Which distortion increases when a medieval convex lens deviates from ideal sphericity?

💡 Explanation

Significant spherical aberration arises because different zones of imperfect convex shapes focus incident rays imperfectly; therefore, image crispness decays rather than forming a point focus, causing blurred views, and the effect increases with deviations from perfect form.

• Which mechanism contributed to more effective late-Ming cast iron cannons, improving range?
• Which outcome occurred when early lens grinders polished uneven surfaces?
• Which consequence resulted from the extensive undercutting during a Roman siege?
• Which obstacle complicated large-scale bronze axe production during the Early Bronze Age Mesopotamian Uruk period?
• Which risk increases when pre-Columbian terracing lacks sufficient drainage?
• Which phenomenon limited the angular expansion observable through early microscope designs (c. 1600s)?