Which mechanism diminishes the structural integrity of Byzantine mosaics most rapidly at high altitude?

💡 Explanation

Ice lens formation causes microfractures because water penetration followed by freezing expands, creating pressure. This cracking degrades the mosaic over time, therefore altitude mosaics suffer specifically from freeze-thaw, rather than corrosion-based decay at sea level.

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• Which consequence resulted from imperfections in medieval lens grinding used in devices attempting vision correction?
• Which risk increases when historical ropewalks cannot maintain consistent tension during twisting strands?
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