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← ScienceWhich timing error increases because of gravitational redshift?
A)Inter-satellite link calibration offset✓
B)Atomic clock crystal oscillation instability
C)Temperature-induced frequency drift
D)Signal transit time variation
💡 Explanation
Gravitational redshift causes frequency shifts based on gravitational potential, therefore GPS satellite atomic clocks appear to tick faster than ground-based clocks. This is a core aspect of the principle of equivalence, thus the inter-satellite link offset increases, rather than internal drift within an individual clock.
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