Demonstration Eye with Two Lenses
Demonstration Eye with Two Lenses
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- Description
- This is a papier maché model of an eye on a turned wooden stand. There is a lens at one side of the eye, and a brass sighting tube at the other. Two other lenses, one concave and the other convex, can be placed in front of the lens in the eye, the effect of near and far sighted vision can be seen.
- Gerhardt, a major instrument house in Bonn that began trading as such in 1872, referred to this as an “Optische Augen-Modell.”
- Ref: C. Gerhardt, Preis-Verzeichnis über Physikalische Apparate, Instrumente und Gerätschaften (Bonn, 1893), p. 75.
- Location
- Currently not on view
- Object Name
- demonstration eye
- date made
- late nineteenth century
- maker
- C. Gerhardt
- place made
- Germany: North Rhine-Westphalia, Bonn
- Physical Description
- paper (overall material)
- wood (overall material)
- Measurements
- overall: 19 cm x 10.5 cm x 14 cm; 7 1/2 in x 4 1/8 in x 5 1/2 in
- overall: 7 1/2 in x 4 1/16 in x 5 1/2 in; 19.05 cm x 10.31875 cm x 13.97 cm
- ID Number
- PH.318741
- catalog number
- 318741
- accession number
- 234695
- Credit Line
- Colgate College
- subject
- Science
- See more items in
- Medicine and Science: Physical Sciences
- Data Source
- National Museum of American History
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