Model of a Dual of An Archimedean Solid by Richard P. Baker, Baker #547 X
date: label: date made
content: ca 1932
name: label: maker
content: Baker, Richard P.
notes: label: Description
content: This metal model painted white was constructed by Richard P. Baker. A mathematics professor at the University of Iowa, Baker believed that models were essential for instruction in many parts of mathematics and physics. Over one hundred of his models are in the NMAH collections.
label: Description
content: A mark in pencil on the side of the model reads: 314940 131 (/) # 547 X. The model fits in a cardboard box with a label pasted on the lid that reads: No. 547 (/) SPACE DUALS OF (/) ARCHIMEDEAN HALF- REGULAR (/) BODIES No. 465, X, p. 20. A larger label, pasted on the side of the box, reads: Mathematical Models (/) Made by (/) R. P. BAKER (/) No. 547 POLYHEDRON (/) ALL FACES CONGRUENT (/) Dual of Archimedes’ (/) Half-regular body (/) X (3,3,3,n.).
label: Description
content: The semiregular solid to which Baker assigned number 547 X was an antiprism. This model is of the dual of a pentagonal antiprism, known otherwise as a pentagonal bipyramid. The faces are ten kite-shaped quadrilaterals, five arranged around the top vertex and five around the bottom one. The remaining ten vertices, joined together, would form two regular pentagons. Truncating the top and bottom vertices would produce two regular pentagons, while truncating the side vertices gives equilateral triangles..
label: Description
content: References:
label: Description
content: H. M. Cundy and A. P. Rollet, <I>Mathematical Models</I>, Oxford: The Clarendon Press, 1961.
label: Description
content: R. P. Baker, <I>Mathematical Models</I>, Iowa City, Iowa, 1931, p. 20.
label: Location
content: Currently not on view
place: label: place made
content: United States: Iowa, Iowa City
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 Frances E. Baker
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MA.211257.120
label: accession number
content: 211257
label: catalog number
content: 211257.120
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: white (overall color)
label: Physical Description
content: soldered (overall production method/technique)
label: Measurements
content: average spatial: 14.2 cm x 8 cm x 8 cm; 5 19/32 in x 3 5/32 in x 3 5/32 in