Object Details
maker
Richard P. Baker
Description
This ruled surface has a wooden frame painted black. The top and bottom are roughly in the shape of an H with curved sides. Two sides are like one another. The model is strung to represent one hyperboloid of one sheet in blue threads and another in yellow threads. The two hyperboloids do not intersect nor are they twisted. Their axes are perpendicular (but not in the same plane). The model has holes on the top and bottom pieces to hold the ends of a vertical line, but there is no vertical line. The model has no maker's marks, but the style is that of Richard P. Baker of the University of Iowa.
Compare MA.211257.124 (another Baker model) and MA.304722.33. A Brill model with number 1985.0112.132 and a Baker model with number MA.211257.128 are similar but the ruled surfaces have been twisted and there is a vertical line at the center of both.
Location
Currently not on view
Credit Line
Gift of Brown University Department of Mathematics
ID Number
MA.304722.33
catalog number
304722.33
accession number
304722
Object Name
geometric model
geometric model
Physical Description
wood (overall material)
thread (overall material)
Measurements
overall: 36 cm x 35.7 cm x 35.7 cm; 14 3/16 in x 14 1/16 in x 14 1/16 in
place made
United States: Iowa
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Data Source
National Museum of American History
Subject
Mathematics
Link to Original Record
Record ID
nmah_1213868