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sound reflecting parabolic dish

sound reflecting parabolic dish

Date1870-1910
Inventory Number1996-1-0547a
ClassificationReflecting Dish
Subject
    Maker H. B. & W. O. Chamberlain fl. 1866 - 1875
    Cultural Region
      Place of Origin
        Dimensionsas photographed: 43 × 25 × 18 cm (16 15/16 × 9 13/16 × 7 1/16 in.)
        Material
          DescriptionA metallic dish in a paraboloid shape is supported by a thin rod and solid base. The height is adjustable.
          Signedon base: H. B. & W. O. CHAMBERLAIN / BOSTON
          FunctionWhen someone stands at the focus point of the parabolic dish, a sound made is reflected outward by the dish in parallel waves, just like for light. If you put a similar dish in the sound waves path, they will be reflected back to the focus point, thus enabling someone else to hear what had been said at the other end.
          sound reflecting parabolic dish
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          H. B. & W. O. Chamberlain
          Date: 1870-1910
          Object number: 1996-1-0547b
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