Object Details
- Description
- This wooden model of a regular tetrahedron has four equilateral triangles for sides.
- The model is part of a series of models sold by J. Schroeder of Darmstadt. The identity of the maker has been deduced from the similarity of the numbers stamped on models 1982.0795.39, 1982.0795.40, and 1982.0795.41 through 1982.0795.44 with the numbers of the Schroeder models of simple solids listed in the Johns Hopkins University Circular for January, 1885, p. 36. This list includes 41 wood models of simple solids and 10 wood models of quadric surfaces, and states that all were made by Schroeder. It also notes that Schroeder's agent in the U.S. was James W. Queen Company of Philadelphia. An 1884 catalog of Queen Company indicates that they sold three sets of Schroeder models of "simple solids", one with twelve pieces, one with forty pieces, and the third with 118 pieces. J. Schroeder was in business in Darmstadt from at least 1844 until at least 1893.
- Location
- Currently not on view
- Data Source
- National Museum of American History
- date made
- ca 1889
- Credit Line
- Gift of the Department of Mathematics, The University of Michigan
- Physical Description
- wood (overall material)
- Measurements
- overall: 6 cm x 7.7 cm x 7 cm; 2 3/8 in x 3 1/32 in x 2 3/4 in
- Object Name
- Geometric Model
