In cases of marine or fresh water finds the most important factors of decay are the amount and composition of soluble salts, water depth, amount of dissolved gases, the direction of water currents and the role of both microscopic and macroscopic living organisms. As the most influential factors of deterioration of historical objects should be pointed out as the relative humidity and air pollution while in archaeological objects a crucial role has composition, depth, humidity and amount of gasses in the soil. Also available are free PDF, EPUB, and Kindle/MOBI downloads of the book.Rust and dirt on metal as a result of corrosion and pollution.Īn essential cause of deterioration is corrosion of metal objects or object deterioration by interaction with the environment. The free online edition of this open-access book is available at and includes zoomable figures and tables. How does this scholarship bear on the understanding of bronzes within the wider history of ancient art? How do these technical data relate to our ideas of styles and development? How has the material itself affected ancient and modern perceptions of form, value, and status of works of art? Most recently, the restoration history of bronzes has established itself as a distinct area of investigation. Analytical work of materials, processes, and techniques has significantly enriched our understanding of the medium. The study of large-scale ancient bronzes has long focused on aspects of technology and production. The papers in this volume derive from the proceedings of the nineteenth International Bronze Congress, held at the Getty Center and Villa in October 2015 in connection with the exhibition Power and Pathos: Bronze Sculpture of the Hellenistic World.
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