Glass Analysis
Annealed Glass |
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A type of glass produced by heat treating and then slowly cooling it down into a form that when broken will produce large, sharp shards.
Annealing |
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The process in which a material is heated to its molten state and then gradually cooled to its solid form.
Glass |
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Forensically defined as a brittle, non-crystalline structure that is usually transparent or translucent, generally formed by the process of melting sand with soda ash and limestone.
Glass Refractive Index Measurement (GRIM)
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An automated oil-immersion method employed to determine the refractive index of glass fragments.
Locard’s Principle
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A principle commonly employed in the field of trace evidence, which states that every contact leaves a trace.
Refractive index
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The ability of a material to change the direction of a ray of light as it transitions to another material.
Tempered glass
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A type of glass produced by heat treating and then quickly cooling it down into a form that has high strength and that breaks into small, relatively harmless fragments.
Thermal history
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The specific method by which an individual piece of glass was heat treated, which can alter its physical properties and the way it fractures.
The ability of a material to change the direction of a ray of light as it transitions to another material.
Forensically defined as a brittle, non-crystalline structure that is usually transparent or translucent, generally formed by the process of melting sand with soda ash and limestone.
