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← ScienceWhich effect diminishes imaging sensitivity in astronomical interferometers?
A)Atmospheric turbulence causes phase decorrelation✓
B)Quantum entanglement degrades signal fidelity
C)Detector saturation creates signal clipping
D)Cosmic microwave background induces thermal noise
💡 Explanation
Atmospheric turbulence introduces random path length variations that cause phase decorrelation due to changing refractive indices; this reduces constructive interference. The fringes blur, rather than maintaining a stronger coherent signal, because wave fronts passing through different air pockets add up incoherently, thereby impeding resolution.
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