Geometric Model, L. Brill No. 10. Carton Ser. No. 3, Hyperboloid of One Sheet
date: label: date made
content: 1892
name: label: maker
content: L. Brill
notes: label: Description
content: In the nineteenth and early twentieth century, students studying technical subjects often learned about the representation of surfaces by equations in courses in solid analytic geometry. Schools in Europe, the United States, and Japan sometimes purchased models to illustrate such surfaces. The firm of Ludwig Brill in Darmstadt published this one as part of a series of paper models (the “Carton” series) designed by Alexander Brill and first issued in 1874. This particular example was exhibited at the German Educational Exhibit at the Columbian Exposition held in Chicago in 1893, where it was purchased by Wesleyan University.
label: Description
content: The orange paper model of a one-sheeted hyperboloid consists of portions of seventeen circles intersecting portions of seventeen other circles. A mark stamped on the object reads: Verlag von L. Brill in Darmstadt. The model is in a gray paper envelope which also contains model 1985.112.003. The envelope is in a brown box with the other models in the Carton series.
label: Description
content: The model shows an hyperboloid of one sheet, a surface that can be represented by the equation x<sup>2</sup>/a<sup>2</sup> + y<sup>2</sup>/ b<sup>2</sup> - z<sup>2</sup>/c<sup>2</sup> = 1. Here z is a horizontal axis, with the x and y-axes perpendicular to it. The model is displayed on a stand that is part of 1985.0112.005.
label: Description
content: Reference:
label: Description
content: L. Brill, <I>Catalog</I>, 1892, p. 1, 59.
label: Location
content: Currently not on view
place: label: place made
content: Germany: Hesse, Darmstadt
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of Wesleyan University
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1985.0112.007
label: catalog number
content: 1985.0112.007
label: accession number
content: 1985.0112
objectType: label: Object Name
content: geometric model
physicalDescription: label: Physical Description
content: paper (overall material)
label: Measurements
content: overall: 7 cm x 12.5 cm x 9 cm; 2 3/4 in x 4 15/16 in x 3 9/16 in