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← HistoryWhich mechanism degraded astronomical readings when brass Medieval astrolabes underwent differential expansion?
A)Eccentricity reduced parallelism accuracy
B)Limb divisions induced periodic parallax
C)Alidade flutter caused spurious observations
D)Plate misalignment distorted altitude readings✓
💡 Explanation
Plate misalignment warped readings on astrolabes because differential thermal expansion affected the alignment of the plates, rather than altering intrinsic geometric properties. Therefore, readings suffered accuracy errors because of component interactions rather than optical effects.
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