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Geometric Model, L. Brill No. 42. Ser. 7 No. 13, Third Order Surface

Geometric Model, L. Brill No. 42. Ser. 7 No. 13, Third Order Surface

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Description
This white plaster model of a third order surface has a square base and two segments that arch toward one another at the top. A red line is indicated from the place where the segments meet toward the bottom of the model. There are no labels.
Brill's catalog indicates that model 41 (series 7, No. 12 - 1985.0112.032) is the real part of the surface and model 42 (Series 7, No. 13 - 1985.0112.033) is the imaginary part.
This model, along with all the models of Series 7, is on the design of Carl Rodenberg of the technical high school in Munich.. It was first published by Brill in 1881.
The object was exhibited at the German Educational Exhibit at the Columbian Exposition, a World’s Fair held in Chicago in 1893. It there was purchased by Wesleyan University in Connecticut, and subsequently was donated to the Smithsonian.
References:
L. Brill, Catalog mathematischer Modelle..., Darmstadt: L. Brill,1892, p.14, 61.
Accession file.
G. Fischer, Mathematical Models, Braunschweig: Vieweg, 1986, vol. 1, p. 23, vol. 2, pp. 12-14. This object is presently missing a tips on the points, compared to the example shown in Fischer's photograph.
Location
Currently not on view
Object Name
geometric model
date made
1892
maker
L. Brill
place made
Germany: Hesse, Darmstadt
Physical Description
plaster (overall material)
Measurements
overall: 15 cm x 12.6 cm x 12.6 cm; 5 29/32 in x 4 31/32 in x 4 31/32 in
ID Number
1985.0112.033
catalog number
1985.0112.033
accession number
1985.0112
Credit Line
Gift of Wesleyan University
subject
Mathematics
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Data Source
National Museum of American History
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