Jay Hambidge

"At the Tomb of Omar Khayyam", by Jay Hambidge.

Jay Hambidge (1867–1924) was an American artist, born in Canada. He was a pupil at the Art Students' League in New York and of William Chase, and a thorough student of classical art. He conceived the idea that the study of arithmetic with the aid of geometrical designs was the foundation of the proportion and symmetry in Greek architecture, sculpture, and ceramics.^{[citation needed]} Careful examination and measurements of classical buildings in Greece, among them the Parthenon, the temple of Apollo at Bassæ, of Zeus at Olympia and Athenæ at Ægina, prompted him to formulate the theory of "dynamic symmetry"^{[citation needed]} as demonstrated in his works Dynamic Symmetry: The Greek Vase (1920) and The Elements of Dynamic Symmetry (1926). It created a great deal of discussion,^{[citation needed]} an English critic saying that Hambidge did not try to formulate a new theory, but to recover a lost technique.^{[citation needed]} He found a disciple in Dr. Lacey D. Caskey, the author of Geometry of Greek Vases (1922).

Dynamic symmetry

Dynamic symmetry is a proportioning system and natural design methodology described in Hambidge's books. The system uses dynamic rectangles, including root rectangles based on ratios such as √2, √3, √5, the golden ratio (φ = 1.618...), its square root (√φ = 1.272...), and its square (φ² = 2.618....), and the silver ratio (δ_s = 2.414...).^[1][2]

From the study of phyllotaxis and the related Fibonacci sequence (1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, ...), Hambidge says that "a much closer representation would be obtained by a substitute series such as 118, 191, 309, 500, 809, 1309, 2118, 3427, 5545, 8972, 14517, etc. One term of this series divided into the other equals 1.6180, which is the ratio needed to explain the plant design system."^[3] This substitute sequence is a generalization of the Fibonacci sequence that chooses 118 and 191 as the beginning numbers to generate the rest. In fact, the standard Fibonacci sequence provides the best possible rational approximations to the golden ratio for numbers of a given size.

References

1. ^ Jay Hambidge (2003) [1920]. Dynamic Symmetry: The Greek Vase (Reprint of original Yale University Press edition ed.). Whitefish, MT: Kessinger Publishing. pp. 19–29. ISBN 0-7661-7679-7. 
2. ^ Matila Ghyka (1977). The Geometry of Art and Life. Courier Dover Publications. pp. 126–127. 
3. ^ Hambidge (1920) p. 159; note that his cited ratio 1.6180 is exact only for the pair 500, 809.

External links

• Hambidge Center for Creative Arts and Sciences
• This article incorporates text from an edition of the New International Encyclopedia that is in the public domain.

Persondata
Name	Hambidge, Jay
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Date of birth	1867
Place of birth
Date of death	1924
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