Geometric Model by A. Harry Wheeler, One-Sided Polyhedron
name: label: maker
content: Wheeler, Albert Harry
notes: label: Description
content: The underlying structure of this plastic model is a rhombic dodecahedron with a four-sided slanting pyramid erected on each face. The triangular sides of the pyramids are not equilateral, but are congruent. The triangles are colored blue, turquoise, and black (sixteen of each). Each triangle is coplanar with one other triangle of the same color, reducing the number of faces to 24. A paper tag on the model reads: M 6. Another mark reads: 647. A third mark reads: e=18 (/) k=48 (/) f=24 (1) e-k+f= -6. Here e is the number of vertices (Wheeler used the German ecken), k is the number of edges (kanten in German) and f is the number of faces. Wheeler classified the model as M6 in his one-sided polyhedra.
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
label: See more items in
content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of Helen M. Wheeler
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MA.304723.370
label: accession number
content: 304723
label: catalog number
content: 304723.370
objectType: label: Object Name
content: Geometric Model
physicalDescription: label: Physical Description
content: plastic (overall material)
label: Physical Description
content: turquoise (overall color)
label: Physical Description
content: black (overall color)
label: Physical Description
content: blue (overall color)
label: Physical Description
content: cut and glued (overall production method/technique)
label: Measurements
content: average spatial: 10.3 cm x 10.6 cm x 10.6 cm; 4 1/16 in x 4 3/16 in x 4 3/16 in