Model by Richard P. Baker, Dual of Model 438, Baker #438a
date: label: date made
content: ca 1906-1935
name: label: maker
content: Baker, Richard P.
notes: label: Description
content: This geometric model was constructed by Richard P. Baker in the early twentieth century when he was Associate Professor of Mathematics at the University of Iowa. Baker believed that models were essential for the teaching of many parts of mathematics and physics, and over 100 of his models are in the museum collections.
label: Description
content: This painted wire structure includes six directional arrows. It has a paper tag that reads: No. 438* (/) Dual of 438. Although the inscription denotes the model as 438*, Baker's catalog lists it as 438a.
label: Description
content: Baker built nine models to correspond to figures described by the German mathematician Eduard Study in his book on the geometry of dynamics (in his catalog, Baker shortened the title to Dynamen). Examples with numbers MA.211257.089 and MA.211257.090 (this one) relate to finding the sum of spherical wedges.
label: Description
content: References:
label: Description
content: Study, E., <I>Geometrie Der Dynamen: Die Zusammensetzung Von Kräften Und Verwandte Gegenstände Der Geometrie Bearb.</I>, Leipzig: B.G. Teubner, 1903, esp. pp. 34-35.
label: Description
content: Baker,R.P., <I>Mathematical Models</I>, Iowa City, 1931, p. 16.
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.211257.090
label: accession number
content: 211257
label: catalog number
content: 211257.090
objectType: label: Object Name
content: geometric model
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: beige (overall color)
label: Physical Description
content: soldered. (overall production method/technique)
label: Measurements
content: average spatial: 10.6 cm x 19.1 cm x 10.2 cm; 4 3/16 in x 7 17/32 in x 4 1/32 in