Flintlock, a firing mechanism used on early firearms. It was first used on muskets about 1650, later on pistols. The cock, or hammer, of the flintlock held a piece of flint which, when the trigger was pulled, struck a piece of steel and caused sparks to fly. The sparks ignited a small priming charge of powder in a pan, which was uncovered as the flint struck the steel. The fire flashed through a touchhole, exploding the main powder charge and discharging the ball (bullet). By about 1850 flintlocks had been replaced by percussion locks.
Sure, llamas are our friends. But little did we know that these fuzzy, camel-like creatures might save us all should the End come in the form of a biological attack.
C-4 is in the news quite a bit these days -- it's a powerful explosive that's used in terrorist attacks all over the world. Find out what C-4 explosive is and what it can do.