Forensic Disciplines Used For Investigations And Trials

Physical evidence is anything that can establish a crime has occurred and anything that links the crime to a criminal. Three examples of physical evidence are fibers, weapons, and hair.

Forensic science can be defined as the relationship between law and science; it answers the questions of how, why and who committed the crime, with the input of multiple actors. However, there are currently problems with

One of the most important purposes of physical evidence is to establish the identity of a suspect or victim. Some of the most valuable clues at a crime scene are fingerprints. "Processing a crime scene" is a long, tedious process that involves focused documentation of the conditions at the scene and the collection of any physical evidence that could possibly shed light on what happened and point to who did it.

However, back in the 1980s, detailed studies were done to try to accomplish this task. One specific comprehensive study was done in 1984 by Peterson et al. In this study, the analysts found that physical evidence was discovered in only about twenty to thirty percent of serious crimes (Peterson, 2013). When each of the crimes were studied separately, however, they found that only crimes such as homicide, drug, or rape resulted in a large chance of physical evidence being found at the crime (Peterson, 2013). Cases such as attempted murder, burglaries, and robberies yielded lower chances of the retrieval of physical evidence from the crime (Peterson, 2013). When considering all of these possible crimes, the most commonly collected evidence were controlled substances, and then in lesser amounts, there was other physical evidence such as blood, hair, firearms, and fingerprints (Peterson, 2013).

Forensic evidence plays a huge role in most criminal cases. After the Daubert trial, forensic scientific evidence was reevaluated in criminal and civil cases. Scientific and forensic types of evidence can be extremely helpful in proving the case. It can help identify the suspect in a criminal case. That will help put a criminal in prison. There are many different types of forensic evidence that can be considered as scientific evidence. The different types include DNA matching, fingerprint identification, and hair evidence. The methods used to show these types of evidence are usually beyond the scope of knowledge that judges and juries know. Those types of forensic evidence are usually introduced as scientific evidence. Scientific evidence can sometimes be omitted from a courtroom or

Forensic evidence has been shown to be reliable due to many factors of evidence such as DNA, blood, fingerprints, etc.; however, many cases have shown that

Behind every court case there’s a train of forensic science evidence and research. Forensic science is the application of scientific principles of criminal justice. In many court cases a forensic scientists is the one on the scene collecting finger prints, photos, blood samples and other evidence. Unfortunately one of the controversial issues in the forensic world is the evidence and its lack of verification of its reliability. In the field of forensics there are issues in finding proof in generating conclusion, fundamental knowledge to solve problems, and the whole false memory defense in the court. These issues can be solved in many ways like extensive research, preparation and training. These issues

between a cut (an injury that is longer than deep) and a stab wound (an injury

Physical evidence/scientific examinations is the evidence found at the scene of the crime. This can include clothing, blood, fingerprints, weapons and much more. An example of physical evidence could be any listed above but also a bloody knife or a casing from a bullet.

After doing their job in he crime scene, the evidence they took will be taken to the forensic scientist. Crime scene investigators will look at the photographs and connect their theories based on the crime that occurred. The forensic scientists will also examine the victim’s clothes, while the medical examiner will analyze the victim’s body for more clues and evidence that they may find and they will all be doing this in the crime lab. The things they may find could be hair, fiber, semen, blood, another person’s DNA, bruises and many more. After the forensic scientists

The book gives a general overview of the field of forensic science. The sections of the book include “The Scene of the Crime; Working the Scene--The Evidence; Working the Scene of the Body Human;

Forensic science borrows from a number of sciences which include: physics, Biology and chemistry. It therefore involves examination of a wide spectrum as compared to any other method of investigation. Due to the wide spectrum of investigation and evidence analysis the method offers; it ensures that the results are accurate and can be used in the court of law to make a decision. The method establishes the existence of a crime, the connection between the crimes and the

Today, more than ever, the quality of evidence in criminal cases is scrutinized because of contamination. Contamination is the introduction of something that physically corrupts a substance at a crime scene that was not previously there; it comes in many forms and most often times comes from the humans who investigate a crime scene. It is imperative that prevention of cross-contamination is implemented when gathering evidence. Several of the more sensitive forensic techniques such as trace analysis, bloodspatter interpretation, and DNA comparison are not being used to their fullest potential. Items of physical crime scene evidence are not always visible to the naked eye and may be easily overlooked so deliberate and methodical approach to collection and preservation of evidence is essential. Prosecutors have lost cases due to crime scene contamination; this could be prevented by simple and productive behaviors. The U.S. Supreme Court, in a leading case on physical evidence, stated:

Evidence is defined as any matter of fact, the effect, tendency, or design of which is to produce in the mind a persuasion, affirmative or disaffirmative, of the existence of some other matter of fact that a crime has been committed.(Paul B. Watson, 1986) In a legal sense, evidence is the information presented in court during a trial which enables the judge and jury to decide a particular case (Garland & Stuckey, 2000). There are two main types of evidence, which are testimony and physical items which can be presented to the judge and jury during a criminal trial. Physical evidence is any evidence found at the perpetrator’s

Evidence plays a major role usually in trail of a case. Several types of evidence can be used. Evidence can be divided into two categories – Testimonial evidence and Physical evidence. Physical evidence is one type of such evidence; this evidence can be brought to court room for observation during trails. This is the most important evidence. Physical evidence is also known as real evidence, they consist tangible article from tiny microscopic to macroscopic evidence from large building to molecules in air. It can be in solid, gas or liquid form. Advances in forensic science have increased the use of physical evidence