Gsr Research Papers

A firearm is one of the weapons that may be used when hunting. A firearm utilizes pressure produced from the burning of gunpowder to create gas. The pressure produced from the burning powder propels a projectile out of the barrel at a target. In rifles and most handguns the barrel has rifling on the inside of the barrel to make the projectile spin to travel better in the air. Rifling are groove that spin as they go through the inside of the barrel. Shotgun barrels are smooth and can fire “slugs”, a single projectile, or “shot”,

An investigation involving a firearm is a specialty of forensic science which focuses on the examination of firearms linked to ballistics. Ballistics is related to finding out the exact flight path of projectiles. Ballistics is the area of study that examines the exact path of the bullet from the moment it leaves the muzzle of the firearm up until it hits the target. During examination many items are collected for evidence including the firearm, bullets, live ammunition, cartridge casings, trace materials such as powder residue, and anything damaged by the projectile. Firearms are often divided into three processes: Internal, External, and Terminal Ballistics. Internal refers to the inside of the firearm; the space of time in which the shooter pulls the trigger, and the when the bullet is exiting. External ballistics is the flight between leaving the muzzle of the firearm, and it striking its target. Terminal ballistics is the impact of ballistics that refers to the examination in which the projectile strikes a target. All firearms leave markings on the cartridge casings once expelled when firing. Ballistic identification and microstamping laws make it possible to link a cartridge recovered to the

Forensic ballistics and firearm investigation begin when the bullets, cartridges, a weapon, or any combination of the above found at a crime scene. With the evidence, a crime laboratory will explore for clues on some things that might cause a suspect or possible to prove that the things were used in the crime. By contrast, the markings on the bullets or cartridges found at the scene with those discharged from the suspect’s weapon, a ballistics expert will typically confirm if the rounds came from a similar weapon. Just the act of cycling a cartridge through the weapon without firing it will leave permanent scratches on the case that is distinctive to the weapon.

The second stage deals with External ballistics studies the flight of a bullet, and everything else after the bullet has left the gun barrel. The final subfield is called terminal ballistics, which focuses on the effects made from when the bullet has hit its target. Many people often overlooked the important of forensic ballistics, when a victim, or a suspect is shot with guns the wounds they received and can tell a lot about the characteristic of the weapon that has been used. If the weapon s left behind at the crime scene can provide important information about the type of bullets that was fired, information o the potential suspect who has committed the crime, and sometimes the reasons behind the shootings

gSLIC11 – gSLIC [20] is a parallel implementation for Simple Linear Iterative Clustering (SLIC) superpixel segmentation method by using framework of NVIDIA CUDA

After spending the day sightseeing in Palm Springs, you will likely have worked up an appetite.

Williams’s car was also took into evidence and GSR was done on the passenger door and the inside of the car, none was found. GSR is important in criminal cases, it can give you the make, model, and tell you when it was fired, who fired it. It also leaves residue on clothes, with all these clues if you had no clues you could after the testing is done and it can blow a case wide open. In this case we have a suspect in custody with a weapon that matches ballistics, but we have to wait for court innocent until proven

One of the most important aspects behind a gun is the gun powder. Gun powder is an explosive powder that when ignited sets off a violent reaction. The discovery of gun powder or black powder is very ironic, the Chinese in the early 12th century were trying to make a potion for immortality and they discovered what would be one of the most deaths inductive creations known to man. Gun powder

That code would, in theory, allow police to connect spent casings at crime scenes to the gun that fired them, though it has never been tested in the field. All the character representing this information would have to be imprinted in the primer of the casing by the firing pin on every round ” (RANGE365). Microstamping could be a breakthrough in technology. Also, “During the stress test, Lizotte and Ohar fired 1,500 rounds from the Colt handgun. This firearm was purchased as a used model and equipped with microstamping technology.

The case that was researched is the case of the people vs. Robert Blake. In this case it is stated that the husband Robert Blake murdered his wife Bonnie Bakley. It was determined that Mr.Blake fired shots from a world war 2 vintage 9mm Walther P38 Luger pistol. The weapon was found in a dumpster near where Mr. Blake parked his car and was covered with dirt and motor oil. The 9mm pistol was cleaned and tested fired. And the gun was fired to see if it would leave gunshot residue behind after being fired.

During my first day in DTD, and after visiting the NCO Heritage and Education Center, I came up with an idea that could be a little bit crazy but some students from this class can be part of our NCO history.

Solid shot was a kinetic energy round. Its speed and mass were used to penetrate walls, fort and armor. To produce any type of casualty effect, the round would have to actually strike the target. Solid shot was particularly used against ironclad ships where a shell would do little or no damage. During one test an 8 inch Brooke rifle with 16 pounds of powder fired a 140 pound ball 260 yards and penetrated eight inches of iron backed by 18 inches of solid wood.

Sports were very common in Viking communities. One of the most favored sporting activity was Grappling, a competitive sport practiced whenever people came together.

Most of the crimes that are committed in our society involve a handgun. Gunshot wounds can be very challenging on determining whether or not it was a suicide attempt or homicide. There are some indicators that assist investigators reach a conclusion on gunshot wounds. One of the indicators is the location of the gunshot wound such as the entry and exit points. For example, as the bullet passes through the skin inward and can often travel through the body on a straight path. Furthermore, the damage to the tissue around a gunshot wound helps the investigators with the determining the distance the weapon was fired from (Swanson, Chamelin, Territo, & Taylor, 2012).

Have you ever wondered hot snipers are able to make long distance shots? Or how crime lads can determine the exact gun used in a crime? Well those both involve ballistics. The actual technical definition of ballistics if the science or study of the motion of projectiles, as bullets, shells, or bombs. (“Ballistics”). The origins of ballistics can be traced back to the 15th century when a german gunmaker discovered barrel rifling.(Evans 27). In order to understand ballistics and its effect on modern crime labs you need to understand interior and exterior ballistics, which treats of the motion of a projectile while it is still in the gun and considers the motion of the projectile from the time it emerges from the gun until it reaches the target; Newton's Laws of motions, and the coriolis effect.