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2. Fresnel lens - Wikipedia

   en.wikipedia.org/wiki/Fresnel_lens

   A Fresnel lens (/ ˈfreɪnɛl, - nəl / FRAY-nel, -⁠nəl; / ˈfrɛnɛl, - əl / FREN-el, -⁠əl; or / freɪˈnɛl / fray-NEL[ 1 ]) is a type of composite compact lens which reduces the amount of material required compared to a conventional lens by dividing the lens into a set of concentric annular sections.

3. Augustin-Jean Fresnel - Wikipedia

   en.wikipedia.org/wiki/Augustin-Jean_Fresnel

   École Polytech (1821–1824) Augustin-Jean Fresnel[ Note 1 ] (10 May 1788 – 14 July 1827) was a French civil engineer and physicist whose research in optics led to the almost unanimous acceptance of the wave theory of light, excluding any remnant of Newton 's corpuscular theory, from the late 1830s [ 3 ] until the end of the 19th century.

4. Dekle Beach, Florida - Wikipedia

   en.wikipedia.org/wiki/Dekle_Beach,_Florida

   Dekle Beach, Florida. Coordinates: 29°50′57″N 83°37′10″W. A summer sunset at Dekle Beach. Dekle Beach (/ ˈdiːkəl /; DEE-kəl[1][2]) is an unincorporated community on the gulf coast in the southern part of Taylor County, Florida, United States. Dekle Beach is located 21.8 miles (35.1 km) south of the county seat of Perry, at 29.8491 ...

5. Prism correction - Wikipedia

   en.wikipedia.org/wiki/Prism_correction

   Prism dioptres. Prism correction is commonly specified in prism dioptres, a unit of angular measurement that is loosely related to the dioptre. Prism dioptres are represented by the Greek symbol delta (Δ) in superscript. A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. [2]

6. List of lighthouses in Florida - Wikipedia

   en.wikipedia.org/wiki/List_of_lighthouses_in_Florida

   U.S. Coast Guard (USCG) (2012), "Light List Vol. III, Atlantic and Gulf Coasts". U.S. Government Printing Office, Washington D.C. "Historic Light Station Information and Photography: Florida". United States Coast Guard Historian's Office. Archived from the original on 2017-05-01; Florida Lighthouse Page". Web Archive.

7. Diplopia - Wikipedia

   en.wikipedia.org/wiki/Diplopia

   The provider may prescribe an eye patch to relieve the double vision. The patch can be removed after the nerve heals. Surgery or special glasses (prisms) may be advised if there is no recovery in 6 to 12 months. If diplopia turns out to be intractable, it can be managed as last resort by obscuring part of the patient's field of view.