http://lighthousegetaway.com/lights/fresnel.html Stolen from Culverin2, a look at the invention of lighthouse lenses. In 1822 a French Physicist named Augustin Fresnel invented a lens that would make his name commonplace along the seacoasts of Europe and North America. It looked like a giant glass beehive, with a light at the center. The lens could be as […]
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