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.

• Which increased risk exists when Roman concrete degrades?
• Which oversight would damage calculations using Inca quipu?
• Which outcome predictably occurred when the Byzantine Empire strategically gifted technically inferior clocks to rival states?
• Which outcome developed on ancient Roman roads when excessive seasonal temperature variations repeatedly stresses the concrete?
• Which error dominates sextant accuracy after thermal distortion?
• Which risk increases when excessive pressure is applied during Inca stone masonry?