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Which problem arose when early astrolabes were constructed from wood?

A)Non-uniform thermal coefficient expansion
B)Susceptibility to rapid oxidation.
C)Poor magnetic shielding overall
D)Low acoustic propagation velocity

💡 Explanation

Differential expansion emerged because materials with different thermal coefficients expanded unevenly with temperature, leading to warpage and inaccurate angle readings; therefore non-uniform expansion represents the challenge, rather than negligible oxidation observed on the same object.

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