Heliostat
date: label: date made
content: 1879-1882
name: label: maker
content: Duboscq, Jules
notes: label: Description
content: A heliostat throws sunlight where it might be needed, whether for photography or scientific observations. This example has a large rectangular mirror, clockwork mechanism, and circular base, mounted on a wooden table. It came from the U.S. Military Academy at West Point. Its inscription reads “J. & A. DUBOSCQ / REMODELED BY WM GRUNOW.” Jules Duboscq, a noted optical instrument maker in Paris, worked in partnership with Albert Duboscq, his nephew and son-in-law, from 1879 to 1882.
label: Description
content: This form was devised by the French physicist, Leon Foucault. Jules Duboscq built the first example in 1863.
label: Description
content: Ref: Maison Jules Duboscq, <i>Historique & Catalogue de tous les Instruments d’Optique Supérieure Appliqués aux Sciences et à l’Industrie</i> (Paris, 1885), p. 4.
label: Location
content: Currently not on view
place: label: place made
content: France: Île-de-France, Paris
topic: label: Subject
content: Science & Scientific Instruments
setName: label: See more items in
content: Medicine and Science: Physical Sciences
creditLine: label: Credit Line
content: U.S. Military Academy
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.315756
label: catalog number
content: 315756
label: accession number
content: 217544
objectType: label: Object Name
content: heliostat
physicalDescription: label: Measurements
content: overall: 43 3/4 in x 33 in x 19 3/8 in; 111.125 cm x 83.82 cm x 49.2125 cm