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← HistoryWhich effect limited the geodetic accuracy of early Islamic astrolabes constructed using brass at varying temperatures?
A)Parallax distortion from imprecise sighting
B)Material expansion causing scale inaccuracies✓
C)Cosmic ray interference with calibration
D)Magnetic field deviation altering alidade alignment
💡 Explanation
When brass astrolabes experienced temperature changes, thermal expansion caused dimensional changes compromising the accuracy of angular measurements using inscribed altitude and azimuth scales. Therefore material expansion causes scale inaccuracies, rather than parallax distortion, cosmic ray interference, or magnetic field influences which affect different aspects of measurement.
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