Lighthouses

~ Bodie Island ~ by: Stephen Harington

Lime Kiln Lighthouse (San Juan Island, Washington)-Photography by Terry Donnelly
Bass Harbor Head Lighthouse (Bass Harbor, Maine)-Photography by Al Keuning
Barnegat Lighthouse (Long Beach Island, New Jersey)-Photography by Joe Gorman
New London Lighthouse (Prince Edward Island, Canada)-Photography by Ken Straiton
Brant Point Lighthouse (Nantucket Island, Massachusetts)-Photography by Townsend Dickinson/Comstock
Beagle Canal Lighthouse (Tierra del Fuego, Argentina)-Photography by Jose' Fuste Raga (The Stock Market)
Pigeon Point Lighthouse (Pescadero, California)-Photography by Doug Allen (Nature Graphix)
Cape Hatteras Lighthouse (Barrier Island, North Carolina)-Photography by Tom Till
Bete Grise Lighthouse (Lake Superior, Michigan)-Photography by Willard Clay
East Quaddy Head Lighthouse (Campobello Island, Canada)-Photography by Townsend Dickinson/Comstock
Portland Head Lighthouse (Cape Elizabeth, Maine)-Photography by Randall L. Schieber
Nubble Lighthouse (York, Maine)-Photography by Thomas H. Mitchell

~ @ ShocktheMonkey '98 ~

A Fresnel lens consists of separate, hand-polished prisms fitted into a metal fram. The prisms gather light, focusing it into a concentrated beam. Invented by French physicist Augustin Fresnel in 1822, a Frsnel would be manufactured in Paris, shipped across the Atlantic in pieces, and painstakingly reassembled inside a lantern room. Fresnels came in a variety of sizes, or "orders," ranging from sixth-order (about seventeen inches high and a foot wide) to first-order (as much as ten feet high and six feet wide).....~Photograph by Bruce Roberts~

Thanks for the gif Raine!