Heliostat
date: label: date made
content: 1850-1900
name: label: maker
content: Duboscq, Jules
label: maker
content: Garnier, Jean Paul
notes: label: Description
content: A heliostat throws sunlight where it might be used for photography or scientific observations. This example has an octangular mirror (13 cm x 7.3 cm), a clockwork mechanism, and tri-leg base with leveling screws. The inscription on the clock housing reads “J. T. Silbermann Invteur / Fait par J. Duboscq à Paris” and “No. 89.” That on the clock movement reads “PAUL GARNIER PARIS 4051.”
label: Description
content: Jean Thiebaut Silbermann (1806-1865), a physics demonstrator at the Conservatoire des Arts et Métiers in Paris, designed the form in 1843. J. B. F. Soleil made the first examples. Jules Duboscq, Soleil's son-in-law and successor, was still offering these instruments in 1880s. Jean Paul Garnier (1801-1869) was a clockmaker in Paris.
label: Description
content: Ref: J. T. Silbermann, “Rapport fait à l’Académie Royale des Sciences sur un nouvel heliostat,” <i>Annales de Chimie et de Physique</i> 10 (1844): 298-306.
label: Description
content: Maison Jules Duboscq, <i>Historique & Catalogue de tous les Instruments d’Optique Supérieure Appliqués aux Sciences et à l’Industrie</i> (Paris, 1885), pp. 3-4.
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
label: See more items in
content: Science & Mathematics
label: See more items in
content: Optics
creditLine: label: Credit Line
content: Weston College
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.328484
label: catalog number
content: 328484
label: accession number
content: 271661
objectType: label: Object Name
content: Heliostat
physicalDescription: label: Measurements
content: overall: 12 in; 30.48 cm
label: Measurements
content: overall: 15 7/16 in x 10 1/4 in x 9 1/4 in; 39.21125 cm x 26.035 cm x 23.495 cm