Model of the Developable of Normals along Lines of Curvature of a Scroll, by Richard P. Baker, Baker #144 (a Ruled Surface)
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 while he was on the faculty of the University of Iowa. 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: According to the label, this is a model of developable of normals along line of curvature of a scroll (a ruled surface). It has a square wooden base with four corner extensions that connect to each other. Metal screws hold it together. Strings join the extensions and base. A typed paper label on the base reads: No. 144 (/) Normals along lines of (/) curvature of a scroll.
label: Description
content: The tags on model MA.211257.027 and MA.211257.028 both indicate that they are Baker's model 144. The models are not identical.
label: Description
content: Reference:
label: Description
content: R. P. Baker, <I>Mathematical Models</I>, Iowa City, Iowa, 1931, p. 12.
label: Location
content: Currently not on view
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.211257.027
label: accession number
content: 211257
label: catalog number
content: 211257.027
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: yellow (overall color)
label: Physical Description
content: red (overall color)
label: Physical Description
content: blue (overall color)
label: Physical Description
content: screwed and threaded (overall production method/technique)
label: Measurements
content: average spatial: 28.1 cm x 26.1 cm x 26.1 cm; 11 1/16 in x 10 9/32 in x 10 9/32 in