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← HistoryWhich limitation arises when using a brass Islamic astrolabe for astronomical observations in sub-zero temperatures?
A)Accuracy declines from thermal contraction✓
B)Corrosion accelerates from ice formation
C)Engravings fade due to sublimation
D)Alidade seizes due to metal expansion
💡 Explanation
When the temperature drops, the brass of the astrolabe undergoes thermal contraction because metals change dimensions with temperature swings, altering its calibrated scales. Therefore observational accuracy degrades, rather than corrosion, fading, or seizing which demand specific electrochemical or mechanical constraints not determined by material properties at low temperatures alone.
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