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polarization specimens
polarization specimens

polarization specimens

Date1875-1925
Inventory Number2006-1-0059b
ClassificationPolarization Specimens
Subject
    Cultural Region
      Dimensionsthinnest disc: 8.9 × 8.9 × 5 cm (3 1/2 × 3 1/2 × 1 15/16 in.)
      Material
        DescriptionThe six polarization samples are thick glass disks to which various shapes of glass and crystals are glued. These include:

        an irregular hexagon
        a thick circular disk
        an array of 5 circular disks
        an irregular flat crystal
        an irregular flat bit of glass or crystal
        a null sample (i.e., nothing glued to the large glass disk)
        Signedunsigned
        FunctionThis polariscope may have been used to project images of polarized samples to an audience.
        set of birefringent specimens mounted in cork
        Jean Baptiste François Soleil
        Date: 1835-1850
        Object number: 1998-1-0561
        mica disks and rectangles
        American
        Date: circa 1900
        Object number: 2007-1-0515
        quartz specimens with left and right Airy's spirals
        William Ladd
        Date: 1850-1870
        Object number: 2007-1-0529
        birefringent specimens mounted on square cork slides
        Wilhelm Steeg
        Date: circa 1855
        Object number: 1998-1-0564
        birefringent specimens mounted on square cork slides
        German
        Date: 1850-1870
        Object number: 2007-1-0438
        unannealed glass specimens in various shapes
        French
        Date: circa 1850
        Object number: 1998-1-0559
        calcite disks in paper envelopes
        American
        Date: 1883-1947
        Object number: 2007-1-0439
        birefringent specimens mounted in cork
        Jean Baptiste François Soleil
        Date: 1835-1850
        Object number: 1998-1-0562
        birefringent crystals mounted on glass
        W. Harold Tomlinson
        Date: circa 1910
        Accessories: mahogany box
        Object number: 1998-1-0522
        crystal mounted on glass and cork
        American
        Date: 1850-1875
        Object number: 2007-1-0450
        birefringent specimens mounted on cork slides
        French
        Date: 1850-1875
        Object number: 2007-1-0440
        set of 8 flasks of powdered phosphorescent specimens
        French
        Date: 1875-1900
        Accessories: case
        Object number: 1998-1-0897a