Galton's inaudible whistle.

maker:
Francis Galton
Adjustable whistle in nickel silver

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Adjustable whistle in nickel silver
Science Museum Group
© The Board of Trustees of the Science Museum

Adjustable whistle in nickel silver, designed by Sir Francis Galton for determining the upper limit of audible sound, unsigned, British, 1890-1911.

Details

Category:
Acoustics
Object Number:
1894-279
Materials:
nickel silver (nickel, copper, zinc alloy)
Measurements:
overall: 80 mm 12 mm, Wt, 0.03kg
type:
galton's whistle
credit:
Harvey & Peak