Fresnel lenses were invented over two centuries ago to help lighthouses prevent shipwrecks. They're still enhancing safety, ...

LAKE COUNTY, Minn. — A full-sized replica of Split Rock Lighthouse's third-order Fresnel lens — like the one that occasionally casts its beam out over Lake Superior — is among the highlights of the ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. In the early nineteenth century, ...

PORT TOWNSEND — The United States Lighthouse Society will host an event Saturday to celebrate the restoration of Point Wilson’s historic 1879 Fresnel lens. The light from the Fresnel lens is replacing ...

A steady stream of people visited Barnegat Lighthouse Sunday. There was still quite a chill in the air — despite the warmth of the sun it was still in the mid-30s — and to many it seemed a great ...

When the Yaquina Head Lighthouse was lit for the first time in 1873, its purpose was to let mariners know where they were – a milepost of sorts at sea. Today, thanks to technology, a tower of light is ...