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Glass As Forensic Evidence

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Running Head: GRASS AS FORENSIC EVIDENCE 1

Glass as Forensic Evidence

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GLASS AS FORENSIC EVIDENCE 2

Glass as Forensic Evidence

Because of its brittleness, glass can break quickly thus making it an essential material

used as forensic evidence. Glass fragments from a crime scene or accident scene can be carried

and classified through analytical methods and procedures to give a clue about the crime (Rast,

2006).The way in which the glass is broken can help in determining the type of crime. The types

of breakage range, for example, a percussion cone breakage can indicate that a bullet shattered

the glass .Glass can, therefore, be analyzed through ways such as considering its breakage

pattern, its density, thickness, refractive index, element composition and color (Rast, 2006).

Glass evidence is analyzed depending on values such as the sequence of fractures, The

direction of the force that caused the fracture and the identity of the pieces collected (Curran,

Champod, & Buckleton, 2000).The type of glass broken and type of crime can also determine the

size of the fragments that are most likely to be transferred from a crime scene or accident scene.

For example, hit and run accident incidents are more likely to produce sizeable tempered glass

fragments scattered at the point of impact (Curran, Champod, & Buckleton, 2000).

In glass forensics, two or more glass fragments are compared to identify whether they

came from different sources. Different glass fragments can only be associated with each other

after matching each other (“Review Article - Forensic Glass Comparison,” n.d.)Comparative

glass analysis is mainly done to reduce the number of possible sources thus there is no need for

further comparison when a difference is evident. Mostly, not all the recovered and transferred

glass fragments show every feature required so if the fragment lacks a feature, the comparison

specimen should not be assessed for that feature. For example, it would be pointless to measure a

fragment’s thickness if the comparison specimen does not have the original surface (“Review

Article - Forensic Glass Comparison,” n.d.).

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Running Head: GRASS AS FORENSIC EVIDENCE Glass as Forensic Evidence Students Name University Affiliation 1 GLASS AS FORENSIC EVIDENCE 2 Glass as Forensic Evidence Because of its brittleness, glass can break quickly thus making it an essential material used as forensic evidence. Glass fragments from a crime scene or accident scene can be carried and classified through analytical methods and procedures to give a clue about the crime (Rast, 2006).The way in which the glass is broken can help in determining the type of crime. The types of breakage range, for example, a percussion cone breakage can indicate that a bullet shattered the glass .Glass can, therefore, be analyzed through ways such as considering its breakage pattern, its density, thickness, refractive index, element composition and color (Rast, 2006). Glass evidence is analyzed depending on values such as the sequence of fractures, The direction of the force that caused the fracture and the identity of the pieces collected (Curran, Champod, & Buckleton, 2000).The type of glass broken and type of crime can also determine the size of the fragments that are most likely to be transferred from a crime scene or accident scene. For example, hit and run accident incidents are more likely to produce sizeable tempered glass fragments scattered at the point of impact (Curran, Champod, & Buckleton, 2000). In glass forensics, two or more glass fragments are compared to identify whether they came from different sources. Differ ...
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