PPT-BALLISTICS

Gunshot Residue GSR Wounds and Trajectory Gunshot Residue Traces of smoke and particles of unburned powder carried sideways from the firearm by the expansion of gases as the bullet is fired GSR containing nitrates can stick to the person holding the firearm and leave evidence on the shooter. Bullets and Casings. Timeline of Ballistics Examination. 1923:. FBI Bureau of Forensic Ballistics established. 1929:. weapons used in the St. Valentine’s Day massacre identified by matching bullets. Notes on page 75. Warning. Next slide is slightly disturbing. Entrance . vs. exit wounds. Entrance Wounds are typically smaller and neater. Exit Wounds are typically larger and messier. Collecting and Packaging Ballistic evidence. What is Forensic Ballistics. Any projectile is considered ballistic evidence.. These include bullets, arrows, objects launched from a slingshot etc.. Most often the scientist is looking at bullets.. The goal is to match a projectile with the weapon it came from.. LASSITUDE (LAS uh . tood. ) – listlessness; weariness 1. After . eating three servings of Thanksgiving dinner, George succumbed to a feeling of LASSITUDE and fell asleep on the chair.. . Cranny(KRAN . The vast majority of. U.S. homicides involve. guns. And they are more. powerful than ever.. . Lansing State Journal,. July 2007 . 1998--Deaths due to handguns. US 11,789 . Germany 373. Canada 151. 9. /3/15. Bellwork. How are you going to make a match between the crime scene bullet casing and test fired ones?. Ballistics p.34-35. Topic: Casings. Evidence: Match caliber and firing pin impressions to crime scene guns.. 9. /4/15. Bellwork. What part of identifying the casing is the hardest for you?. Closure. What did you learn about the casings by doing this lab?. Bellringer 4/14/15. What is ballistics?. The study of bullets and firearms.. Bellringer 4/14/15. Ballistics Notes . (pages 492 . – 494 – INB 51). What questions are ballistics experts attempting to answer?. Linear DensityFilamentsTwaron-TypeStrengthTenacityElongationChord at Breakat Breakat BreakModulusDtex (eective)No.mN/texGPaMicrolament Ultra Micro MicrolamentMicrolamentMicrolamentMicrolament 1 “ A well regulated militia, being necessary to the security of a free state, the right of the people to keep and bear arms, shall not be infringed.”. 2. nd. Amendment to the US Constitution. “. Dr. Andrew Ketsdever. Hybrid Propulsion Systems. A hybrid propulsion system is one in which one propellant is stored in liquid (or gaseous) state while the other is stored in solid phase.. Solid Propellant / Liquid (or gas) Oxidizer. With new chapters, homework problems, case studies, figures, and examples, Ballistics: Theory and Design of Guns and Ammunition, Third Edition encourages superior design and innovative applications in the field of ballistics. It examines the analytical and computational tools for predicting a weapon\'s behavior in terms of pressure, stress, and velocity, demonstrating their applications in ammunition and weapons design. New coverage in the Third Edition includes gas-powered guns, and naval ordinance. With its thorough coverage of interior, exterior and terminal ballistics, this new edition continues to be the standard resource for those studying the technology of guns and ammunition. This bestselling DIY handbook now features new and expanded projects, enabling ordinary folks to construct 16 awesome ballistic devices in their garage or basement workshops using inexpensive household or hardware store materials and this step-by-step guide. Clear instructions, diagrams, and photographs show how to build projects ranging from the simple match-powered rocket to the more complex tabletop catapult and the offbeat Cincinnati fire kite. The classic potato cannon has a new evil twin—the piezo-electric spud gun and the electromagnetic pipe gun has joined the company of such favorites as the tennis ball mortar. With a strong emphasis on safety, the book also gives tips on troubleshooting, explains the physics behind the projects, and profiles scientists and extraordinary experimenters such as Alfred Nobel, Robert Goddard, and Isaac Newton. This book will be indispensable for the legions of backyard toy-rocket launchers and fireworks fanatics who wish every day was the fourth of July.