Which consequence resulted when incompetent artisans in sixteenth-century Florence improperly prepared lapis lazuli for fine relief carvings in pietra dura?

💡 Explanation

Premature color shift occurred because improper washing created residual acid, which attacked the crystal lattice via acid hydrolysis; therefore the pigment degraded faster, rather than the mounting panel structure which has greater mechanical resistance.

• Which outcome occurred when cast iron crossbow triggers experienced repeated stress?
• Which consequence resulted from Byzantine navy fire ships nearing enemy vessels?
• Which risk increases when constructing dry stone walls in ancient Inca terraces using shale?
• Which outcome results from repeated casting processes exceeding initial bronze alloy composition limits?
• Within early cast iron cannon design, which outcome arose when gunpowder's rapid expansion exceeded a barrel's tensile strength?
• Which astronomical calculation was significantly improved by Al-Battani's use of trigonometry in the late 9th century?