Identifying Trace Evidence Forensic Chemistry and Trace Evidence Analysis CJ 385 Professor Luckas July 15‚ 2012 Question 1 In order to identify that a white powder might contain cocaine‚ a forensic drug chemist can conduct a number of tests. The tests in order to identify cocaine are conducted based on the physical and chemical properties of cocaine. The physical and chemical properties of a substance make it unique‚ thus identifiable and distinguishable from other physical evidences obtained
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Tori Kelly 03 Nov 2010 College Writing I Mr. Denver Long KGA #2- INFORMATIVE ESSAY ANTHOLOGY OF FORENSIC EVIDENCE How many people does it take to solve a murder? Investigating crime scene evidence is one of the most intricate disciplines in criminal justice‚ requiring a team of several forensic specialists. This field has become so scientific‚ with advances in technology‚ that the viable information it provides is more readily accepted as incriminating in court. For this reason‚ attention
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Physical Evidence? Physical evidence is any object that can establish that a crime has been committed or can link a crime and its victim or perpetrator. Almost anything can be physical evidence‚ to list the objects that could be used as physical evidence is impossible. (Saferstein‚ R. 2009) Common Types of Physical Evidence There are several common types of physical evidence that are found at a crime scene and can be used in cases. However‚ the weight of a given piece of evidence is ultimately
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Collecting evidence is an essential factor to the world of criminology. The evidence can determine whether the person is guilty or not guilty. The matter of handling evidence correctly becomes a priority to anyone who is working in the case. Throughout the years civil and criminal cases have impacted our world. They have determine whether the suspects of cases and have narrowed down to the offender. But the process that it takes to establish a final conclusion to present to a court is a long
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Abstract Physical evidence is what is collected after a crime has been committed. This evidence may be introduced into a trial. This would be the evidence that is collected that is from a non-living origin. There are many types of physical evidence that the investigators collect. This type of evidence can conceivably include all or part of any object. The evidence that is found at the scene of a crime is considered evidence. One type of evidence that is found is physical evidence. This type can
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supreme court decisions are what made police put a great emphasis on securing scientifically evaluated evidence so much in fact that the confession is almost no longer a recent investigation tool. 2. Describe the criteria for admissibility of scientific evidence as laid out in Frye v. United States. The criteria for admissibility of scientific evidence as laid out in Frye v. united states was the systolic blood pressure deception test also known today as the polygraph
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1. Explain why the Hearsay Rule was developed and why the admission of hearsay in a criminal trial may violate the defendant’s Sixth Amendment rights. a. Hearsay is an out of court statement offered in court to prove the truth of the matter asserted. The Hearsay Rule was developed in order to prevent unreliable testimony from being admitted in court and misleading the jury. Hearsay was considered unreliable because it was not given under oath‚ cannot be heard and observed by the jury‚ and cannot
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Forensic evidence is not a new thing in courtrooms. Forensic evidence has been around for decades just not as reliable as today. There have been many advancements to forensics‚ the techniques used and the technology involved. Forensics is " Evidence that can be used in a court based on science. It can be blood tests‚ ballistics‚ and DNA." Over the years‚ there have been many cases where false forensic evidence has wrongly convicted or acquitted cases. There are other cases where forensic evidence has
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(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
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Substitutes for Evidence During a trial there may come a time that a jury is specifically told what facts to believe instead of having both attorneys introducing evidence to them. The three categories that these facts fall under are called stipulation‚ judicial notice and presumptions (Hails 2009). A stipulation is an agreement between both attorneys that a one or more facts exist in regards to the case (Hails 2009). A written document stating the stipulation is introduced in court if the
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