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 limitation delayed wider adoption of cast iron components for early firearms despite gunpowder advancements in Song Dynasty China?
• Which long-term change in maize harvesting arises given widespread pre-Columbian chinampa agriculture employing minimal tillage?
• Which outcome directly results when chinampa agricultural systems experience prolonged seasonal flooding?
• Which limitation was apparent during the Han Dynasty mass production of cast iron tools?
• Which consequence results when Byzantine flamethrowers experience overpressure?
• Which risk increased for medieval stonemasons constructing Gothic cathedrals with increasingly large stained glass windows?