Gunpowder explosion. Gunpowder exploding in a ball of metal gauze. Gunpowder was known in China by the 10th century AD. It is a mixture of 75% potassium nitrate, 15% charcoal and 10% sulphur. It burns very rapidly, and the gases produced cause an increase in pressure leading to explosion.
May 7th, 2013
Viewed 40 Times - Last Visitor from Wenzhou, 02 - China on 01/03/2020 at 7:16 PM