Presentation on theme: "By Iain Poi. Basis Ballistics is a field in forensic science that is used to investigate and corroborate clues from traces left behind from a gunfight."— Presentation transcript:
Basis Ballistics is a field in forensic science that is used to investigate and corroborate clues from traces left behind from a gunfight. The detective can tell where the location of the bullet was fired and the height of the person through the angle and depth of a bullet indent in the wall. Gun powder residue can be traced back to the criminal using dogs. The bullet can be used to identify the firearm and possibly the owner of the firearm through the database of gun owners.
Relation to Forensic Science Forensic Science uses a whole range of science to gain different types of evidence at a crime scene. Ballistics uses physics, maths, chemistry and other sciences to gain firearm related evidence at a crime scene Note: Ballistics was used in Batman Begins in the turret scene.
Gun Ballistics There are usually three main aspects in the physics of gun ballistics. 1. Internal Ballistics – the study of the bullet inside the barrel. 2. External Ballistics – the study of the bullets path outside the barrel. 3. Terminal Ballistics – the study of the bullets path through the target.
Firearm identification The forensic officers can usually identify the firearm using their one main method. They look out for unique marks imprinted on the gun cartridges, bullet casing and even spent bullets to match up to the specific gun. The markings could be breech marks, firing pin impressions or ejector marks on spent bullet shells.
Computer Analysis and Databases Assist Crime Labs If the firearm is not recovered, and the crime lab has the marks on a cartridge case there's yet another approach. They can input it into one of the many databases – similar to CODIS, the DNA database. Hits are made when a system user finds a match between a specimen they added into the database and a previously filed specimen. Comparison of Impressions on Two Cartridges
John F. Kennedy Assassination Case Study President Kennedy was struck by two rifle shots fired from behind him. The shots that struck President Kennedy from behind him were fired from the sixth floor window of the southeast corner of the Texas School Book Depository building. Lee Harvey Oswald owned the rifle that was used to fire the shots from the sixth floor window of the southeast comer of the Texas School Book Depository building. Lee Harvey Oswald, shortly before the assassination, had access to and was present on the sixth floor of the Texas School Book Depository building. Lee Harvey Oswald's other actions tend to support the conclusion that he assassinated President Kennedy.
How to become a Ballistics Officer 1. Study physics, chemistry and maths in high school 2. Get a degree in forensic science, criminal justice or criminology in a well-accredited university 3. Get an internship(similar to apprenticeship) in ballistics 4. Hopefully you can be accepted into a local forensics agency or police force!
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