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← HistoryWhich consequence resulted from thermal expansion during navigation when using early 18th-century brass sextants?
A)Inaccurate celestial angle measurements✓
B)Sextant mirror desilvered rapidly
C)Unreliable pendulum clock synchronization
D)Increased hull stress fractured timbers
💡 Explanation
Incorrect readings occurred because thermal expansion caused minute changes to the instrument's geometry; this is 'thermal distortion,' therefore inaccurate celestial angle measurements result, rather than mirror damage or issues with clocks, which are failures modes from different mechanisms.
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