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During zenith distance calculation with Alhazen's camera obscura circa 1000 AD, which consequence occurred from light wavelength restrictions?

A)Chromatic aberration reduced image clarity
B)Vignetting obscured the image edges
C)Diffraction effects limited focal resolution
D)Astigmatism distorted peripheral ray tracing

💡 Explanation

Focal resolution degrades because diffraction, an intrinsic property of wave behavior, causes light waves to spread after passing through the pinhole. Resolution was improved with better lenses; therefore diffraction induced blur, rather than aberrations related to imperfection.

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