WJ. Chisum, B. Turvey. Evidence Dynamics:
WJ. Chisum, B. Turvey. Evidence Dynamics:
In this case study I will examine the forensic evidence (limited to the main ballistic evidence), that was presented in the criminal trials and the forensic evidence that was introduced by the prosecution.…
4. They analyze all chemical, organic, and inorganic aspects of a sample.They also separate the components and identify them using a variety of tests and devices. Their findings are used as evidence by the investigator and in court.…
Evidence is crucial in forensic science because it can help solve crimes and clues in mysteries. We can find out who killed people in order to establish safety or solve crimes such as burglaries. All the evidence we had found played an important role in…
As a Crime Scene Investigator (CSI), there are duties that have to be met and a job that has to get done. Part 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 .…
The role of the forensic chemist in a crime scene investigaton is to analyze all chemicals using a varitey of tests.…
[What functions do the system(s) provide? Where are they on the network? What do the systems have access to?]…
A couple of advantages of putting an evidence collection unit in crime laboratories is that unit will be able to recognize collect and package the evidence correctly and also…
They must also confiscate any controlled substances (drugs) seized in violation of the law. They need to collect any devices at a crime scene containing explosive charge and any residue from explosion for suspected explosion charges. Fibers are another form of physical evidence. Investigators have to determine whether fibers are natural or synthetic. The transfer of fibers may be helpful in establishing the relationships between objects and people within a case. They must also establish the identity and place at the scene where there are fingerprints. Firearms, projectiles, and cartridges are another type of physical evidence. Criminalistics investigators have to identify and compare them to other exemplars and firearms. They have to tell whether firearm residue was present and if so approximately what distance and angle was the bullet coming from. In some cases there is glass involved in a crime scene. They need to examine glass particles, window panes with holes, and broken windows to determine the transfer evidence, sequence and origin, and characteristics. The criminalistics unit is composed of different departments…
* The role of the forensic chemist in a crime scene investigation is that they analyze chemicals, organic and inorganic samples. They identify components using many tests.…
Saferstein, R. (2009). Forensic Science: From the crime scene to the crime lab. Upper Saddle River, NJ: Prentice Hall.…
A decent amount of murderers always leave behind clues for the Forensics team to allow them to figure out who was the culprit in the crime. One really big clue is DNA, fingerprints, and blood at crime scene. In our chemistry mystery, our murderer slips some sodium sulfide into a mixed drink, then finishes the victim with a pistol, but the evidence remains at the crime of the scene and the blood is found splattered all around.…
Edmond Locard, a French scientist and one of the early pioneers in forensic science believed that “When a person or object comes in contact with another person or object, there exists a possibility that an exchange of materials will take place” (Lynch & Duval, 2011). This theory better known as "Locard's Exchange Principle” is the foundation of the forensic study of trace evidence as we know it today. Trace evidence is very important in forensic investigations as this evidence includes different types of microscopic materials as well as some materials that are easily visible to the naked eye. Trace evidence examination is the analysis of small particles in order to assist in establishing a link between a suspect and the victim of a crime or…
Many cases are won or lost by the weight of the prosecution’s evidence. Through methods of discovery of evidence, both the prosecution and defense have equal opportunity to develop evidence they believe is needed to prove or dismiss/ reject claims. Trace evidence and the preservation of evidence are very vital in any investigation. These two components are two of the most important things that can help investigators find their suspect(s), and lock them up or if done without proper care, the preservation of evidence or lack thereof can possibly make or break a case. Investigators taking the time out to pull trace evidence off of their victim(s), and placing it in whatever object is fit to hold and preserve the evidence, is very vital, because…
look for at a crime scene and what evidence will aid in the prosecutions of criminals.…
A successful crime scene investigation depends deeply on the collection and analysis of various kinds of evidence. Forensic scientists rely on the classification of certain evidence and they have different ways of dealing with it. One major difference is biological and physical. Physical evidence refers to the collection of anything at the crime scene that comes from a nonliving origin. Where biological evidence refers to anything from a living being. The most important can be anything from fingerprints, marks on surfaces, bullet casings, and bullets. Biological evidence includes bloodstains and DNA.…