Examination and sampling methods of sampling

목차

Introduction

Part I

Part II

Part III

Conclusion

본문내용

nd decorative steps as well as the extent and history of restoration. The steadier view, wide range of magnification with a camera attachment allow to catch features overlay other features, variations in pigment types and colour, flow lines in the glaze, pores in the body. For example, use of the 'Stereo Zoom Trinocular Microscope' with a magnification range (10~ 80_) and a third eyepiece for camera attachment will be a extremely useful method of documenting unusual and interesting features such as turning marks, joints, glaze defects build up, and brush strokes (Buys and Oakley, 1993)
2) Sampling requirements
If it is impossible to take a sample from object we want to analysis, a broken piece of similar ware, from same site, same time period and same characteristics and decoration is helpful. (Kingery and Vandiver, 1986) Such a sample from a part of unseen in ceramic, for example, the inside or a damaged area, rim or base, is non-destructive. It could be filled with plaster or may be left as evidence that an analysis exist as part of the history of the object. It was understood that there has been absolutely no aesthetic alteration, serviceability, or future study of the piece even though it would be clearly intrusive. (Buys and Oakley, 1993) The use of shards is potential for the greater amount of information, which is immediately accessible. It is extremely important that shard must be cleaned of contamination on surfaces and edges. The size of sample also needs to be considered. With too small a sample, more likely to miss many interesting point of research, thus, running the risk of being completely unrepresentative. Because ceramic ware are often variable in their structure and composition. It is, thus, advisable to sample the sherds in more than one part to get a more representative, and to obtain a larger quantity than is actually required by the technique. (Rice, 1987) For microsamples, less than a millimetre of glaze or body can be removed with a diamond point, a sharp scalp, or an abrasive. In case of macrosamples can be done by taking a small cylindrical core sample of 3mm diameter and depth with water-cooled diamond core drill. (Buys and Oakley, 1993)
3) Analytic technique that available for further examination
The understanding of ceramic is of great benefit to the archaeologist. All information such as the nature of ceramic materials and process, the methods of village potters help to understand the life of our past. An application of the principles and evaluation of analysis complemented by the specialised training will lead to a reliable result. Furthermore, the archaeologist can learn from various fields of physical science. However, to use board helpful methods described below, the archaeologists should define their function clearly which classes of methods gives the best promise of result, then choose critically. (Shepard.1995)
(1) Electron Microscopy: This technique offers the great range of resolution and magnification

키워드

Ceramics,   sampling,   sampling,   conservation,   examination,   analysis