Which risk was encountered during Byzantine mosaic creation which required careful annealing of the glass tesserae?

💡 Explanation

The annealing process during mosaic creation was essential to reduce thermal gradients in the glass tesserae; therefore, controlled cooling decreased residual stresses that caused thermal shock fracturing rather than variations in refractive index.

• Which outcome followed from unstable naphtha storage by Byzantine naval arsenals accelerating Greek fire?
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• Which outcome would occur if Medieval Islamic astrolabes experienced significant thermal fluctuations?
• Which consequence accelerates corrosion in early cast iron cannons?
• Which consequence arises when mortar carbonation weakens limestone masonry?
• For efficient historical bronze casting, which action prevents brittle molds?