Model of the Developable of Normals along Lines of Curvature of a Scroll, by Richard P. Baker, Baker #144 (a Ruled Surface)

Model of the Developable of Normals along Lines of Curvature of a Scroll, by Richard P. Baker, Baker #144 (a Ruled Surface)

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Description
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.
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.
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.
Reference:
R. P. Baker, Mathematical Models, Iowa City, Iowa, 1931, p. 12.
Location
Currently not on view
Object Name
geometric model
date made
ca 1906-1935
maker
Baker, Richard P.
Physical Description
thread (overall material)
wood (overall material)
metal (overall material)
black (overall color)
yellow (overall color)
red (overall color)
blue (overall color)
screwed and threaded (overall production method/technique)
Measurements
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
ID Number
MA.211257.027
accession number
211257
catalog number
211257.027
Credit Line
Gift of Frances E. Baker
subject
Mathematics
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Data Source
National Museum of American History
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