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electrical charge demonstration
electrical charge demonstration

electrical charge demonstration

Date1900-1950
Inventory Number1997-1-1287
ClassificationElectrical Apparatus
Subject
    Maker American ?
    Cultural Region
      Dimensions15.8 × 15.2 × 8.9 cm (6 1/4 × 6 × 3 1/2 in.)
      Material
        DescriptionTwo metal bells, one on a glass post and one on a brass post. Mounted on a metal plate with a brass tower directly between the bells from which is suspended a pith ball on a thread.
        Signedunsigned
        FunctionThis is a classic demonstration to show the effect of electric charges. For a complete explanation, see e.g. the following website.
        electric bells or chimes
        electric bells or chimes
        English
        Date: circa 1830
        Object number: DW0028
        electric chimes
        electric chimes
        English
        Date: 1870-1900
        Object number: 1997-1-1766a,b
        box containing A.C. relays, electrical bells, and timers
        box containing A.C. relays, electrical bells, and timers
        Leach Relay Company
        Date: 1890-1930
        Object number: RS0531
        pith ball electrometer
        pith ball electrometer
        American
        Date: 1870-1930
        Object number: 1997-1-0645
        bell
        bell
        American
        Date: mid 19th-early 20th Century
        Object number: 1998-1-0555
        automatic course recorder
        automatic course recorder
        French
        Date: circa 1875
        Accessories: envelope with lead shot compass dial unidentified papers
        Object number: DW0601
        Bell #10 deskset ringer box
        Bell #10 deskset ringer box
        Western Electric Company
        Date: 1897-1898
        Object number: 8090a
        musical bells on a stand
        musical bells on a stand
        the Reverend John Prince
        Date: 1799
        Object number: 0090
        pith-ball electroscope
        pith-ball electroscope
        English
        Date: 1850-1900
        Object number: 1997-1-1315
        prototype Bell hand receiver
        prototype Bell hand receiver
        Alexander Graham Bell
        Date: circa 1877
        Accessories: 8002a
        Object number: 8002b
        test equipment
        test equipment
        Couch & Seeley Company
        Date: circa 1926
        Object number: 1990-1-0002b
        test equipment
        test equipment
        Couch & Seeley Company
        Date: circa 1926
        Object number: 1990-1-0002a