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pith ball electrometer
pith ball electrometer

pith ball electrometer

Datecirca 1750
Inventory NumberDW0359
ClassificationElectrometer
Subject
    Maker English ?
    Maker American ?
    Cultural Region
      Dimensions1.7 x 24.7 x 1.5 cm (11/16 x 9 3/4 x 9/16 in.)
      Material
        Accessoriespith balls; case
        DescriptionFrom Instrument Card:
        "Two pair of small pith balls on threads attached to brass ring. A long case grooved to fit threads and piths cover to match."
        Signedunsigned
        FunctionA device for qualitatively showing the intensity of electrification, because pith balls will repel each other more or less according to the amount of electricity they each possess.
        ProvenanceDavid Wheatland purchased from Sotheby's, London, June 25, 1968 (lot 48/5).
        pith ball electrometer
        pith ball electrometer
        American
        Date: 1870-1930
        Object number: 1997-1-0645
        box of pith balls
        box of pith balls
        American
        Date: 1920-1950
        Object number: 1997-1-1343
        pith balls
        pith balls
        Central Scientific Company
        Date: 1920-1950
        Accessories: card
        Object number: 1997-1-1321
        pith-ball electroscope
        pith-ball electroscope
        English
        Date: 1850-1900
        Object number: 1997-1-1315
        electrostatic stand
        electrostatic stand
        French
        Date: circa 1865
        Object number: DW0409
        glass bell for the determination of acoustics nodes
        glass bell for the determination of acoustics nodes
        French
        Date: 1855-1900
        Object number: DW0416
        pith ball electroscope
        pith ball electroscope
        Schlagintweit Brothers
        Date: circa 1850
        Object number: DW0781
        pith-ball electroscope
        pith-ball electroscope
        English
        Date: 1850-1900
        Object number: 1997-1-1347
        ball and track
        ball and track
        American
        Date: 1900-1920
        Accessories: metal balls (2)
        Object number: 0352
        Henley-type electrometer
        Henley-type electrometer
        French
        Date: 1820-1870
        Object number: DW0509
        base for collision balls pendulum
        base for collision balls pendulum
        Breton Frères
        Date: circa 1850
        Accessories: (b) top, (c) ivory balls
        Object number: DW0317a
        Henley's quadrant electrometer
        Henley's quadrant electrometer
        W. & S. Jones
        Date: 1815
        Object number: 0034