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Dalén Light
A Dalén light is a light produced from burning of carbide gas (acetylene), combined with a solar sensor which automatically operates the light only during darkness. Overview The technology was the predominant form of light source in lighthouses from the 1900s through the 1960s, when electric lighting had become dominant. The system was invented by Gustaf Dalén and marketed by his company AGA. Dalén later invented the AGA cooker in 1922. The Dalén light is notable because of its sun valve (a.k.a. solar valve), which earned its inventor the Nobel prize in physics. The Carbide lamp was developed in the early 1900s. While the lamps proved useful in many applications, the problem of safely storing acetylene meant they needed regular refilling which constrained their use in applications such as lighthouses. Examples Lighthouses using Dalén lighting have included: * Barrenjoey Lighthouse, New South Wales (1932–1972) *Peninsula Point Light (1922–1936) Upper Peninsula Michigan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dalen Fyr 2007 L
Dalen (Dutch Low Saxon: ''Daoln'') is a village and a former municipality in the northeastern Netherlands, in the province of Drenthe. Since 1998, Dalen has been part of the municipality of Coevorden. The village was first mentioned in the 12th century as "in Dalon". The etymology is unclear. Dalen is an ''esdorp'' which developed in the Early Middle Ages along the road from Coevorden to Groningen. It contains two triangular village greens. The Dutch Reformed church is an aisleless church with a tower from the 15th century. The church was damaged during the Siege of Coevorden of 1813 and rebuilt in 1824. There are many shops and restaurants, bakeries and a pub called the D'aolle Bakkerij. The village is known for its two windmills, Jan Pol and De Bente, which are open to the public. There is a family resort from Center Parcs called 'De Huttenheugte' and next to the resort lies the theme park Plopsa Indoor. Dalen railway station has connections to Emmen and Coevorden/Zwolle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michigan
Michigan () is a state in the Great Lakes region of the upper Midwestern United States. With a population of nearly 10.12 million and an area of nearly , Michigan is the 10th-largest state by population, the 11th-largest by area, and the largest by area east of the Mississippi River.''i.e.'', including water that is part of state territory. Georgia is the largest state by land area alone east of the Mississippi and Michigan the second-largest. Its capital is Lansing, and its largest city is Detroit. Metro Detroit is among the nation's most populous and largest metropolitan economies. Its name derives from a gallicized variant of the original Ojibwe word (), meaning "large water" or "large lake". Michigan consists of two peninsulas. The Lower Peninsula resembles the shape of a mitten, and comprises a majority of the state's land area. The Upper Peninsula (often called "the U.P.") is separated from the Lower Peninsula by the Straits of Mackinac, a channel that joins Lak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synthetic Fuel Technologies
Synthetic things are composed of multiple parts, often with the implication that they are artificial. In particular, 'synthetic' may refer to: Science * Synthetic chemical or compound, produced by the process of chemical synthesis * Synthetic organic compounds synthetic chemical compounds based on carbon (organic compounds). * Synthetic peptide * Synthetic biology * Synthetic elements, chemical elements that are not naturally found on Earth and therefore have to be created in experiments Industry * Synthetic fuel * Synthetic oil * Synthetic marijuana * Synthetic diamond * Synthetic fibers, cloth or other material made from other substances than natural (animal, plant) materials Other * Synthetic position, a concept in finance * Synthetic-aperture radar, a type or radar * Analytic–synthetic distinction, in philosophy * Synthetic language in linguistics, inflected or agglutinative languages * Synthetic intelligence a term emphasizing that true intelligence expressed by c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Types Of Lamp
Type may refer to: Science and technology Computing * Typing, producing text via a keyboard, typewriter, etc. * Data type, collection of values used for computations. * File type * TYPE (DOS command), a command to display contents of a file. * Type (Unix), a command in POSIX shells that gives information about commands. * Type safety, the extent to which a programming language discourages or prevents type errors. * Type system, defines a programming language's response to data types. Mathematics * Type (model theory) * Type theory, basis for the study of type systems * Arity or type, the number of operands a function takes * Type, any proposition or set in the intuitionistic type theory * Type, of an entire function ** Exponential type Biology * Type (biology), which fixes a scientific name to a taxon * Dog type, categorization by use or function of domestic dogs Lettering * Type is a design concept for lettering used in typography which helped bring about modern textual printin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lighthouse Fixtures
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] |
Argentina
Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, the fourth-largest country in the Americas, and the eighth-largest country in the world. It shares the bulk of the Southern Cone with Chile to the west, and is also bordered by Bolivia and Paraguay to the north, Brazil to the northeast, Uruguay and the South Atlantic Ocean to the east, and the Drake Passage to the south. Argentina is a federal state subdivided into twenty-three provinces, and one autonomous city, which is the federal capital and largest city of the nation, Buenos Aires. The provinces and the capital have their own constitutions, but exist under a federal system. Argentina claims sovereignty over the Falkland Islands, South Georgia and the South Sandwich Islands, and a part of Antarctica. The earliest recorded human prese ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Recalada A Bahía Blanca Light
Recalada a Bahía Blanca Light, also known as Monte Hermoso Light or simply Recalada Light (lit. landfall), is an active lighthouse in Monte Hermoso, Buenos Aires Province, Argentina, marking the entrance to the Bahía Blanca. At a height of it is the eleventh-tallest "traditional lighthouse" in the world, as well as the tallest lighthouse in the Southern Hemisphere and the tallest lighthouse built of metal in the lattice tower configuration History The tower was prefabricated in France by the same company that built the Eiffel Tower. It was first lit on 1 January 1906. In 1928 a Dalén light was installed. The light was replaced with an electric light 1974. An Automatic Identification System (AIS) beacon was installed on 1 January 2006. Construction It consists of a central cylinder of iron, in diameter and eight cast-iron columns. There are a total of 331 steps. Visiting The light station is staffed and the tower is open to guided tours. See also * List of talle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hebrides
The Hebrides (; gd, Innse Gall, ; non, Suðreyjar, "southern isles") are an archipelago off the west coast of the Scottish mainland. The islands fall into two main groups, based on their proximity to the mainland: the Inner and Outer Hebrides. These islands have a long history of occupation (dating back to the Mesolithic period), and the culture of the inhabitants has been successively influenced by the cultures of Celtic-speaking, Norse-speaking, and English-speaking peoples. This diversity is reflected in the various names given to the islands, which are derived from the different languages that have been spoken there at various points in their history. The Hebrides are where much of Scottish Gaelic literature and Gaelic music has historically originated. Today, the economy of the islands is dependent on crofting, fishing, tourism, the oil industry, and renewable energy. The Hebrides have less biodiversity than mainland Scotland, but a significant number of seals an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skerryvore
Skerryvore (from the Gaelic ''An Sgeir Mhòr'' meaning "The Great Skerry") is a remote island that lies off the west coast of Scotland, southwest of Tiree. Skerryvore Lighthouse is located on these rocks, built with some difficulty between 1838 and 1844 by Alan Stevenson. At a height of it is the tallest lighthouse in Scotland."Historical Information" Northern Lighthouse Board. Retrieved 17 January 2008. The shore station was at Hynish on (which now houses the Skerryvore Lighthouse Museum); operations were later transferred to , west of |
Punta Sur
Punta Sur marks the southern point of Cozumel and is part of the Parque Punta Sur, a ecological park that covers the reefs, beaches, lagoons, and low forest of the surrounding area. The reef system is also part of the Arrecifes de Cozumel National Park. The Celarain lighthouse (''Faro de Celarain'') sits on the Punta Sur promontory (''Punta Celarain'') and is part of a nautical museum. Just northeast of it is the Caracol (''Tumba del Caracol''), a Maya building erected during the post-classic period. There is a persistent myth, often repeated by tour guides, that the building functioned as a weather alarm, producing a whistle that would precede the arrival of a hurricane, but that is only a legend. The idea that the building somehow functioned as a lighthouse or beacon used to send signals to the mainland is another legend, but also incorrect; it was a temple and nothing more. Some of the sandy beaches are protected to allow hatching for sea turtles. Observation towers hav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New South Wales
) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , established_date = Colony of New South Wales , established_title2 = Establishment , established_date2 = 26 January 1788 , established_title3 = Responsible government , established_date3 = 6 June 1856 , established_title4 = Federation , established_date4 = 1 January 1901 , named_for = Wales , demonym = , capital = Sydney , largest_city = capital , coordinates = , admin_center = 128 local government areas , admin_center_type = Administration , leader_title1 = Monarch , leader_name1 = Charles III , leader_title2 = Governor , leader_name2 = Margaret Beazley , leader_title3 = Premier , leader_name3 = Dominic Perrottet (Liberal) , national_representation = Parliament of Australia , national_representation_type1 = Senat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Point Stephens Light
The Point Stephens Light is a heritage-listed active lighthouse located on Point Stephens, a point on an unnamed headland at the east of Fingal Bay, south of the entrance of Port Stephens, New South Wales, Australia. The light serves to assist vessels entering Port Stephens. It is considered an endangered lighthouse due to remote location and old age. Proposed in 1857, the heritage-listed lighthouse was built in 1862. Designed by Alexander Dawson, the New South Wales Government Architect at that time, both the lighthouse's flared base and the keeper's cottages combined terrace are unique architectural features for the period. The light source used was originally kerosene lamps, which upgraded in 1912 to a Dalén light, upgraded again to electric light in 1960, automated in 1973, and finally converted to solar power in 1990. In 1991, the last caretaker withdrew from the premises and very soon after the keeper's cottages were vandalised and burned. The tower is designed in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
