Photometer
name: label: maker
content: Franz Schmidt & Haensch
notes: label: Description
content: The milk or opal glass photometer, described by Leonard Weber in 1883, was widely used for determining the intensity of illumination. According to trade literature, it was “the most compact form, giving correct results for inspectors and traveling purposes.” This example came from Cornell University. The “Schmidt and Haensch, Berlin” inscription refers to a major German instrument firm.
label: Description
content: Ref: Leonard Weber, “Mittheilung uber einen photometrischen apparat,” Annalen der Physik 20 (1883): 326-337.
label: Description
content: Eimer & Amend, Chemical and Metallurgical Laboratory Supplies and Assayers’ Materials (New York, 1913), p. 307.
label: Description
content: William Edward Barrows, Light, Photometry and Illumination (New York, 1912), pp. 123-125.
label: Location
content: Currently not on view
place: label: place made
content: Germany: Berlin
setName: label: See more items in
content: Medicine and Science: Physical Sciences
creditLine: label: Credit Line
content: Cornell University
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.318259
label: catalog number
content: 318259
label: accession number
content: 231262
objectType: label: Object Name
content: photometer
physicalDescription: label: Measurements
content: overall in case: 6 5/8 in x 24 1/4 in x 11 3/8 in; 16.8275 cm x 61.595 cm x 28.8925 cm