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There is some common ground between forensic science and forensic engineering, such as scene of crime and scene of accident analysis, integrity of the evidence and court appearances. Both disciplines make extensive use of optical and scanning electron microscopes , for example.
The most common use of fiber analysis is microscopic examination of both longitudinal and cross sectional samples. While this is the most common method of undertaking fiber analysis, others do exist. These include the burning and solubility methods.
Trace evidence is found in many different forms with some examples including, but not limited, to fire debris, gunshot residue, glass fragments, and fibres. [2] Each of these types of evidence will have a trained analyst in that specific field who will conduct the analysis on these items.
In addition to their laboratory role, forensic scientists testify as expert witnesses in both criminal and civil cases and can work for either the prosecution or the defense. While any field could technically be forensic, certain sections have developed over time to encompass the majority of forensically related cases. [4]
Forensic chemistry is the application of chemistry and its subfield, forensic toxicology, in a legal setting. A forensic chemist can assist in the identification of unknown materials found at a crime scene. [1] Specialists in this field have a wide array of methods and instruments to help identify unknown substances.
The corresponding pressures achieved are p 0 >>p 1 >>p 2, which is a sufficient condition for a microscope employing a tungsten type of electron gun. Additional pumping stages may be added to achieve an even higher vacuum as required for a LaB 6 and field emission type electron guns. The design and shape of a pressure limiting aperture are ...
Since, ballistic identification has benefited from a long series of structural, scientific and technological advances, law enforcement agencies have established forensic laboratories and researchers have learned much more about how to match bullets and cartridge cases to the guns used to fire them, and comparison microscopes have become more ...
In typical circumstances, evidence is processed in a crime lab. Forensic ballistics – methods of investigating the use of firearms and ammunition, and application of ballistics to legal questions. Ballistic fingerprinting – forensic techniques that rely on marks that firearms leave on bullets to match a bullet to the gun it was fired with. [6]
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