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Store Torungen
Store Torungen Lighthouse ( no, Store Torungen fyrstasjon) is a coastal lighthouse on the island of Store Torungen in the municipality of Arendal in Agder county, Norway. This lighthouse, together with the nearby Lille Torungen Lighthouse, mark the entrance from the Skaggerak through the outlying islands to the mainland town of Arendal. Both lighthouses were built in 1844 with the same specifications, making "twin" lighthouses marking the way to Arendal. The two lighthouses were put on the coat-of-arms for the local municipality of Hisøy in which the lighthouses were located. Over time, both lighthouses were replaced, and the only one still standing is the Lille Torungen Lighthouse, although it is no longer in use. The site of the Store Torungen Lighthouse is accessible only by boat. The island and site is open to the public, the tower is open daily during the summers, and the lighthouse keepers house is available to rent for overnight accommodations. Current lighthouse The pres ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coastal 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 and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hisøy
Hisøy (historically: ''Hisø'') is a former municipality in the old Aust-Agder county in Norway. The municipality existed from 1881 until 1992 when it was merged into the municipality of Arendal in what is now Agder county. At the time of its dissolution, it was the smallest municipality in the whole county. The municipality encompassed the islands of Hisøya, Gjervoldsøy, Havsøya, Ærøya, Store Torungen, Lille Torungen, and several other small, unpopulated islands. The administrative centre was the village of Kolbjørnsvik on Hisøya island. Hisøy Church was the main church for the municipality, located in the village of His in the central part of Hisøya. History The municipality of ''Hisø'' was created on 1 January 1881 when the municipality of Øyestad was split into Øyestad (population: 4,474) and Hisø (population: 2,652). On 1 January 1992, there was a major municipal merger involving Hisøy. The municipalities of Hisøy (population: 4,026), Tromøy (populat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Lighthouses In Norway ...
The following is a sortable, but partial list of active and some decommissioned lighthouses along the Norwegian coastline. The sequence number follows the convention of listing lighthouses from the coastal border in the south with Sweden around the coast and north to coastal border with Russia. Lighthouses See also * Lists of lighthouses and lightvessels * Lighthouses in Norway References * External links * {{Lighthouses in Europe Norway * Lighthouses Lighthouses 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 mar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lighthouses In Norway
The coast of Norway is 100,915 km long and there have been a total of 212 lighthouses along it, but no more than 154 have ever been operational at the same time. The first, Lindesnes Lighthouse, opened in 1655; the newest Lighthouse, Anda, was finished in 1932. The first Lighthouses were private operations, but in 1821 the government made the Channel and Harbor Inspector responsible for Lighthouses in Norway. A dedicated Lighthouse Administration was set up in 1841. The Lighthouses are today mostly automated and since 1974, run by the Norwegian Coastal Administration. Two lightvessels had been operated along the Norwegian coast. "Enigheden" off Ålesund from 1856 vas replaced with Lepsøyrev Lighthouse in 1879, and "Ildjernsflu" moored off Nesodden from 1914 until it was scrapped in 1968. This list, while not complete, is sorted by location along the shipping lane from the border with Sweden in the south to Russia in the northeast. The Norwegian Coastal Administration main ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morse Code
Morse code is a method used in telecommunication to encode text characters as standardized sequences of two different signal durations, called ''dots'' and ''dashes'', or ''dits'' and ''dahs''. Morse code is named after Samuel Morse, one of the inventors of the telegraph. International Morse code encodes the 26 basic Latin letters through , one accented Latin letter (), the Arabic numerals, and a small set of punctuation and procedural signals ( prosigns). There is no distinction between upper and lower case letters. Each Morse code symbol is formed by a sequence of ''dits'' and ''dahs''. The ''dit'' duration is the basic unit of time measurement in Morse code transmission. The duration of a ''dah'' is three times the duration of a ''dit''. Each ''dit'' or ''dah'' within an encoded character is followed by a period of signal absence, called a ''space'', equal to the ''dit'' duration. The letters of a word are separated by a space of duration equal to three ''dits'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Racon
Radar beacon (short: racon) is – according to ''article 1.103'' of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR) – defined as "A transmitter-receiver associated with a fixed navigational mark which, when triggered by a radar, automatically returns a distinctive signal which can appear on the display of the triggering radar, providing range, bearing and identification information." Each ''station'' (transmitter-receiver, transceiver or transponder) shall be classified by the ''service'' in which it operates permanently or temporarily. Principle of operation When a racon receives a radar pulse, it responds with a signal on the same frequency which puts an image on the radar display. This takes the form of a short line of dots and dashes forming a Morse character radiating away from the location of the beacon on the normal plan position indicator radar display. The length of the line usually corresponds to the equivalent of a few nautical miles ... [...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] |
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] |
Coat-of-arms
A coat of arms is a heraldic visual design on an escutcheon (i.e., shield), surcoat, or tabard (the latter two being outer garments). The coat of arms on an escutcheon forms the central element of the full heraldic achievement, which in its whole consists of a shield, supporters, a crest, and a motto. A coat of arms is traditionally unique to an individual person, family, state, organization, school or corporation. The term itself of 'coat of arms' describing in modern times just the heraldic design, originates from the description of the entire medieval chainmail 'surcoat' garment used in combat or preparation for the latter. Rolls of arms are collections of many coats of arms, and since the early Modern Age centuries, they have been a source of information for public showing and tracing the membership of a noble family, and therefore its genealogy across time. History Heraldic designs came into general use among European nobility in the 12th century. Systematic, he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Store Torungen
Store Torungen Lighthouse ( no, Store Torungen fyrstasjon) is a coastal lighthouse on the island of Store Torungen in the municipality of Arendal in Agder county, Norway. This lighthouse, together with the nearby Lille Torungen Lighthouse, mark the entrance from the Skaggerak through the outlying islands to the mainland town of Arendal. Both lighthouses were built in 1844 with the same specifications, making "twin" lighthouses marking the way to Arendal. The two lighthouses were put on the coat-of-arms for the local municipality of Hisøy in which the lighthouses were located. Over time, both lighthouses were replaced, and the only one still standing is the Lille Torungen Lighthouse, although it is no longer in use. The site of the Store Torungen Lighthouse is accessible only by boat. The island and site is open to the public, the tower is open daily during the summers, and the lighthouse keepers house is available to rent for overnight accommodations. Current lighthouse The pres ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arendal (town)
Arendal () is a city in Agder county, Norway. The city is the administrative centre of the municipality of Arendal and the seat of the County Governor of Agder. The city also includes a small area in the neighbouring municipality of Grimstad as well. In Norway, Arendal is considered a which can be translated as either a "town" or "city" in English. The city has a population (2019) of 37,815 and a population density of . The city does cross municipal boundaries due to its growth over the years. In 2019, of the city with 112 residents were located in neighbouring Grimstad municipality. This area was mostly north of the Fevik area in Grimstad, south of the city centre. The offices of UNEP/GRID-Arendal are located in the town of Arendal. There are several churches in the city of Arendal including Trinity Church, Bjorbekk Church, Barbu Church and Stokken Church. History The village of Arendal was established in the middle of the 16th century, and was then called . Initially, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skaggerak
The Skagerrak (, , ) is a strait running between the Jutland peninsula of Denmark, the southeast coast of Norway and the west coast of Sweden, connecting the North Sea and the Kattegat sea area through the Danish Straits to the Baltic Sea. The Skagerrak contains some of the busiest shipping routes in the world, with vessels from every corner of the globe. It also supports an intensive fishing industry. The ecosystem is strained and negatively affected by direct human activities. Oslo and Gothenburg are the only large cities in the Skagerrak region. Name The meaning of ''Skagerrak'' is most likely the Skagen Channel/Strait. Skagen is a town near the northern cape of Denmark (The Skaw). ''Rak'' means 'straight waterway' (compare the Damrak in Amsterdam); it is cognate with '' reach''.Nudansk Ordbog (1993), 15th edition, 2nd reprint, Copenhagen: Politikens Forlag, entry ''Skagerrak''. The ultimate source of this syllable is the Proto-Indo-European root *reg-, 'straight'. ''Rak'' me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
