Splatter: Why Do Blood Patterns Work?

Have you ever wondered how investigators figure out who the criminal is in the investigations? Is it luck or is it science? Forensic Science is the use of scientific principals to analyze information connected to a crime and who committed it. One type of forensics is autopsies. In the Rage and Bone Shop by Robert Cormier, investigators did some analysis of the crime scene, but should have used other forms of forensic science to solve the crime. The use of forensics in the novel hindered the investigation.

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.

Blood spatter analysts are a crucial part of a homicide investigation. They examine the blood stains left behind at a crime scene with the help of criminal investigators. They try to find a pattern or trail with the blood to figure out what happened at the crime scene. These blood patterns can show where the victim was hit, how they were hit, if they struggled, and what kind of weapon the killer used. They use many techniques to collect evidence that can be analyzed at the lab. Common techniques are measuring the diameter of the blood drop, measuring the spatter zone, and taking pictures. Many analysts try to act out the homicide scene to piece together the crime scene and figure out what happened. They also sketch out the scene to go along

he Blood Spatter Analyst (also known as "Bloodstain Pattern Analyst") uses many techniques to collect and analze blood that has been left behind at a crime scene. They uses swabs and ultraviolet light, as well as photgraphy to collect and analyze trace evidence and recreate spatters. After analyzation of the spatter, they can determine what weapon was used, which direction the suspect or victim went, the number of wounds the victim suffered, the trajectry of a projectile, and what occured during a violent crime.

How to Become a Blood Spatter Analyst: Career and Salary Information. (n.d.). Retrieved September 13, 2017, https://www.criminaljusticedegreeschools.com/criminal-justice-careers/blood-spatter-analyst/

Prosecutors say DNA tests place Simpson's genetic markers on the drops of blood leading away from the bodies. There were also blood samples, similar to Simpson's and the victims, found on O.J.'s Bronco truck. Simpson's blood was also found on his driveway and his foyer. The prosecution says Simpson cut his hand during the murder explaining the trail of blood found in at the murder scene which could have come from only 1 out of 170 million sources of blood, which matched the profile of Simpson. The blood on the socks matched that of Nicole’s and only

Furthermore, crime scene from the blood placed O.J Simpson at the crime according to prosecutor. Significant amount of bodily fluid of blood were discovered along with the fact that bloody shoe prints that were essential in distracting the police force away from the bodies of the murder victims. Blood was precisely placed on a gate at the back of the murder scene apartment complex buildings, which prosecution figure out that blood from both locations had Simpson's gene markers. Further evidence shows O.J. Simpson had a cut locate on his left middle finger when police officials interview him, which was the day after the killings showing he was involve in some murder. Variety of different labs test the variables of the crime scene and they conclude that they can remove the possibility or chance of any foul play with the

Bloodstain pattern analysis (BPA), known in the criminal justice field as blood splatter analysis, has been studied since the 1890s. Blood splatter, or bloodstain pattern constructional readings, is a technique that seeks to piece together the incident that caused an individual’s bleeding. Understanding blood splatter on a wall or various surfaces can be instrumental in formulating if a crime was committed and if the blood discovered at the crime scene can be used as evidence. The first documentation of blood splatter research occurred at the Institute for Forensic Medicine in Poland, by Dr. Eduard Piotrowski . During Dr. Piotrowski’s research and documentation period, where he used live bunnies to research blood splatter from head

Forensic science is a key aspect of Criminal Justice that helps rid the streets of lunatics and murderers. One of the most important fields of forensic science is blood spatter analysis. Under the Crime Scene Investigation, analysts gather the information that could eventually lead to a victim’s killer. Basic and complex information can be found when analyzing blood. We can learn what kind of weapon was used, the time of death of a victim and other important facts that can help a case. The pattern that the blood gives off give forensic scientists the tools that they need to help solve cases.

In this day and age law enforcement agencies use many different types of technology in order to help combat and fight crime. Because technology is forever changing this means law enforcement officials need to stay up to date with the latest technology. I wanted to go over technology that is available to police officers, prison guards, and probation officers. One of the many technologies available to police officers are fingerprint technology which provides him the opportunity to successfully lift prints throughout a crime scene. Once these prints are lifted they will go through the proper chain of custody and be processed by the officers local or state lab to see if there is a match. Another form of technology is if blood is found at the crime, any type of blood that is found at the crime scene of course it would be swabbed, for anything that is collected you would also need to

Over the past several years forensic science has included both negative and positive aspects in the incarceration of individuals. Testing of blood types commonly used with sexual assault cases, in the 1980s, with using blood types A, B and O frequencies were distributed and a database was created. Although the database could administer a percentage of individuals with common blood types it was unable to differentiate specific people.

The Dexter T.V. show is about a blood splatter pattern analyst for Miami Metro Police Department who also accompany of an undisclosed serial killer. Hunting down criminals who

When deciding which cases should be assigned for investigation, the most important factor in my opinion would be available physical evidence. Physical evidence, although sometimes subjective when dealing with fingerprint analysis or handwriting analysis, is highly useful when other forms of it are present. The first being blood, semen or saliva evidence. These can be tested, even when on objects or clothing. Physical evidence can range from explosive residue, gun residue, drugs used, impressions, physical items left behind by victims or offenders and hair.

One piece of evidence that was used to help catch the killer, was the facial tissue under the victim 's fingernails (pg. 9). This would be biological evidence because it came from a living thing, and the person can be identified with DNA. It would also be circumstantial evidence because nobody saw the facial tissue being placed there or getting under the fingernails. This would also be classified as trace evidence because it can easily be transferred from one place to another. This evidence was used to help catch the bad guy. Since it was found on another victim thousands of miles away, it was easily linked to both murders. The facial tissue was found under the fingernails of the victim at the first crime scene. It also helps catch the bad guy

Every time somebody touches something, they leave behind a unique signature that forever links them to that object. This link is their fingerprints, which are unique to every person, for no two people have the same set, not even family members or identical twins. Palms and toes also leave prints behind, but these are far less commonly found during crime scene investigations. Therefore, fingerprints provide an identification process that is applicable to background checks, biometric security, mass disaster identification, and most importantly, crime scene investigations. Fingerprints are so differentiated because they are made up of distinct patterns of ridges and furrows on the fingers. The ridges are the “raised” portions of the prints, and the furrows are the “recessed” portions. This perceived uniqueness has led some people to falsely accept fingerprint analysis as absolute scientific fact. Although overall fingerprints are reliable, there are definitely situations where their accuracy can come into question.