Understanding blood splatter as evidence
If you turn on the TV at night, you are likely to find a TV show, and investigators are using some sort of forensic or scientific method to collect or identify evidence. If you don't go into crime TV shows, you can turn to real TV shows, analyze the crime scenes that have been resolved, and use the forensic evidence collected at the site to reject the suspect.
I have more than 30 years of law enforcement investigations and deal with hundreds of homicides. I can insure you today; if you are dealing with a case in front of a jury, if you want to convict, you'd better be able to show some type of Forensic or scientific evidence.
In this article, I will explain some of the basics of blood evidence and how to interpret the clues left by blood evidence.
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The interpretation of blood patterns and blood patterns is a very convincing piece of evidence that a researcher can understand and recognize and interpret when used.
Blood evidence is most commonly used by law enforcement investigators in criminal cases with blood splatter experience and training. However, if a private investigator is assisting a defense attorney with a lawyer or working with a family member in an illegal death case, and he/she has knowledge and knowledge of the blood type, then it is equally useful.
Some of the items that blood evidence can show are movement and momentum during the attack, the type of weapon, and whether multiple types of weapons are used. It will show trained personnel the number of uses of weapons or weapons, as well as the distance between the victim and the attacker.
There are three basic types of blood types:
[1] Low speed splash.
This happens with minimal or no force. The blood mode is much larger than the medium and high speed blood modes.
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This is usually caused by gravity, such as blood falling from a finger or hand.
[2] Medium speed splash.
This type of blood type is usually caused by some form of force or movement. This blood pattern is common in pulsating attacks. Blood moves or transports through something that is not just gravity but lower than high speed.
Remember that the key to this type of blood splatter is that during any type of blunt trauma, the first blow or blow does not produce any type of blood pattern. Until the actual wound has begun to bleed from the wound and the second strike is stuck, causing the blood to disperse from the force or fall off the weapon. A good rule of thumb is that the bigger or more blunt the weapon, the smaller the blood drop.
[3] High-speed blood splashing.
This type of pattern is produced by enormous external forces. The simplest way to describe this type of pattern is often called fog or spray. High speed mode is usually produced by gunshots, explosives, and it is generally known that heavy machinery injuries can produce high speed modes.
Due to their size, high velocity blood splatter droplets are usually invisible to the naked eye. In the study of high-speed blood splatter, it is best to use high-intensity light and/or a magnifying glass to locate and identify blood evidence due to blood droplet size.
High-speed blood splatter can also be used to determine the distance of objects involved in the shot. When the bullet enters the body, it produces an effect called "backlash." This is the bullet blown back from the direction of the bullet. This fine fog will only travel two to three feet away. You will often find tiny misty droplets [high-speed blood splashes] on your sleeves, and sometimes the chest will shoot weapons.
In the case of self-defense, this may be very important when trying to determine or dispute the distance between the shooter and the victim. In some cases, in order to identify a shooter, this blood evidence is often difficult to see and overlooked. The suspect did not see any blood on his clothes and could not clean up after participating in the attack or homicide. After the investigators found high-speed blood splatter on the sleeves of the report shirts, some of the reported cases have become homeless.
Another blood evidence is blood transfer. This is blood taken from one source [such as hands, hair, or even clothes] and then transferred to another object.
When examining blood evidence, remember that blood will flow down by gravity and be fluid, which will take the path of least resistance. This will help you determine where the victim was injured and whether the victim was moved in any way. Often lack of blood evidence or "invalid" indicates that something is blocking blood flow or splashing. Again, this can indicate that the victim was moved or that there is some evidence in the scene.
Researchers using on-site blood evidence can also determine the angle of impact. The arc sine is determined by measuring the width of the blood and by their length [minus the tail]. This will determine the angle of impact. Once the investigator knows the angle of the impact, this can help the investigator determine if the victim is standing, kneeling or lying down when the event occurs. Or even if the attack moves around.
This article is only a basic concept of using blood evidence in your investigations. However, as you can see, only the basics can help you with your case.
Orignal From: Forensic Bloody Analysis - How to help solve crime
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