During Roman siege warfare, which consequence occurred when defenders heated sand and poured it down on attacking forces?

💡 Explanation

When heated sand was poured onto attackers, flash burns occurred because of the sand's high temperature and thermal mass. Therefore, attackers experienced severe burns, rather than asphyxiation which requires combustion, structural damage needing very high heat transfer, or blinding that needs intense light reflection.

• Which outcome occurs when iron is smelted using a bloomery furnace with insufficient air flow?
• Which benefit resulted from the development of nixtamalization by Mesoamerican civilizations for processing maize?
• Which navigational error increases most significantly due to fluctuations in 18th-century chronometer escapement?
• Which risk increases when improperly seasoned timber is used to construct wooden hulls in historical ships?
• Which mechanism caused increased hull deformation in early 18th-century warships after adopting internal iron bracing?
• Which optical effect, described by Ibn al-Haytham, explains image sharpness limitations in early camera obscura designs?