Object Details
- Description
- This is a white plaster model of an octant of a Fresnel wave surface for refraction in a biaxial crystal. It appears to be bounded by part of a sphere on the outside and part of an ellipsoid on the inside. It has no tags. A grid of lines is indicated on both the inside and the outside. A paper tag on the model reads: Fresnel'sche Wellenfläche. mit [. . .] (/) Verl. v. L. Brill. [. . .].
- It is one of two models in Brill’s Series 6, No. 4 (and later M. Schilling). These are Brill's model 162 (and would be Schilling's model 360).
- Compare 1982.0795.19, as well as the mirror image of that model, 1982.0795.18. These form the complete Series 6, No. 4.
- The model is part of a series designed under the direction of Alexander Brill at the technical high school in Munich and first published in Darmstadt in 1880. This example was exhibited at the Columbian Exposition, a World’s Fair held in Chicago in 1893.
- References:
- L. Brill, Catalog, 1892, p. 13, 87.
- Francis A. Jenkins and Harvey E. White, Fundamentals of Optics, New York: McGraw Hill, 1976, pp. 553-555.
- Location
- Currently not on view
- Data Source
- National Museum of American History
- maker
- L. Brill
- date made
- 1892
- Credit Line
- Gift of Wesleyan University
- Physical Description
- plaster (overall material)
- Measurements
- overall: 12 cm x 12.5 cm x 8.5 cm; 4 23/32 in x 4 29/32 in x 3 11/32 in
- Object Name
- Geometric Model
- geometric model
