Forensic Examination of Glass and Paint: Analysis and by Brian Caddy

By Brian Caddy

This quantity represents an method of the research of glass and paint as they ensue as hint proof in forensic circumstances. every one bankruptcy is written through knowledgeable of their specific zone. The booklet is split into sections: one pertaining to paint and one touching on glass. each one part covers an creation to the composition of those fabrics and the analytical method of acquiring details from a majority of these indicates, including an interpretation of that proof within the context of the forensic circumstances.

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Additional info for Forensic Examination of Glass and Paint: Analysis and Interpretation (Taylor & Francis Forensic Science Series)

Sample text

One reason that trace evidence is not utilised more frequently is that it is harder for the lay person to understand the complex interrelationships that are typical of the context in which it occurs than to understand such things as DNA typing of bloodstains. In laboratories where submissions are based solely on assessments by nonscientists, potentially valuable evidence may not be recognised and submitted. Another reason that may explain the apparent lack of appreciation of trace evidence is that the © 2001 Brian Caddy advent of DNA typing technology has led to unrealistic expectations with respect to the generation of numbers related to discrimination potential when other kinds of evidence are encountered.

This kind of lay understanding of the potential with respect to other more general and complex trace evidence problems is more difficult to convey. Despite the potential, the relative obscurity of trace evidence as it relates to the process of case solutions makes it difficult to obtain the funding necessary to carry out the research and development. The minuscule amounts of material that typically comprise transferred trace evidence raise concerns about possible contamination. We can anticipate that protective clothing will be more widely seen to be necessary and will be required at crime scenes both for the protection of personnel and to minimise contamination of the scene.

Float glass fragments can be recognised readily in the field during forensic investigations by using a hand-held short-wave ultraviolet (UV) lamp. The surface that was in contact with the molten tin during manufacture fluoresces. Tempered or toughened glass has properties that are of particular interest with respect to trace evidence. Briefly, after this glass is formed into its final shape, typically a sheet, it is heated to a temperature in the vicinity of what is known as its annealing temperature.

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