Gunpowder is a mixture of sulphur, charcoal, and potassium nitrate. It burns rapidly, producing a volume of hot gas, Because of its burning properties and the amount of heat and gas volume that it generates, gunpowder has been widely used as a propellant in firearms. Gunpowder is classified as a low […]
Yearly archives: 2009
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A trebuchet is a siege engine that was employed in the Middle Ages. It is sometimes called a “counterweight trebuchet” or “counterpoise trebuchet” to distinguish it from an earlier weapon that has come to be called the “traction trebuchet”, the original version with pulling men instead of a counterweight. The […]