Object Details
- 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.
- Location
- Currently not on view
- Data Source
- National Museum of American History
- maker
- L. Brill
- date made
- 1889
- Credit Line
- Gift of the Department of Mathematics, The University of Michigan
- 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
- Object Name
- Geometric Model
