Which risk increases when cast iron cannons experience frequent muzzle explosions?

💡 Explanation

The explosions indicate unstable combustion. Propellant confinement results in a deflagration-to-detonation transition (DDT), because positive feedback accelerates the gunpowder's burning rate. Therefore, detonation sensitivity risk increases, rather than solely slower fragmentation often relating to simple overpressure.

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• Which threat increased in medieval rope bridges due to diurnal cycles?
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