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Diasporameter

Diasporameter

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Description
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.
Ref: Maurice Daumas, Scientific Instruments in the Seventeenth and Eighteenth Centuries (New York, 1972), p. 271.
Lerebours et Secretan, Catalogue et Prix des Instruments (Paris, 1853), pp. 34-35.
Rochon, Receuil des Mémoires sur la Mécanique et de la Physique (Paris, 1783).
Location
Currently not on view
Object Name
Dispersion Meter
Measurements
overall: 44 cm x 18 cm; 17 5/16 in x 7 3/32 in
overall: 17 1/2 in x 7 in; 44.45 cm x 17.78 cm
ID Number
PH.315639
catalog number
315639
accession number
217544
See more items in
Medicine and Science: Physical Sciences
Data Source
National Museum of American History
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