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Unmanned Reef Lights Of The Florida Keys
The unmanned reef lights of the Florida Keys were navigational aids erected near the Florida Keys between 1921 and 1935. Overview The unmanned reef lights were intended to mark local hazards and did not need to be visible for as far as the reef lights that were erected near the Keys during the 19th century. By the time the lights in this list were erected, older lighthouses were being automated, and these new lights were designed to be automated from the start. The lights resembled the older reef lights in having a wrought iron skeletal pyramidal structure on a screw-pile foundation. They all originally had lanterns on their peaks, so that they looked like smaller versions of the older reef lights, but had no keeper's quarters. The first two unmanned lights in the Florida Keys, the Molasses Reef Light and the Pacific Reef Light, were built as square pyramidal towers to the same plan in 1921. The Hen and Chickens Shoal Light was the smallest of these lights, and the only one bui ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Fresnel Lens
A Fresnel lens ( ; ; or ) is a type of composite compact lens (optics), lens which reduces the amount of material required compared to a conventional lens by dividing the lens into a set of concentric annular sections. The simpler Dioptrics, dioptric (purely refraction, refractive) form of the lens was first proposed by Georges-Louis Leclerc, Comte de Buffon, and independently reinvented by the French physicist Augustin-Jean Fresnel (1788–1827) for use in lighthouses. The Catadioptric system, catadioptric (combining refraction and reflection) form of the lens, entirely invented by Fresnel, has outer Prism (optics), prismatic elements that use total internal reflection as well as refraction to capture more oblique light from the light source and add it to the beam, making it visible at greater distances. The design allows the construction of lenses of large aperture and short focal length without the mass and volume of material that would be required by a lens of conventional ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Marquesas Keys
The Marquesas Keys form an uninhabited island group about west of Key West, in diameter, and largely covered by mangrove forest. They are an unincorporated area of Monroe County, Florida and belong to the Lower Keys Census County Division. They are protected as part of the Key West National Wildlife Refuge. The Marquesas were used for target practice by the military as recently as 1980. Overview The total area, including the lagoon, measures . The land area, according to the United States Census Bureau, is (exactly 6,579,703 m2), the water area (165,744 m2), giving a combined area of , not counting water areas with connection to the open sea, but including small landlocked lakes on the Keys. The group is located at coordinates . The islands are part of the Florida Keys, separated from the rest of the Florida Keys, which are farther east, by the Boca Grande Channel, which is wide until Boca Grande Key, the westernmost of the Mule Keys. Only the Dry Tortugas are farther ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Long Key
Long Key is an island in the middle Florida Keys. Long Key was called Cayo Víbora (Rattlesnake Key) by early Spanish explorers, a reference to the shape of the island, which resembles a snake with its jaws open, rather than to its denizens. The city of Layton is located on Long Key. The state park (3.9 km2) was dedicated October 1, 1969. U.S. 1 (or the Overseas Highway) crosses the key at approximately mile markers 65.5--71, between Fiesta Key and Conch Key. It is the home of Long Key State Park, a favorite of campers and nature lovers, the camp sites are on the beach but the proximity of US1 makes it noisy. It is smaller and less developed than the neighboring incorporated village of Islamorada to the northeast and city of Marathon to the southwest. History It was visited by C.W. Pierce in his boat, Bonton (1885). He stopped at the lower end of the key where there was a house with a cistern and replenished his water supply. The key was a depot site during the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Key West
Key West is an island in the Straits of Florida, at the southern end of the U.S. state of Florida. Together with all or parts of the separate islands of Dredgers Key, Fleming Key, Sunset Key, and the northern part of Stock Island, it constitutes the City of Key West. The island of Key West is about long and wide, with a total land area of . Within Florida, it is southwest of Miami by air, about by road. Key West is approximately north of Cuba at their closest points, and north-northeast of Havana. The city of Key West is the county seat of Monroe County, which includes a majority of the Florida Keys and part of the Everglades. The total land area of the city is . The population within the city limits was 26,444 at the 2020 census. The official city motto is "One Human Family". Key West is the southernmost city in the contiguous United States and the westernmost island connected by highway in the Florida Keys. Duval Street, its main street, is in length in it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Plantation Key
Plantation Key is an island in Monroe County, Florida, United States. It is located in the upper Florida Keys on U.S. 1 (or the Overseas Highway), between Key Largo and Windley Key. All of the key is within the Village of Islamorada as of November 4, 1997, when it was incorporated. Geography Plantation Key is located at . It is separated from Key Largo by Tavernier Creek (Mile Marker 91.0) at its Northeast end, and from Windley Key by Snake Creek (Mile Marker 85.5) at its Southwest end. History Plantation Key was inhabited by Native Americans at least 1,000 years before European contact with the Americas. A large mound was formerly located towards the northeastern end of the key. Artifacts removed from the mound were dated to A.D. 500 to 700. The mound was leveled in 1958 to allow development of a real estate subdivision. Immigrants from the Bahamas began settling on Plantation Key in the middle of the 19th century. Two families were recorded on the key in the 1870 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Islamorada, Florida
Islamorada (also sometimes Isla Morada) is an Incorporation (municipal government), incorporated village in Monroe County, Florida, United States. It is located directly between Miami and Key West on five islands—Tea Table Key, Lower Matecumbe Key, Upper Matecumbe Key, Windley Key, and Plantation Key—in the Florida Keys. As of the 2020 United States census, 2020 census, the village had a population of 7,107, up from 6,119 in 2010. History The name "Islamorada" (), spelled ''isla morada'' in Spanish, "purple island", came from early Spanish list of explorers, explorers in the area. Islamorada was the location of one of the stations of the Overseas Railroad. Islamorada was hit almost directly by the Labor Day Hurricane of 1935, causing 423 deaths. A memorial, including the ashes of over 300 victims, exists today at Overseas Highway, mile marker 82. Baseball player Ted Williams began visiting Islamorada in 1943, and for the next 45 years, he was the island's most well-known r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Elliott Key
Elliott Key is the northernmost of the true Florida Keys (those 'keys' which are ancient coral reefs lifted above the present sea level), and the largest key north of Key Largo. It is located entirely within Biscayne National Park, in Miami-Dade County, Florida, east of Homestead, Florida. It is bordered by the Atlantic Ocean to the east, Biscayne Bay to the west, Sands Key (across Sands Cut) to the north, and Old Rhodes Key (across Caesar Creek) to the south. Adams Key is just west of the southern end of Elliott Key. Elliott Key is about long. Its maximum width is about near the north end, and its average width is less than . The higher elevations on the island range from above sea level and occur generally along an unimproved road that runs longitudinally through the center of the island. The average elevation is about above sea level. The key is accessible only by boat. Elliott Key has a National Park Service campground, but is otherwise uninhabited. History Elliott Key w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Flashing Light
A light characteristic is all of the properties that make a particular somewhat navigational light identifiable. Graphical and textual descriptions of navigational light sequences and colours are displayed on nautical charts and in Light Lists with the chart symbol for a lighthouse, lightvessel, buoy or sea mark with a light on it. Different lights use different colours, frequencies and light patterns, so mariners can identify which light they are seeing. Abbreviations While light characteristics can be described in prose, e.g. "Flashing white every two seconds", lists of lights and navigation chart annotations use abbreviations. The abbreviation notation is slightly different from one light list to another, with dots added or removed, but it usually follows a pattern similar to the following (see the chart to the right for examples). * An abbreviation of the type of light, e.g. "Fl." for Flashing, "F." for Fixed. * The color of the light, e.g. "W" for White, "G" for Green, "R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
