Journal of California and Great Basin Anthropology, Vol. 13, No. 2, CASE STUDIES IN LITHIC TECHNOLOGY OF WESTERN NORTH AMERICA (1991), pp. 180-193 (14 pages) ...

WE are told in the Preface to this work that “the consideration of the motion of a projectile naturally divides itself into three parts—first, its motion in the bore of the gun; second, its motion ...

Back in October of last year, the United States Army completed a demonstration of the XM1155-SC guided projectile from an M109 Paladin self-propelled howitzer. The round, which was developed by BAE ...

The clock seems to be running out for the Navy's much-hyped electromagnetic railgun after the service closed down development on the hypervelocity round it was meant to fire in order to make room for ...

Vomiting is something that everyone will experience at some point. It’s typically accompanied by a wave of nausea, and a queasy feeling in the stomach afterward. ‌ Projectile vomiting is when your ...

This is because projectile vomiting is not just throwing up. It involves more force. Sometimes, a child’s vomit, when "released," can go flying across a room. A child who vomits way too much and with ...