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Even if the material is the same, the thick lens is stronger because strength increases when thickness increases. If you pull on the lens in its plane and it is twice as thick then it is twice as strong. If you push on the lens perpendicular to it and it is twice as thick then it is eight times stronger. This is strength of materials theory taken in college for engineering.

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14y ago
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6mo ago

Thicker lenses have a greater difference in curvature between the two surfaces, which causes light to bend more sharply and focus at a single point. This creates a stronger optical effect compared to thinner lenses with less curvature difference.

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Q: Why are thick lenses stronger than thinner ones?
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