Which vulnerability arose in early cast iron cannons due to uneven cooling?

💡 Explanation

Thermal shock vulnerability increased because differential cooling created internal stresses; tensile failures thus occurred during a rapid temperature increase after firing, rather than uniform heating, therefore, expanding equally across the entire barrel.

• Which challenge did ancient Inca terrace farming specifically overcome, relating to water's downslope movement?
• Which design constraint limited the accuracy of medieval Islamic astrolabes used in trigonometry?
• Which soil degradation outcome arises when pre-Columbian terrace farming lacks contour plowing optimization when cultivating maize?
• Which consequence results when terrace slope angles exceed soil stability limits in ancient hillside agriculture?
• Which risk increases when Roman concrete fortifications were built with high amounts of seawater during construction?
• Which outcome emerged during Qin dynasty crossbows that used multi-bolt firing?