Which consequence arose in early Chinese gunpowder weaponry due to impurities?

💡 Explanation

The early production of gunpowder frequently involved contaminates; therefore, it suffered from a reduced 'burn rate' because impurities interfered with consistent oxidation-reduction, rather than spontaneous detonation, due to a stable deflagration.

• Which function did the Saracen Arch, employed during Medieval Islamic astronomy observations, serve when aligning meridian sighting instruments?
• Which outcome resulted when Persian 'qanat' systems influenced Mughal garden design?
• Which constraint most directly limited the size/height of early Mesopotamian ziggurats when copper-arsenic bronze was available for anchoring?
• Which effect increased the scaling production of Song Dynasty crossbow trigger mechanisms when using cast iron?
• Which purpose underpinned the meticulous astronomical observations made at the Maragheh observatory during the 13th century?
• Which structural consequence results from sustained freezing within the pozzolan concrete of a Roman aqueduct?