Spectrograph
date: label: date made
content: 1913
name: label: maker
content: Adam Hilger, Ltd.
notes: label: Description
content: Littrow-type spectrograph with a quartz lens, a quartz prism, a photographic plate, and a “Adam Hilger LTD. London” inscription. Hilger introduced the form in 1908, and was soon selling examples to academic and industrial laboratories around the world. The American Brass Company, then the largest brass manufacturer in the United States, bought this example in 1913, and used it “to check the purity of the copper and zinc that went into their products, and to search out the reasons for variations in their properties that could not be accounted for by ordinary chemical analysis.”
label: Description
content: The basic design originated with Otto von Littrow (1843-1864), an Austrian astronomer and physicist known for his contributions in spectrometer instrumentation. It allows for compactness when long focal lengths are desired for high dispersion and high-resolution spectroscopy.
label: Description
content: Ref. Adam Hilger Ltd., <i>Spectrographs</i> (London, 1912), p. E2.
label: Description
content: Charles C. Nitchie, “The Earliest Industrial Spectrographic Installation in the United States,” <i>Applied Spectroscopy</i> 5 (1951): 3-4.
label: Description
content: W. H. Bassett and C. H. Davis, “Spectrum Analysis in an Industrial Laboratory,” <i>Transactions of the Institution of Mining and Metallurgical Engineers</i> 68 (1923): 662-669.
label: Location
content: Currently not on view
place: label: place made
content: United Kingdom: England, London
topic: label: Subject
content: Science & Scientific Instruments
setName: label: See more items in
content: Medicine and Science: Physical Sciences
creditLine: label: Credit Line
content: Anaconda American Brass Company
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.322453
label: catalog number
content: 322453
label: accession number
content: 248008
objectType: label: Object Name
content: spectrograph
physicalDescription: label: Measurements
content: overall: 7 in x 7 1/2 in x 79 in; 17.78 cm x 19.05 cm x 200.66 cm
label: Measurements
content: overall: 20 in x 84 1/4 in x 20 1/2 in; 50.8 cm x 213.995 cm x 52.07 cm