Which structural challenge did 18th-century shipbuilders overcome by implementing 'hogging trusses' during construction?

💡 Explanation

When a ship is supported at its ends by waves, hogging occurs because the bending moment causes the keel to deform upwards, increasing strain. Therefore hogging prevention results, rather than controlling sail dynamics or cannon recoil which require different mechanisms of reinforcement away from the keel.

• Which optical consequence affected early camera obscura image quality derived from a single, uncoated plano-convex lens?
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