Which property of medieval lenses caused spherical aberration and reduced image clarity in instruments utilizing them?

💡 Explanation

Curved surface geometry causes spherical aberration because light rays farther from the lens center focus at slightly different points, therefore blurring the image rather than producing a sharp focus; uniformity wouldn't cause this effect.

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• Which limitation influenced the design of an 18th-century naval sextant most profoundly?
• Which outcome resulted from the collapse of terrace walls in pre-Columbian Andean agriculture after El Niño events?
• During celestial navigation improvements in the Islamic Golden Age, which risk increased due to imperfections in astrolabe angle measurement?
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