Diasporameter
notes: label: Description
content: Alexis-Marie de Rochon (1741-1817) was a French astronomer and physicist who, in 1776, devised a “diasporameter” for measuring the dispersion of prisms of various substances. This unsigned example was probably made in Paris in the mid-nineteenth century.
label: Description
content: Ref: Maurice Daumas, <i>Scientific Instruments in the Seventeenth and Eighteenth Centuries</i> (New York, 1972), p. 271.
label: Description
content: Lerebours et Secretan, <i>Catalogue et Prix des Instruments</i> (Paris, 1853), pp. 34-35.
label: Description
content: Rochon, <i>Receuil des Mémoires sur la Mécanique et de la Physique</i> (Paris, 1783).
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.315639
label: catalog number
content: 315639
label: accession number
content: 217544
objectType: label: Object Name
content: dispersion meter
physicalDescription: label: Measurements
content: overall: 44 cm x 18 cm; 17 5/16 in x 7 3/32 in
label: Measurements
content: overall: 17 1/2 in x 7 in; 44.45 cm x 17.78 cm