Which risk was primarily managed in early Chinese gunpowder arrows by controlling grain size?

💡 Explanation

Premature ignition was a key concern; controlling black powder grain size optimizes the deflagration rate; faster than loose powder but slower than modern because a finer grain provides more surface area for consistent, controlled burning; thus, prevents accidental detonation, rather than uncontrolled trajectories.

• Which mechanism causes reduced longship stability when its cargo shifts during ocean travel?
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• Which navigational error arises using a sextant with index error during twilight observations?
• In pre-Columbian chinampa agriculture, which outcome occurred if the plant density became exceptionally high?
• Which long-term consequence occurred because of decreased soil aeration in chinampa agriculture?
• Which optical mechanism allowed Alhazen (Ibn al-Haytham) to experimentally demonstrate rectilinear propagation of light using pinhole setups?