Ruled Surface by Richard P. Baker, Surface with Two Tangent Lines

Ruled Surface by Richard P. Baker, Surface with Two Tangent Lines

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This ruled surface has a wooden frame painted black. It has a curved top and bottom and three shaped sides (only one of these is strictly vertical). The surface is ruled in yellow threads. Two tangent lines, one in pink and one in blue, stretch from top to bottom, both lying entirely on the surface.
The model has no maker's marks, but the style is that of Richard P. Baker of the University of Iowa.
Currently not on view
Object Name
geometric model
geometric model
geometric model
date made
ca 1906-1935
Richard P. Baker
place made
United States: Iowa
Physical Description
wood (overall material)
thread (overall material)
overall: 42.5 cm x 43 cm x 41.5 cm; 16 23/32 in x 16 15/16 in x 16 11/32 in
ID Number
catalog number
accession number
Credit Line
Gift of Brown University Department of Mathematics
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Data Source
National Museum of American History
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