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A scale model Fresnel lens is displayed at the Pensacola Lighthouse and museum, Oct. 27, 2019, in Pensacola, Florida. The lighthouse, which was built in 1858, is 150 feet tall and features 177 steps. It features a first-order Fresnel lens which can be seen from a distance of 27 nautical miles. It is still in operation, with more than 130,000 people per year touring the lighthouse and museum. It is listed on the National Register of Historic Places. (Photo by Carmen K. Sisson/Cloudybright)
Copyright
2019 Carmen K. Sisson/Cloudybright
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3207x4843 / 44.5MB
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Pensacola Lighthouse
A scale model Fresnel lens is displayed at the Pensacola Lighthouse and museum, Oct. 27, 2019, in Pensacola, Florida. The lighthouse, which was built in 1858, is 150 feet tall and features 177 steps. It features a first-order Fresnel lens which can be seen from a distance of 27 nautical miles. It is still in operation, with more than 130,000 people per year touring the lighthouse and museum. It is listed on the National Register of Historic Places. (Photo by Carmen K. Sisson/Cloudybright)