Geometric Model by A. Harry Wheeler, Compound of Two One-Sided Polyhedra
name: label: maker
content: Wheeler, Albert Harry
notes: label: Description
content: This clear plastic model consists of two models (or, in Wheeler’s language, cells) in the form of 1979.0102.200, one atop the other. Each cell contributes six faces to the model, for a total of twelve. The model also has a total of nine vertices (twelve from each cell, but three coinciding), and twenty-one edges twelve from each cell, but three of these overlapping). Denoting by e the number of vertices, k the number of edges, and f the number of faces, the Euler characteristic of the model is e – k + f = 9 – 21 + 12 = 0. The model has no marks on it. However, Wheeler’s catalog gives a model of this description numbers 709 and M68.
label: Description
content: Compare MA.304723.403 and MA.304723.406.
label: Description
content: Reference:
label: Description
content: A.H. Wheeler, <I>Catalog of Models</I>, A. H. Wheeler Papers, Mathematics Collections, National Museum of American History.
label: Location
content: Currently not on view
place: label: place made
content: United States: Massachusetts, Worcester
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
creditLine: label: Credit Line
content: Gift of Louise D. Campbell
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1979.0102.201
label: accession number
content: 1979.0102
label: catalog number
content: 1979.0102.201
objectType: label: Object Name
content: Geometric Model
physicalDescription: label: Physical Description
content: plastic (overall material)
label: Measurements
content: overall: 6.8 cm x 7.7 cm x 3.2 cm; 2 11/16 in x 3 1/32 in x 1 1/4 in