Fresnel Lens Point Arena Lighthouse

Title

Fresnel Lens Point Arena Lighthouse

Artist

Kathleen Bishop

Medium

Photograph - Photography

Description

Fine art photograph capturing rainbows refracting from sections of annular, concentric glass prisms on a 1st order Fresnel lens housed at Point Arena, California.

The Fresnel lens was invented by French Physicist Augustin Fresnel in 1822. He designed the center of the brass and glass construction to be shaped like a magnifying glass that produces a powerful beam, while concentric rings of prismatic glass above and below bend the light into a narrow, concentrated beacon that can be seen from aboard ships up to 25 nautical miles away.

This Fresnel lens was placed atop the 115 foot tower of Point Arena Lighthouse, the tallest lighthouse on the Pacific Coast, when the lighthouse tower was reconstructed in 1908 following the collapse of the previous lighthouse during the famous 1906 San Francisco earthquake.

The lens weighs more than 6 tons and is over 6 feet in diameter but was successfully dismantled and removed from the tower in 2008 then cleaned and reassembled in the Point Arena Lighthouse museum in Mendocino County, California.

This prismatic capture of the historic Fresnel lens at the Point Arena Lighthouse is being offered on a variety of designer products, including designer face masks!
All products carry a 30 day money-back guarantee. ©Kathleen Bishop. kathleen-bishop.pixels.com. All Rights Reserved.

Uploaded

January 4th, 2016

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