For accurate time-keeping outdoors using a medieval astrolabe, which outcome occurs under prolonged direct sunlight exposure?

💡 Explanation

In direct sunlight, Differential thermal expansion of the metal causes scale inaccuracy. Because coefficients of expansion vary, scale markings shift relative to each other, therefore the displayed time is inaccurate, rather than lens effects or oxidation which are secondary here.

• Which outcome arose when the inclined plane's design limitations hindered lift in Archimedes' screw pumps irrigating early Mughal gardens?
• Which result occurred when Roman siege engines surpassed fortification designs?
• Which outcome was accelerated during the Bronze Age in Mesopotamia when dissimilar bronze alloys contacted in moist soil?
• Which limiting outcome results from non-uniform iron crystallization during ancient crossbow trigger casting?
• Which outcome arises when water freezes inside cracks within ancient stone aqueducts?
• Which risk increases when Roman road construction deviates substantially from standard practice?