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← HistoryWhich accuracy limit appears when observing stars through a sextant on a wooden sailing ship?
A)Observer hand tremors on instrument
B)Thermal expansion affects mirror angles
C)Hull flexing alters sight line✓
D)Hygrometer precision degrades with humidity
💡 Explanation
The outcome is increased measurement error due to hull flexing affecting alignment because ship movement introduces small angular deviations during sightings via flex altering measurements, therefore accurate celestial navigation becomes inherently difficult, rather than issues from steadying the instrument.
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