Forensic Science: A Very Short Introduction (Very Short by Jim Fraser

By Jim Fraser

As a result of its connections to violent crime and creative detective paintings, forensic technology is a topic of never-ending fascination to most of the people. A legal case can usually hinge on a bit of proof comparable to a hair, a blood hint, a bit saliva on a cigarette butt, or the telltale mark of a tire tread. excessive profile situations have stoked this curiosity in recent times and a few of the most well-liked indicates on television--such as CSI: Crime Scene research and its raft of spin-offs--attest to the iconic acclaim for forensic technological know-how as a kind of grisly leisure. This Very brief creation appears to be like on the nature of forensic technology, analyzing what forensic technological know-how is, the way it is utilized in the research of crime, how crime scenes are controlled, how forensic scientists paintings, the several concepts used to recuperate proof, and the diversity of equipment to be had for research. It additionally considers how forensic technology serves the felony justice process and the demanding situations of speaking complicated medical proof in a courtroom of law.

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This no-nonsense advisor is an admirable replacement to the CSI technological know-how fiction juggernaught. Jim Fraser discusses specialist proof, DNA, fingerprints and affirmation bias, pointing out the Birmingham 6 and Sir Roy Meadow, even though now not Shirley McKie's shameful persecution at the foundation of supposedly infallible fingerprint proof. interesting. William Darragh, Fortean instances juggernaut...Fascinating.

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Interpreting these patterns in light of other information or evidence available can assist in reconstructing events at the crime scene Indicates contact between a bloodstained item and another surface. Drip Free-falling blood droplets. In a linear pattern usually indicate movement (a trail). Impact A radial pattern of predominantly minute stains (around 1 millimetre) caused by force dispersing the blood. Generally correlated with violence. Arterial A distinctive pattern caused by blood escaping from a damaged artery, Cast off (in-line) A linear pattern of stains caused by blood being thrown from a moving object, typically a weapon such as a hammer in crimes of violence.

The case file will subsequently be used as the basis for drafting reports and to act as an aide-memoire when giving evidence in court. It should also be a transparent record of how the item was examined, by whom, for what purpose, at what time, and in what sequence. All of these matters are of potential interest during a trial. Blood and body fluids In physical and sexual assaults, body fluids can be shed and transferred to clothing, objects, and weapons. In addition to identifying the source, that is the individual from whom the stain has come, the location, amount, and pattern of staining can be important in interpreting findings.

How to calculate the angle of impact and estimate the area of origin of bloodstains is illustrated in Figure 4. There are also a number of recognizable blood stain patterns which arise from specific events and can readily be identified. These are outlined in Table 5. Not all patterns are readily identifiable, and some patterns are fragmentary and difficult to interpret. The best patterns are usually found on smooth surfaces on stable or immovable light-coloured objects such as walls or heavy furniture.

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