Model of the Locus of Spherical Curvature of a Screw by Richard P. Baker, Baker #134 (a Ruled Surface)
date: label: date made
content: ca 1906-1935
name: label: maker
content: Baker, Richard P.
notes: label: Description
content: This string model was constructed by Richard P. Baker after he joined the mathematics faculty at the University of Iowa in 1905. Baker believed that models were essential for the teaching of many parts of mathematics and physics, and over one hundred of his models are in the museum collections.
label: Description
content: The typed part of a paper label on the top of the wooden base of this model reads: No. 134 (/) Screw: locus of spherical (/) curvature. Model 134 is listed in Baker’s 1931 catalog as a model for differential geometry with the title shown. No dimensions are given.
label: Description
content: The planes, line segments, cone, cylinder and helix shown in this model are identical to those of Baker’s model 89 (MA.211257.012), although the color of the thread is different.
label: Description
content: The model reportedly sold for $5.00.
label: Description
content: References:
label: Description
content: R. P. Baker, <I>Mathematical Models</I>, Iowa City, Iowa, 1931, p. 11.
label: Description
content: R. P. Baker Papers, University of Iowa, Iowa City, Iowa.
label: Location
content: Currently not on view
place: label: place made
content: Iraq
label: place made
content: United States: Iowa, Iowa
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.211257.021
label: accession number
content: 211257
label: catalog number
content: 211257.021
objectType: label: Object Name
content: geometric model
physicalDescription: label: Physical Description
content: thread (overall material)
label: Physical Description
content: wood (overall material)
label: Physical Description
content: metal (overall material)
label: Physical Description
content: black (overall color)
label: Physical Description
content: red (overall color)
label: Physical Description
content: yellow (overall color)
label: Physical Description
content: blue (overall color)
label: Physical Description
content: screwed, soldered & threaded (overall production method/technique)
label: Measurements
content: average spatial: 13.4 cm x 26 cm x 18.4 cm; 5 9/32 in x 10 1/4 in x 7 1/4 in