tailieunhanh - LASER SCANNING, THEORY AND APPLICATIONS_2

Ever since the invention of laser by Schawlow and Townes in 1958, various innovative ideas of laser-based applications emerge very year. At the same time, scientists and engineers keep on improving laser's power density, size, and cost which patch up the gap between theories and implementations. More importantly, our everyday life is changed and influenced by lasers even though we may not be fully aware of its existence. | 15 Characterization of Ancient Ceramic Matrices with High Resolution Microscopy Methods S. Mohammadamin Emami1 2 Johannes Volkmar1 and Reinhard Trettin1 1Institut fur Bau- und Werkstoffchemie Universitat Siegen Paul-Bonatz-Str. 9-11 57068 Siegen 2Art Unversity of Isfahan Departement of Conservation Isfahan Hakim Nezami St. . Box 1744 1Deutschland 2Iran 1. Introduction Potteries ceramics and their production methods in the ancient world are one of the most important items for researching about the cultural heritage materials Riederer 1994 . The processing of material being used for making ceramics and mineralogical investigations for understanding the production process mainly firing are among the most important goals of the present investigations. Scientific studies on archaeological ceramics based on laboratory methods carried out over decades and are known as ceramography All-Saad 2002 . Studying the old objects give not only substantial information about the manufacturing in the past but also provides information about the processing of structures in such primitive materials Letsch Noll 1983 . Recognition of the evolution of ceramics is among the most important questions that has attracted the focus of archaeological researches. Apart from them these ceramics being one of the oldest industries and arts has become nowadays as one of the most modern research sciences for human being. In archaeological researches is also important to know about the procedure of manufacturing in this case ceramics in the daily life of nations Fazeli et al 2001 . Beside archaeological investigations cramography methods are useful and suitable ways for classification ancient ceramics and could help archaeologists to classify them with high accuracy. This investigation resulted in more accurate classification of some ceramics found in Persepolis World Heritage Site and showed high quality manufacturing process which used to make these ceramics Maggetti 1982 . The great consideration

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