Helmholtz Double Siren
notes: label: Description
content: Double siren designed by the German scientist, Hermann von Helmholtz, and produced by Rudolph Koenig in Paris. It consisted of two Dove sirens facing one another, mounted on the same shaft, and connected to the same air supply. This example was purchased for the Smithsonian by Joseph Henry, the physicist who served as the founding Secretary of the Institution
label: Description
content: Ref: Rudolph Koenig, <i>Catalogue des Appareils d’Acoustique</i> (Paris, 1865), p. 9.
label: Description
content: Rudolph Koenig, <i>Catalogue des Appareils d’Accoustique</i> (Paris, 1889), p. 15.
label: Location
content: Currently not on view
setName: label: See more items in
content: Medicine and Science: Physical Sciences
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.317818
label: accession number
content: 231760
label: catalog number
content: 317818
objectType: label: Object Name
content: acoustic double siren
physicalDescription: label: Measurements
content: overall: 18 3/4 in x 9 7/8 in x 17 3/4 in; 47.625 cm x 25.0825 cm x 45.085 cm