Geometric Model, L. Brill No. 158 Ser. 6. No. 3, Wave Surface of a Positive Uniaxial Crystal, D41,8

Geometric Model, L. Brill No. 159 Ser. 10 1. No. 7, Wave Surface for Refraction in a Positive Uniaxial Crystal, D41,8
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Geometric Model, L. Brill No. 159 Ser. 10 1. No. 7, Wave Surface for Refraction in a Positive Uniaxial Crystal, D41,8
Geometric Model, L. Brill No. 159 Ser. 10 1. No. 7, Wave Surface for Refraction in a Positive Uniaxial Crystal, D41,8
Geometric Model, L. Brill No. 159 Ser. 10 1. No. 7, Wave Surface for Refraction in a Positive Uniaxial Crystal, D41,8
Geometric Model, L. Brill No. 159 Ser. 10 1. No. 7, Wave Surface for Refraction in a Positive Uniaxial Crystal, D41,8
Description:

The German label on this white plaster model indicates that it is a model of a wave surface for a positive uniaxial optical crystal, L. Brill Ser. 10.1 No. 7. Such a model always has an outer shell that is a sphere and an inner shell that is an ellipsoid. However, this model is an ellipsoid with one octant cut away to reveal part of a sphere. Thus this is a model of a wave surface of a negative uniaxial crystal whose Brill model is No. 158, Ser. 6, No. 3. The correct label for this model appears on 1982.0795.21.

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

Compare to 1985.0112.124.

References:

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).

Francis A. Jenkins and Harvey E. White, Fundamentals of Optics, New York: McGraw Hill, 1976, p. 553-555.

Date Made: 1889

Maker: L. Brill

Location: Currently not on view

Place Made: Germany

Subject: Mathematics

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

Exhibition:

Exhibition Location:

Credit Line: Gift of the Department of Mathematics, The University of Michigan

Data Source: National Museum of American History

Id Number: 1982.0795.23Catalog Number: 1982.0795.23Accession Number: 1982.0795

Object Name: Geometric Model

Physical Description: plaster (overall material)Measurements: overall: 8 cm x 9 cm x 9 cm; 3 5/32 in x 3 17/32 in x 3 17/32 in

Metadata Usage: CC0

Guid: http://n2t.net/ark:/65665/ng49ca746b3-0c39-704b-e053-15f76fa0b4fa

Record Id: nmah_1213974

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