Museo Galileo
Virtual Museum
Prism with stand
    • Setting:
      Room X
    • Maker:
    • Date:
      second half 18th cent.
    • Materials:
      glass, wood, brass
    • Dimensions:
      185x75x86 mm, prism side 35 mm
    • Inventory:
    • Prism with stand (Inv. 746)

The wooden base holds two supports between which an equilateral glass prism is hinged by means of a brass ring nut. The base has two holes for inserting the pins of a support to position the prism on an optical bench or other fixture. Isaac Newton used instruments of this type for his famous experiments on the separation of white light into a polychromatic spectrum. The prism resembles other specimens in the Lorraine collection.