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Roanoke Marshes Light
Roanoke Marshes Light was a screw-pile lighthouse in North Carolina. History Little is recorded about this light, which was replaced in 1955 with an automated light on a shorter tower. It marks the south entrance to the channel through Croatan Sound, to the east of a marshy shoal extending from the western shore. This places it in the deepest bottom in the area. There was a predecessor light on this site, beginning in 1857. The pictured light, of conventional screw-pile construction, was lit in 1877. When the light was decommissioned, an unsuccessful attempt was made by a private party to move it, but the house was lost in the sound. In 2004, a replica of the light was dedicated at the Roanoke Island Maritime Museum in Manteo, North Carolina Manteo () is a town in Dare County, North Carolina, United States, located on Roanoke Island. The population was 1,602 at the 2020 census. It is the county seat of Dare County. Geography Manteo is located at (35.904595, -75.669385), on t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Screw-pile Lighthouse
A screw-pile lighthouse is a lighthouse which stands on piles that are screwed into sandy or muddy sea or river bottoms. The first screw-pile lighthouse to begin construction was built by the blind Irish engineer Alexander Mitchell. Construction began in 1838 at the mouth of the Thames and was known as the Maplin Sands lighthouse, and first lit in 1841. However, though its construction began later, the Wyre Light in Fleetwood, Lancashire, was the first to be lit (in 1840). In the United States, several screw-pile lighthouses were constructed in the Chesapeake Bay due to its estuarial soft bottom. North Carolina's sounds and river entrances also once had many screw-pile lights. The characteristic design is a -storey hexagonal wooden building with dormers and a cupola light room. History Non-screwpile (straightpile) tubular skeletal tower lighthouses were built, usually of cast-iron but also of wrought-iron piles, both onshore and offshore, typically on soft bottoms such as m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cast-iron
Cast iron is a class of iron–carbon alloys with a carbon content more than 2%. Its usefulness derives from its relatively low melting temperature. The alloy constituents affect its color when fractured: white cast iron has carbide impurities which allow cracks to pass straight through, grey cast iron has graphite flakes which deflect a passing crack and initiate countless new cracks as the material breaks, and ductile cast iron has spherical graphite "nodules" which stop the crack from further progressing. Carbon (C), ranging from 1.8 to 4 wt%, and silicon (Si), 1–3 wt%, are the main alloying elements of cast iron. Iron alloys with lower carbon content are known as steel. Cast iron tends to be brittle, except for malleable cast irons. With its relatively low melting point, good fluidity, castability, excellent machinability, resistance to deformation and wear resistance, cast irons have become an engineering material with a wide range of applications and are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wood
Wood is a porous and fibrous structural tissue found in the stems and roots of trees and other woody plants. It is an organic materiala natural composite of cellulose fibers that are strong in tension and embedded in a matrix of lignin that resists compression. Wood is sometimes defined as only the secondary xylem in the stems of trees, or it is defined more broadly to include the same type of tissue elsewhere such as in the roots of trees or shrubs. In a living tree it performs a support function, enabling woody plants to grow large or to stand up by themselves. It also conveys water and nutrients between the leaves, other growing tissues, and the roots. Wood may also refer to other plant materials with comparable properties, and to material engineered from wood, or woodchips or fiber. Wood has been used for thousands of years for fuel, as a construction material, for making tools and weapons, furniture and paper. More recently it emerged as a feedstock for the productio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fresnel Lens
A Fresnel lens ( ; ; or ) is a type of composite compact lens developed by the French physicist Augustin-Jean Fresnel (1788–1827) for use in lighthouses. It has been called "the invention that saved a million ships." 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 design. A Fresnel lens can be made much thinner than a comparable conventional lens, in some cases taking the form of a flat sheet. The simpler dioptric (purely refractive) form of the lens was first proposed by Count Buffon and independently reinvented by Fresnel. The ''catadioptric'' form of the lens, entirely invented by Fresnel, has outer elements that use total internal reflection as well as refraction; it can capture more oblique light from a light source and add it to the beam of a lighthouse, making the light visible from greater distances. Description The Fresnel lens redu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lighthouse
A lighthouse is a tower, building, or other type of physical structure designed to emit light from a system of lamps and lenses and to serve as a beacon for navigational aid, for maritime pilots at sea or on inland waterways. Lighthouses mark dangerous coastlines, hazardous shoals, reefs, rocks, and safe entries to harbors; they also assist in aerial navigation. Once widely used, the number of operational lighthouses has declined due to the expense of maintenance and has become uneconomical since the advent of much cheaper, more sophisticated and effective electronic navigational systems. History Ancient lighthouses Before the development of clearly defined ports, mariners were guided by fires built on hilltops. Since elevating the fire would improve the visibility, placing the fire on a platform became a practice that led to the development of the lighthouse. In antiquity, the lighthouse functioned more as an entrance marker to ports than as a warning signal for reefs a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Carolina
North Carolina () is a state in the Southeastern region of the United States. The state is the 28th largest and 9th-most populous of the United States. It is bordered by Virginia to the north, the Atlantic Ocean to the east, Georgia and South Carolina to the south, and Tennessee to the west. In the 2020 census, the state had a population of 10,439,388. Raleigh is the state's capital and Charlotte is its largest city. The Charlotte metropolitan area, with a population of 2,595,027 in 2020, is the most-populous metropolitan area in North Carolina, the 21st-most populous in the United States, and the largest banking center in the nation after New York City. The Raleigh-Durham-Cary combined statistical area is the second-largest metropolitan area in the state and 32nd-most populous in the United States, with a population of 2,043,867 in 2020, and is home to the largest research park in the United States, Research Triangle Park. The earliest evidence of human occupation i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Croatan Sound
Croatan Sound is an inlet in Dare County, North Carolina. It connects Pamlico Sound with Albemarle Sound, and is bordered to the east by Roanoke Island; Roanoke Sound is on the other side of the island. Its name comes from the Croatan Indians who once inhabited the area. The Croatan Sound is crossed by two bridges, the older William B. Umstead Bridge, and the newer Virginia Dare Memorial Bridge, which carries U.S. Route 64 U.S. Route 64 (US 64) is an east–west United States highway that runs for 2,326 miles (3,743 km) from Nags Head in eastern North Carolina to just southwest of the Four Corners in northeast Arizona. The western terminus is at U.S. Route 1 .... External links Bodies of water of Dare County, North Carolina Sounds of North Carolina {{DareCountyNC-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roanoke Island Maritime Museum
Roanoke may refer to: Places *Roanoke Colony, a former English colony that mysteriously disappeared *Roanoke Island, the location of the Roanoke colony in present-day North Carolina *Roanoke River, flowing through Virginia and North Carolina and emptying into Albemarle Sound near Roanoke Island *Roanoke Valley, part of the Great Appalachian Valley near the headwaters of the Roanoke River in Virginia *Roanoke, Alabama *Roanoke, Georgia *Roanoke, Illinois *Roanoke, Indiana *Roanoke, Louisiana *Roanoke, Missouri *Roanoke, Texas *Roanoke, Virginia, the largest US city named Roanoke *Roanoke County, Virginia *Roanoke, West Virginia *Roanoke Rapids, North Carolina *Randolph, Virginia, formerly called Roanoke Other uses *Roanoke tribe, a Carolina Algonquian-speaking tribe in western North Carolina *Roanoke Park (Seattle), a park in Seattle, Washington * USS ''Roanoke'', various USN vessels named Roanoke * ''Roanoke'' (ship), an American ship (1892–1905) *Roanoke College, a private liber ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manteo, North Carolina
Manteo () is a town in Dare County, North Carolina, United States, located on Roanoke Island. The population was 1,602 at the 2020 census. It is the county seat of Dare County. Geography Manteo is located at (35.904595, -75.669385), on the north central area of Roanoke Island. It is located off the exit at the South 16 mile post on US Hwy 158 at Whalebone Junction, the junction of NC Highways 158, 64, and 12, known as the Beach Road. According to the United States Census Bureau, the town has a total area of , of which is land and , or 3.09%, is water. History The town is named for an American Indian named Manteo, who was of the Croatans tribe of American Indians. Manteo traveled with the English to London in 1584 where he and another Indian, Wanchese, learned to become the liaisons between the Roanoke Colony settlers and the Indians. He also had favorable interaction with British colonist John White. In fact, Manteo was christened and given the name Lord of Roanoke, making ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lighthouses Completed In 1877
A lighthouse is a tower, building, or other type of physical structure designed to emit light from a system of lamps and lenses and to serve as a beacon for navigational aid, for maritime pilots at sea or on inland waterways. Lighthouses mark dangerous coastlines, hazardous shoals, reefs, rocks, and safe entries to harbors; they also assist in aerial navigation. Once widely used, the number of operational lighthouses has declined due to the expense of maintenance and has become uneconomical since the advent of much cheaper, more sophisticated and effective electronic navigational systems. History Ancient lighthouses Before the development of clearly defined ports, mariners were guided by fires built on hilltops. Since elevating the fire would improve the visibility, placing the fire on a platform became a practice that led to the development of the lighthouse. In antiquity, the lighthouse functioned more as an entrance marker to ports than as a warning signal for reefs and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Houses Completed In 1877
A house is a single-unit residential building. It may range in complexity from a rudimentary hut to a complex structure of wood, masonry, concrete or other material, outfitted with plumbing, electrical, and heating, ventilation, and air conditioning systems.Schoenauer, Norbert (2000). ''6,000 Years of Housing'' (rev. ed.) (New York: W.W. Norton & Company). Houses use a range of different roofing systems to keep precipitation such as rain from getting into the dwelling space. Houses may have doors or locks to secure the dwelling space and protect its inhabitants and contents from burglars or other trespassers. Most conventional modern houses in Western cultures will contain one or more bedrooms and bathrooms, a kitchen or cooking area, and a living room. A house may have a separate dining room, or the eating area may be integrated into another room. Some large houses in North America have a recreation room. In traditional agriculture-oriented societies, domestic animals such as c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lighthouses Completed In 1857
A lighthouse is a tower, building, or other type of physical structure designed to emit light from a system of lamps and lenses and to serve as a beacon for navigational aid, for maritime pilots at sea or on inland waterways. Lighthouses mark dangerous coastlines, hazardous shoals, reefs, rocks, and safe entries to harbors; they also assist in aerial navigation. Once widely used, the number of operational lighthouses has declined due to the expense of maintenance and has become uneconomical since the advent of much cheaper, more sophisticated and effective electronic navigational systems. History Ancient lighthouses Before the development of clearly defined ports, mariners were guided by fires built on hilltops. Since elevating the fire would improve the visibility, placing the fire on a platform became a practice that led to the development of the lighthouse. In antiquity, the lighthouse functioned more as an entrance marker to ports than as a warning signal for re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
