Dražice PTO 5 Průtokový ohřívač vody, beztlakové Elektrické průtokové ohřívače vody řady PTO 5 jsou svým tvarovým řešením a rozměry určeny k použití pro umyvadlo…
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The Chinese were the first to make gunpowder and to use it in warfare. The gunpowder formulae in the Wu Jing Zong Yao (early 1040s) are well known. The dates at which various gunpowder weapons came into use in China, what kinds of gunpowder…
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What evidence supports the early development of the fire-lance in China?The fire-lance is documented as early as 1132, being used effectively by defenders during the siege of De'an. Historical texts indicate that fire-lances were prevalent by at least 1000 CE in the Song Empire.How did Mongolian armies utilize gunpowder weaponry in their campaigns?Mongol forces effectively employed Chinese fire-lances and explosive bombs, significantly enhancing their siege capabilities. Accounts from the early 1200s describe devastating bomb attacks during the conquests of Khwarazm.What role did the development of explosive gunpowder play by the 12th century?Explosive gunpowder likely emerged by the 1150s, marking a pivotal advancement in military technology. Usage of explosive devices like bombs and the strategic control of saltpetre were documented by 1076.