997-1-1712
          beam splitter
          beam splitter
          Jules Duboscq & Philibért François Pellin
          Date: 1885-1912
          Accessories: case
          Object number: 1998-1-0509
          pyrometer
          pyrometer
          Jules Duboscq & Philibért François Pellin
          Date: circa 1910
          Object number: 1998-1-0448
          saccharimeter (polaristrobometer)
          saccharimeter (polaristrobometer)
          Hermann & Pfister
          Date: circa 1872
          Accessories: pine box; instruction manual; glass tubes (2); open-ended tube; gas lamp (DW0854b)
          Object number: DW0854a
          insulated stand
          insulated stand
          American
          Date: 1850-1900
          Object number: 1997-1-0652
          Sharp-Millar photometer
          Sharp-Millar photometer
          Foote, Pierson & Company
          Date: 1910-1920
          Object number: 2006-1-0018
          equilateral prism on stand
          equilateral prism on stand
          Philibért François Pellin
          Date: 1885-1886
          Object number: WJ0037
          the Boston universal pantograph
          the Boston universal pantograph
          Gottfried G. Ledder
          Date: circa 1904
          Accessories: triangular mahogany case
          Object number: 1997-1-1857