the crime scene. 4. What is the role of the forensic chemist in crime scene investigation? - Forensic chemists analyze all chemical‚ inorganic and organic aspects of a sample. They separate the components and identify them using a variety of tests and devices. The findings will be used to help solve the crime and as evidence in court. 5. Who helped pioneer forensic chemistry? Describe one of her famous cases. - France McGill was a pioneer of forensic chemistry. One of her famous cases involved an
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of this job is looking for evidence. There are different types of evidence. Some can be seen with an unaided eye and some can’t. Trace evidence cannot be seen with an unaided eye. Every person who is physically involved with a crime leaves some kind of trace evidence such as hair‚ fibers‚ and even have gunshot residue left on the perpetrators hands. It is even possible to obtain a confession from the suspect . In the OJ Simpson case‚ there was a lot of trace evidence. Some of it led to suspicion
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Trace evidence is based on Locard’s exchange principle which contends that every contact no matter how slight will leave a trace . The trace is normally caused by objects or substances contacting one another‚ and leaving a small sample on the contact surfaces. Foreign objects or pieces of material present at a crime scene and tracing its origin can assist in an arrest and conviction the same way finding some trace from the victim or crime scene on a suspect can have a strong impact on a case. Trace
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does each occur? there are loops which 60 through 65% of people have in the population. Whorls only 30 to 35% of people have this particular print ‚ and arches and only about 5% have this particular fingerprint. 2. What is a medulla? What do forensic scientists use this for? it cells that run through the hair. they use it for showing if chemicals have been in the hair such as bleaching or dying and to look at the shape and pigment of the hair. 3. What is a precipitin test? What is it used
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There are 5 steps to the physical evidence process. Step 1 of the physical process is to respond to the crime. Police officers will need to secure the crime scene and set up communication with other officers and investigators to establish a plan of action. These same officers and investigators must be able to communicate with witnesses at the crime scene. To accomplish this goal‚ the police on the scene must establish what has happened‚ was a crime committed‚ and if a crime was committed how
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Gathering Evidence from the Crime Scene Task 1 Shaking – Shake items and allow the particles to fall into a large container or sheet of paper. This technique is suitable for recovering trace evidence: glass fragments‚ paint chips‚ hairs and fibres. Brushing – Brush the surface with a clean brush and collect the material in a container or piece of paper. This is necessary when shaking does not dislodge the particles. This technique is suitable for removing trapped particles from surfaces:
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learned many things‚ and conducted different experiments to help us understand what may have happened to Anna‚ and how she died. In this paper‚ you will read about what we learned‚ our theories about her death‚ and the evidence that helped us create our theories. The first piece of evidence we looked at was the fingerprints. We had prints from the victim‚ as well as other fingerprints‚ presumably from the culprit or culprits. We examined the different patterns‚ and identifying marks that can be used to
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Spectral evidence‚ as defined by the State vs. Dustin court case‚refers to “a witness testimony that the accused person’s spirit or spectral shape appeared to him/her witness in a dream at the time the accused person’s physical body was at another location”. The legal definition of the general term evidence is “information given personally‚ drawn from a document‚ or in the form of material objects‚ tending or used to establish facts in a legal investigation or admissible as testimony in court”. Spectral
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ADMISSIBILITY OF THE OPINION OF A COMPUTER FORENSICS EXAMINER AS AN EXPERT EVIDENCE UNDER NIGERIAN LAW OF EVIDENCE By Philip O Nwachukwu As a general rule under Nigerian law of Evidence‚ the opinion evidence is irrelevant in court trials. Thus section 66 of the Evidence Act CAP E14‚ Laws of the. Federation of Nigeria (LFN)‚ 2004 provides that the fact that any person is of the opinion that a fact in issue‚ or relevant to the issue‚ does or does not exist‚ is irrelevant to the existence of such fact
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Table of Contents Abstract 3 Digital forensics 4 Network forensics 4 Anti-forensics Techniques 7 Mobile Device Forensics 9 File Carving 10 Conclusion 12 Bibliography 13 Abstract Digital forensics is an emerging discipline that focuses on the acquisition‚ recovery‚ documentation‚ and analysis of information contained within and created with computer systems. These methods and methodologies are used typically to figure out what happened‚ when it happened‚ how it happened‚ and
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