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Turned Armilla
c. 1500 BCE
The Cleveland Museum of Art
Cleveland, United States
Europe. As the spiral mimics forms found in nature - specifically in nautilus shells - it is the basis for logarithmic measures of progression in measurement and growth, which in turn help establish the Fibonacci sequence. Through this sequence we can analyze the phenomenon of spiral designs, specifically in nautilus shells, where the radius of each new chamber grows at a rate determined by a specific proportion to the previous one.
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Details
- Title: Turned Armilla
- Date Created: c. 1500 BCE
- Physical Dimensions: Overall: 12.5 x 10.4 cm (4 15/16 x 4 1/8 in.)
- Provenance: Count Keglevics; Dr. S. Egger, Vienna, sold Sotheby, 1891; Pitt Rivers; (Michael Ward, New York).
- Type: Metalwork
- Rights: CC0
- External Link: https://clevelandart.org/art/1988.5
- Medium: bronze, wrought
- Fun Fact: This armilla or arm ornament has a ridge along the spine, ending in a spiral at both ends.
- Department: Greek and Roman Art
- Culture: Hungary, Bronze Age
- Credit Line: Purchase from the J. H. Wade Fund
- Collection: GR - European Bronze Age
- Accession Number: 1988.5
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