How has the Fresnel lens “saved a million ships”?

Lighthouses cast their bright beams out from where the land meets the sea, providing ships with a navigational marker, as well as warning them about
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Lighthouses cast their bright beams out from where the land meets the sea, providing ships with a navigational marker, as well as warning them about dangerous coastlines in the fog. Their signature beacons are made possible by a Fresnel lens surrounding a single lamp. The specially-designed glass lens was invented

Lens from the Hooper Straight Lighthouse Located in St. Michaels Maryland Presented in Black and White. Stock Image - Image of compact, lighthouse: 252276867

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The invention that saved a million ships

The Invention That Saved A Million Ships

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The Invention That Saved a Million Ships

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