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 ...

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 ...

May 31—NEWBURYPORT — The fourth order Fresnel lens, a guiding light and beloved piece at the Custom House Maritime Museum since the late 1970s, will soon return to its original home at Pomham Rocks ...

Joanne Baker enjoys a biography of the doughty French inventor of the bull's-eye lens, the secret of the modern lighthouse. Nineteenth-century French physicist Augustin Fresnel worked the physical ...

A lens manufactured in France in 1902 is shining high atop Montauk Point Lighthouse once again. Earlier this month the U.S. Coast Guard relit the clamshell-shaped Fresnel lens, which guided mariners ...

Before the invention of the high-powered LED, and even really before the widespread adoption of electric lights in general, lighthouses still had the obligation of warning ships of dangers while ...

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, ...

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, ...

The unique history of the Crooked River Lighthouse’s lens in Carrabelle, Florida. The Crooked River Lighthouse’s Executive Director, Steve Allen, shares with us ...

Luca, a Lucky Strike dangling from his lip and always wearing his helmet, is the leader, possibly a lieutenant. Kramer, in addition to a rifle, is laden with field radio, first-aid satchel and a huge ...