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, ...

Lighthouses are far more than tall towers with bright bulbs, they are precision optical systems designed to push light across the horizon. This breaks down how Fresnel lenses concentrate beams, why ...

If you are a Hackaday reader, you probably know what a Fresnel lens is. You find them in everything from overhead projectors to VR headsets. While it seems commonplace now, the Fresnel lens was an ...

PORT TOWNSEND — Point Wilson Lighthouse is lit once again with its original 1879 Fresnel lens. Out of commission for decades, the historic lens was relit on Oct. 29. “Relighting this historic optic is ...

The popular French lens design was originally created for lighthouses The popular French lens design was originally created for lighthouses is a senior editor and founding member of The Verge who ...

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 ...

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 ...

The most important thing to know about Fresnel lenses, before casually attempting to drop them into conversation, has to do with phonetics: "Fresnel" is pronounced "Fruh-NEL." If the silent "S" makes ...

1859: The second lighthouse at Cape Lookout, North Carolina, is lit for the first time. Cape Lookout is situated along the Outer Banks, a treacherous stretch of coastal shoals and storm-tossed seas ...