Museo Galileo
Virtual Museum
Nobili's hydroelectric galvanometer
    • Setting:
      Room XVI
    • Inventor:
      Leopoldo Nobili
    • Maker:
    • Date:
      ca. 1830
    • Materials:
      wood, brass, glass, paper
    • Dimensions:
      total height 200 mm, base 150 mm
    • Inventory:
    • Nobili's hydroelectric galvanometer (Inv. 366)
    • Nobili's hydroelectric galvanometer (Inv. 366)

The black wooden base of this galvanometer carried a lead stabilizing ring (missing). A cylindrical glass cover carries the suspension for the astatic needles. The coil, wound on a boxwood bobbin, has many windings of fine wire, probably silver, covered with silk. This version of Nobili's galvanometer was used to measure "hydroelectric" currents generated by chemical action. Provenance: Lorraine collections.