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

See more items in: Medicine and Science: Physical Sciences


Exhibition Location:

Data Source: National Museum of American History

Id Number: PH.315639Catalog Number: 315639Accession Number: 217544

Object Name: dispersion meter

Measurements: overall: 44 cm x 18 cm; 17 5/16 in x 7 3/32 inoverall: 17 1/2 in x 7 in; 44.45 cm x 17.78 cm

Guid: http://n2t.net/ark:/65665/ng49ca746aa-391d-704b-e053-15f76fa0b4fa

Record Id: nmah_1184445

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