Projectile: a fired or propelled object, such as a bullet, that with no capacity for self-propulsion Polyatomic ions: an ion of two or three atoms that has a charge and acts as a single unit (for example, hydroxide ion = oh-) Pellets: small, metal balls found within certain types of shotgun cartridges Muzzle: the forward, discharging end of the barrel of a firearm Kinetic energy: the energy possessed by a body because of its motion Gun barrel: the tube through which a bullet travels when a gun is fired Kennedy assassination) and one fictional crime case that involve forensic ballisticsĪmmunition: projectiles, such as bullets, together with their fuses and primers that can be fired from guns or otherwise propelledīipod: a stand having two legs, as for the support of an instrument or a weaponĬalibre: the diameter of the bore of a firearm, traditionally shown in hundredths or thousandths of an inch, but may be in millimetresĬarbine: a lightweight rifle with a short barrelĬavitation: the formation of an empty space within a solid object or bodyĬoncealment: hiding or kept from being seen, found, or discoveredĬombustion: a chemical change accompanied by the production of heat and lightĬorrodes: the gradual destruction of a metal or alloy, especially oxidizing or chemical action (rusting)įiring pin: the part of the bolt or breech of a firearm that strikes the primer and detonates the charge of a projectile (bullet) discuss one historical crime case (such as Washington sniper shootings and John F.describe how forensic experts test for gunpowder residue and primer residue using various scientific techniques and technologies (such as Paraffin Test, Modified Greiss Test, Sodium Rhodizonate Test, Harrison-Gilroy Test, Neutron Activation Analysis and/or Flameless Atomic Absorption System, and X-ray analysis using a scanning electron microscope).understand that forensic ballistic experts use various gunpowder and/or primer residue chemical test techniques to determine if a suspect has fired a gun.discuss the possible value of a comprehensive national or global ballistic fingerprint data bank and propose the positive and negative implications of having such a data bank.recognize that gun barrels have unique lands and grooves and that these markings leave unique marks or ballistic fingerprints upon fired casings.graph and analyze data to compare the average velocity, kinetic energy, and trajectory of handgun, rifle, and shotgun rounds.describe how the structure, function, velocity, kinetic energy, and trajectory of the three main types of firearms (handguns, rifles, and shotguns) differ.outline the major components of a handgun cartridge, a rifle cartridge, and a shotgun shell.appreciate that forensic ballistics involves internal ballistics, external ballistics, and terminal ballistics.understand that forensic ballistics involves the scientific analysis of evidence from crime scenes in which a firearm was used (such as firearms, bullets, bullet holes, bullet trajectories, cartridges cases, and gunshot wounds).Lesson 4 explores one historical crime case and one fictional crime, both relating to forensic ballistics.īy the end of Module 4, you should be able to….Lesson 3 describes five types of testing for gunpowder residue. This lesson also addresses the concept of ballistic fingerprinting. Lesson 2 examines the distinct properties within gun barrels and the ways these properties help law enforcement in criminal investigations involving firearms.This lesson also outlines the main components of bullet cartridges and firearms. Lesson 1 of this module outlines the basic types of firearms and the unique velocity, kinetic energy, and trajectory capabilities of each type.Information critical to the successful investigation of firearm-related crimes is obtained from various sources, including matching a bullet to the gun from which it was fired, analyzing traces of gun residue found on a suspect, and tracing shell casings left at a crime scene to a particular firearm. For more than a century, the collection of evidence related to the use of firearms in the commission of criminal offences has been a standard investigative tool. Forensic ballistics involves the scientific analysis and interpretation of evidence and phenomena related to the illegal use of firearms.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |