Ruled Surface, Elliptic Double Cone and Hyperboloid of One Sheet, L Brill No.11 or M. Schilling No. 16), Ser 4, No. 1
notes: label: Description
content: This string model with a metal frame shows two ruled surfaces, that is to say surfaces swept out by moving straight lines. On the outside, shown in blue threads, is a doubly ruled hyperboloid of one sheet with an elliptic base and top. On the inside is an elliptic double cone, erected on the same base and top and shown in yellow.
label: Description
content: The model was published by the firm of Ludwig Brill in Darmstadt and by its successor, Martin Schilling of Leipzig.
label: Description
content: Compare 1985.0112.008 (a Brill model)
label: Description
content: References:
label: Description
content: Ludwig Brill, <I>Catalog mathematischer Modelle. . .</I>, Darmstadt: L. Brill, 1892, p. 9, 58.
label: Description
content: Henry Burchard Fine and Henry Dallas Thompson, <I>Coordinate Geometry</I>, New York: Macmillan Company, 1931, pp. 251-253. An example of this model is shown in Figure 6.
label: Description
content: Martin Schilling, <I>Catalog</I>, 1911, p. 9, 112.
label: Location
content: Currently not on view
place: label: place made
content: Germany
label: place made
content: Germany
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 Brown University Department of Mathematics
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MA.304722.43
label: catalog number
content: 304722.43
label: accession number
content: 304722
objectType: label: Object Name
content: Geometric Model
label: Object Name
content: geometric model
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: thread (overall material)
label: Measurements
content: overall: 25.7 cm x 21.7 cm x 14.5 cm; 10 1/8 in x 8 17/32 in x 5 23/32 in