Geometric Model, L. Brill No. 158. Ser. 6 No. 3, Wave Surface with Stand


This white plaster model shows a wave surface of a negative uniaxial crystal. It is an ellipsoid, cut away in one quadrant to reveal a portion of a sphere. A paper tag on the model reads: 158. Another tag reads: Wellenfl. für opt. einax. Krystalle. (/) Verl. v. L. Brill. 6. Ser. Nr. 3.

The model rests on a wooden stand painted black. A pencil mark on the bottom of the stand reads: VI.3.

This is one of a series of models designed at the Munich polytechnic high school under the direction of Alexander Brill in 1880.

This particular example of the model was exhibited at the Columbian Exposition, a World’s Fair held in Chicago in 1893.

Compare to 1982.0795.23.


L. Brill, Catalog, 1892, p. 13, 87.

For examples of related models, with a reference to a related publication, see the Goettingen collection of mathematical models, model numbers 283 (Schilling #356) and 284 (Schilling #357).

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: 1985.0112.124Catalog Number: 1985.0112.124Accession Number: 1985.0112

Object Name: Geometric Modelgeometric model

Physical Description: wood (overall material)plaster (overall material)Measurements: overall: 9 cm x 10.4 cm x 10.4 cm; 3 17/32 in x 4 3/32 in x 4 3/32 inmodel without stand: 7.8 cm x 8.5 cm x 8.5 cm; 3 1/16 in x 3 11/32 in x 3 11/32 in


Record Id: nmah_694000

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