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Krisztina Fehér, Brigitta Szilágyi and Balázs Halmos

Abstract

The construction of the regular pentagon has always meant a difficult geometrical exercise for architects during the Middle Ages. As the correct drafting was forgotten after the Antiquity, several methods for its approximation had been invented in medieval times. As Golden Ratio appears between several parts of the regular pentagon, the role of the Fibonacci sequence in these approximate constructions is to be examined. The pentagonal drawing in the sketchbook of Villard de Honnecourt calls our attention to a possible way how medieval architects could have applied simple numerical ratios for getting angles they needed. The approximation of 72°, for instance, is likely to have been crucial for this pentagonal construction, as well as the approximation of Golden Ratio that could have been achieved by neighbouring pairs from Fibonacci’s sequence.

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Ana-Maria Budu, Ion Sandu and Raluca Anamaria Cristache

Conservation of Panel Paintings. Proceedings of a Symposium at the J. Paul Getty Museum. Véliz, Z., (1995) Wooden Panels and Their Preparation for Painting from the Middle Ages to the Seventeenth Century in Spain, The Structural Conservation of Panel Paintings. Proceedings of a Symposium at the J. Paul Getty Museum Wadum, J., (1995) Historical overview of Panel-Making Techniques in the Northern Countries, The Structural Conservation of Panel Paintings. Proceedings of a Symposium at the J. Paul Getty Museum. The Wood Database