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← HistoryWhich outcome occurs when tesserae debond from a mosaic?
A)Decreased structural load capacity results
B)Reflectance decreases across the panel✓
C)Mechanical vibration frequency decreases
D)Thermal expansion no longer matches
💡 Explanation
Debonding weakens light trapping via Fresnel's Law, leading to reduced panel reflectance, due to diffuse scattering rather than direct reflection. This is because refractive index change scatters light at angles, therefore, perceived brightness is diminished rather than vibration changes.
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