Geometric Model, L. Brill No. 51. Ser. 7 No. 22, Third Order Surface (Cayley's Ruled Surface)


This white plaster model of a third order surface (Cayley's ruled surface) has a square base and a plateau at the top, with a spiral into the center. The lines for the ruled surface are indicated. A paper tag on the model reads: 51.

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.


L. Brill, Catalog mathematischer Modelle. . ., Darmstadt: L. Brill,1892, p.14, 63.

Accession file.

G. Fischer, Mathematical Models, Braunschweig: Vieweg, 1986, vol. 1, p. 33, vol. 2, pp. 12-14.

Date Made: 1892

Maker: L. Brill

Location: Currently not on view

Place Made: Germany: Hesse, Darmstadt

Subject: Mathematics


See more items in: Medicine and Science: Mathematics, Science & Mathematics


Exhibition Location:

Credit Line: Gift of Wesleyan University

Data Source: National Museum of American History

Id Number: 1985.0112.041Catalog Number: 1985.0112.041Accession Number: 1985.0112

Object Name: geometric model

Physical Description: paper (overall material)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


Record Id: nmah_693917

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