Geometric Model, M. Schilling No. 22 or L. Brill No. 192. Ser. 16 No. 5, Hyperboloid of Two Sheets

Geometric Model, M. Schilling No. 22 or L. Brill No. 192. Ser. 16 No. 5, Hyperboloid of Two Sheets

<< >>
Usage conditions apply
Downloads
Description
In 1888, Ludwig Brill of Darmstadt published a series of nine models for teaching about surfaces of the second degree that have the same foci (confocal surfaces). The plaster models were patterned after some designed by the Finnish mathematician Edvard Rudolf Neovius (1851-1917) of Helsinki. This, the fifth in the series, represents a hyperbola of two sheets. It has the same foci as the ellipsoid that first model in the series and the hyperbola of one sheets that is the fourth model (for it, see 1985.0112.148). The series was continued by Martin Schilling.
The model has no tags. A mark carved in the top reads: MICHIGAN.
Compare 1985.0112.149.
References:
L. Brill, Catalog mathematischer Modelle..., Darmstadt: L. Brill,1892, p. 37, 59.
M. Schilling, Catalog, 1911, p. 35, 138.
Location
Currently not on view
Object Name
Geometric Model
date made
1888-1914
place made
Germany
Physical Description
plaster (overall material)
metal (overall material)
Measurements
overall: 21.2 cm x 29.2 cm x 13.3 cm; 8 11/32 in x 11 1/2 in x 5 1/4 in
ID Number
1990.0571.19
catalog number
1990.0571.19
accession number
1990.0571
subject
Mathematics
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Data Source
National Museum of American History
Nominate this object for photography.   

Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.

If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.

Comments

Add a comment about this object