Geometric Model, L. Brill No. 12. Ser. 4, No. 2, Cylinder, Cone and Plane Transformable into One-Sheeted Hyperboloid and Hyperbolic Paraboloid
date: label: Date made
content: 1893
name: label: maker
content: Brill, L.
notes: label: Description
content: From the early nineteenth century, mathematicians and engineers have studied surfaces generated by motion. The gold threads of this model form a cylinder, the red ones a double cone. Rotating the top circle of the frame twists the gold threads and untwists the red ones, forming surfaces called hyperboloids. The blue threads, which initially lie in a plane, become a hyperbolic paraboloid. This model was made in Germany and exhibited at the Columbian Exposition, the world's fair held in Chicago in 1893. It came to the Smithsonian from the mathematics department of Wesleyan University in Connecticut.
label: Location
content: Currently not on view
place: label: place made
content: Germany: Hesse, Darmstadt
title: label: Title
content: Adjustable String Model
topic: label: Subject
content: Education
label: Subject
content: Worlds Fair
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: 1985.0112.009
label: accession number
content: 1985.0112
label: catalog number
content: 1985.0112.009
objectType: label: Object Name
content: geometric model
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: string (overall material)
label: Physical Description
content: glass (overall material)
label: Measurements
content: overall: 63.5 cm x 35 cm x 16 cm; 25 in x 13 3/4 in x 6 5/16 in