Model of a Double Cone and a Hyperbola of One Sheet in Contact by Richard P. Baker, Baker #505 (a Ruled Surface)
Model of a Double Cone and a Hyperbola of One Sheet in Contact by Richard P. Baker, Baker #505 (a Ruled Surface)
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- Description
- This geometric model was constructed by Richard P. Baker in the early twentieth century when he was Associate Professor of Mathematics at 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.
- The typed part of a paper label on the wooden base reads: No. 505 (/) SIMPLE CONTACT; ROOTS 2, 1. The model has a wooden frame painted black and two metal supports. The yellow threads join two elliptical rings of holes, one at the top and one at the bottom. The red strings join two straight lines of holes, one on the top and one on the bottom. In both cases, the threads are twisted but do not all meet at a point.at the center.
- This was the second of five models Wheeler designed of “cones with a common vertex.” Four of these are in the Smithsonian collections. They are Wheeler’s numbers 504 (MA.211257.098), 505 (MA.211257.099), 507 (MA.211257.100), and 508 MA.211257.101).
- Reference:
- Richard P. Baker, “Mathematical Models,” Iowa City, Iowa, January, 1931, p. 10.
- 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)
- red (overall color)
- black (overall color)
- yellow (overall color)
- blue (overall color)
- screwed, bolted & threaded. (overall production method/technique)
- Measurements
- average spatial: 22.6 cm x 25 cm x 25.4 cm; 8 29/32 in x 9 27/32 in x 10 in
- average spatial: 22.6 cm x 25 cm x 25.4 cm; 8 7/8 in x 9 13/16 in x 10 in
- ID Number
- MA.211257.099
- accession number
- 211257
- catalog number
- 211257.099
- 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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