Geometric Model by A. Harry Wheeler, One-Sided Polyhedron
name: label: maker
content: Wheeler, Albert Harry
notes: label: Description
content: This model might be seen aas three four-sided oblique pyramids, joined to form a three-legged model. Each pyramid has two black and one tourquois side. The tree bases are also turquoise. However, in this particular version of the model. two black faces of adjacent pyramids are in the same plane. Hence they contribute three, not six, faces to the model. Moreover, The base of a pyramid is in the same plane as two of the turquoise faces of other puramids. Hence the turquise pieces contribute three other faces, for a total of six faces. Wheeler also computes that the model has six vertices and twelve edges. This gives an Euler characteristic of 0, which characterizes a one-sided polyhedron.
label: Description
content: A tag on the object reads: M 11. A mark reads: 652 (/) e=6 (/) k=12 (/) f=6 e-k+f=0.
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.304723.368
label: accession number
content: 304723
label: catalog number
content: 304723.368
objectType: label: Object Name
content: Geometric Model
label: Other Terms
content: Geometric Model; One-Sided Polyhedron
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: cut and glued (overall production method/technique)
label: Measurements
content: average spatial: 8.5 cm x 12.6 cm x 11.5 cm; 3 11/32 in x 4 31/32 in x 4 17/32 in