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pith-ball electroscope
pith-ball electroscope

pith-ball electroscope

Date1850-1900
Inventory Number1997-1-1315
ClassificationElectrical Apparatus
Subject
    Maker English ?
    Cultural Region
      Dimensions44.5 x 8.5 cm (17 1/2 x 3 3/8 in.)
      Material
        DescriptionBrass hook standing upright on a circular base. A thread is attached to the hook's end. A gilded pith ball hangs from the thread.
        Signedunsigned
        FunctionTo experiment with electrostatic phenomena. For more information on this type of instrument, go to the following website.
        ProvenanceMallinckrodt Chemical Laboratory, Harvard University; transferred to CHSI November 1, 1948.
        pith-ball electroscope
        pith-ball electroscope
        English
        Date: 1850-1900
        Object number: 1997-1-1347
        pith ball electrometer
        pith ball electrometer
        American
        Date: 1870-1930
        Object number: 1997-1-0645
        pith ball electrometer
        pith ball electrometer
        English
        Date: circa 1750
        Accessories: pith balls; case
        Object number: DW0359
        pith ball electroscope
        pith ball electroscope
        Schlagintweit Brothers
        Date: circa 1850
        Object number: DW0781
        crooked wire for electrical chimes or pith ball
        crooked wire for electrical chimes or pith ball
        English
        Date: 1775-1850
        Object number: 1997-1-1419
        box of pith balls
        box of pith balls
        American
        Date: 1920-1950
        Object number: 1997-1-1343
        electric bells or chimes
        electric bells or chimes
        English
        Date: circa 1830
        Object number: DW0028
        Portable darkroom closed for travel.
        portable darkroom
        Richard W. Thomas
        Date: circa 1861
        Accessories: bottle and beaker (1998-1-1634a); hydrometer and manual (1998-1-1634b)
        Object number: 1998-1-1634
        electrical charge demonstration
        electrical charge demonstration
        American
        Date: 1900-1950
        Object number: 1997-1-1287
        pith balls
        pith balls
        Central Scientific Company
        Date: 1920-1950
        Accessories: card
        Object number: 1997-1-1321
        quadrant electroscope
        quadrant electroscope
        English
        Date: 1780-1810
        Object number: DW0015
        Fuller integrator
        Fuller integrator
        Edwin S. Fuller
        Date: circa 1935
        Accessories: wooden box
        Object number: 1997-1-2059