By Hal W. Hendrick
Written via qualified human factors/ergonomics execs and a criminalist and firearms specialist, all of whom have testified as professional witnesses, Human components in Handgun protection and Forensics attracts on their bold collective wisdom event to offer the 1st scientifically established quantity within the box. This seminal paintings identifies a variety of human components in handgun layout, education, and similar human habit in unintended and inadvertent taking pictures incidents. The e-book presents an summary of handgun use typically yet makes a speciality of firearm dealing with in unintended and inadvertent shootings. It describes the self-discipline of human components and ergonomics and contains on hand statistics on shootings, examines their obstacles, and experiences real instances to figure out human motives in accidental and inadvertent shootings. It offers a background of firearms and info the parts and mechanics of handguns and ammunition to bare protection difficulties in present designs. It explains the basics of capturing and the way violation of these ideas can lead to unintended or inadvertent shootings. The authors pressure the significance of firearms defense education. They overview quite a few security education courses (including these from the nationwide Rifle Association), examine inconsistencies in easy security ideas, and make feedback to enhance security education. the significance of teacher education can also be emphasised. The ebook concludes with a precis and alertness of the former themes to forensic and investigative settings and offers recommendation for human factors/ergonomics execs as professional witnesses. The e-book comes with an accompanying DVD with hundreds and hundreds of colour images to aid the themes lined within the textual content.
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Additional info for Human Factors Issues in Handgun Safety and Forensics
In a case investigated by one of the authors (Hendrick), a large man holding a car key attached to a backpack lock, with the key protruding from his hand clenched around the lock, approached a woman at night in a grocery store parking lot to ask her if she could give him change for a dollar bill. The woman interpreted the key as a knife blade and started yelling hysterically that he had a knife and she was being attacked. Not being able to calm her, the man ran away, but later was charged with attacking her.
The Chinese refined the chemical formula over centuries and slowly weaponized it as well (Kelly, 2004). The Chinese developed firelances, which were spears with attached bamboo containers of powder designed to shoot flames at the enemy. , stones and bits of broken porcelain) worked even better against the enemy, and the simple hand cannon was born. Later, metal replaced the bamboo, allowing more powerful charges of powder. Moreover, gunpowder was employed to make bombs that were launched by catapults against besieged cities.
The powder was poured down the barrel, a projectile was pushed on top of the powder charge followed by wadding, and the firearm was fired using a glowing coal or smoldering match to ignite the gunpowder through a touchhole at the closed end of the barrel. The area around the touchhole might be dished to hold a priming charge. Initially the shaft was very long and the gun was supported by an upright pole, but later it was shortened considerably and held under the upper arm for firing. Primitive as they were, there are reports of hand cannons penetrating armor by 1425.