The heat given out by the combustion of gunpowder is 1,145 Fah. The temperature of the flame must be 5,390. The tension of the gases at the moment of explosion does not exceed 4,373 atmospheres, in place of 50,000 or 100,000, at which it has been estimated.
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While trying to discover a potion of immortality, Chinese alchemists of the Tang Dynasty accidentally discovered saltpeter, the main ingredient of gunpowder. Upon further experimentation, salt peter was combined with charcoal and sulfur.
some unique early weopons fire arrows, gunpowder lit flamethrowers, soft shell bombs, hard shell iron bombs, fire lances, and possibly early cannons known as "eruptors".
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