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Fenerbahçe Lighthouse
__NOTOC__ The Fenerbahçe Lighthouse (), a historical lighthouse still in use, is located on the northern coast of Sea of Marmara at Fenerbahçe neighborhood of Kadıköy district in Istanbul, Turkey. History Historical documents mention that the location of the cape caused often maritime damage. In 1562, Sultan Suleiman the Magnificent (reigned 1520–1566) issued a decree, in which he ordered the establishment of a light on the rocks at Kalamış Cape, as the location was called that time. Built in 1857, the lighthouse stands on a point at Cape Fenerbahçe close to the eastern side of the Bosporus entrance. The location Fenerbahçe was named after the lighthouse (literally: "Fener" for lighthouse and "bahçe" for garden). It is situated about south of Kadıköy in a public park. The tower with a cylindrical form has two galleries. The lighthouse is painted white. A masonry one-story keeper's house is attached to it. The lighthouse was initially lit by kerosene, however the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dalén Light
A Dalén light is a flashing light produced from burning of carbide gas (acetylene), combined with a solar sensor which automatically operates the light only during darkness. Overview In the last quarter of the 19th century navigation buoys began to be illuminated, however at first the lights were fixed (continuous) and could be mistaken for ship's navigation lights. Gustaf Dalén invented a valve which could be adjusted to deliver pulses of acetylene into the lamp. A pilot light, which burns continuously, then ignited them. The pattern of flashes (known as the light's ''characteristic'') can be set by screw adjustments. The invention of this system resulted in Dalén being awarded the 1912 Nobel Prize in Physics. Gas was wasted however due to illumination during the day and subsequently Dalén developed the sun valve to shut off the flashes during daylight. The technology was a form of light source in lighthouses from the 1900s through the 1960s, when electric lighting had ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lighthouses In Istanbul
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 the advent of much cheaper, more sophisticated, and more 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 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 promontories, unlike many mod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tourist Attractions In Istanbul
Tourism is travel for pleasure, and the Commerce, commercial activity of providing and supporting such travel. World Tourism Organization, UN Tourism defines tourism more generally, in terms which go "beyond the common perception of tourism as being limited to holiday activity only", as people "travelling to and staying in places outside their usual environment for not more than one consecutive year for leisure and not less than 24 hours, business and other purposes". Tourism can be Domestic tourism, domestic (within the traveller's own country) or International tourism, international. International tourism has both incoming and outgoing implications on a country's balance of payments. Between the second half of 2008 and the end of 2009, tourism numbers declined due to a severe Economy, economic slowdown (see Great Recession) and the outbreak of the 2009 2009 flu pandemic, H1N1 influenza virus. These numbers, however, recovered until the COVID-19 pandemic put an abrupt end to th ... [...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 lens (optics), 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 the advent of much cheaper, more sophisticated, and more 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 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 promontory, prom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Lighthouses In Turkey
This is an incomplete list of lighthouses in Turkey. As of 2011, there were a total of 445 lighthouses and light vessels in service on Turkey's coastline, which has a total length of . Black Sea *Anadolu Feneri, Istanbul Province *İnceburun Lighthouse, Sinop Province *İnebolu Feneri, Kastamonu Province * Gerze Feneri, Sinop Province *İğneada Feneri, Kırklareli Province * Kefken Adası Feneri, Kocaeli Province *Kerempe Feneri, Kastamonu Province *Rumeli Feneri, Istanbul Province * Şile Feneri, Istanbul Province Sea of Marmara * Ahırkapı Feneri, Istanbul *Kadıköy İnciburnu Feneri, Istanbul * Fenerbahçe Feneri, Istanbul *Hoşköy Hora Feneri, Tekirdağ Province *Maiden's Tower, Istanbul *Yeşilköy Feneri, Istanbul Aegean Sea * Babakale Feneri, Çanakkale Province, *Datça Feneri, Muğla Province * Knidos Deveboynu Feneri, Muğla Province *Kuşadası Feneri, Aydın Province *Sarpıncık Feneri, İzmir Province Mediterranean Sea * Gelidonya Feneri, Antalya Province *Hı ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ministry Of Transport And Communication (Turkey)
The Ministry of Transport and Infrastructure () is a government ministry office of the Republic of Turkey, responsible for transport, information and communication services in Turkey. Its head office is in Ankara Ankara is the capital city of Turkey and List of national capitals by area, the largest capital by area in the world. Located in the Central Anatolia Region, central part of Anatolia, the city has a population of 5,290,822 in its urban center ( .... The current minister is Abdulkadir Uraloğlu, in office since June 2023. Agency and bodies Central directorates-general and departments *Directorate-General of Transport Services Regulation (DGTSR) *Directorate-General of Maritime Affairs (DGMA) *Directorate-General of Shipyards and Coastal Structures (DGSCS) *Directorate-General of Communications (DGC) *Directorate-General of Infrastructure Investments (DGII) *Directorate-General of European Union Affairs and Foreign Relations (DGEUFR) *Directorate-General of Legal S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amateur Radio Lighthouse Society
An amateur () is generally considered a person who pursues an avocation independent from their source of income. Amateurs and their pursuits are also described as popular, informal, self-taught, user-generated, DIY, and hobbyist. History Historically, the amateur was considered to be the ideal balance between pure intent, open mind, and the interest or passion for a subject. That ideology spanned many different fields of interest. It may have its roots in the ancient Greek philosophy of amateur athletes competing in the Olympics. The ancient Greek citizens spent most of their time in other pursuits, but competed according to their natural talents and abilities. The "gentleman amateur" was a phenomenon among the gentry of Great Britain from the 17th century until the 20th century. With the start of the Age of Reason, with people thinking more about how the world works around them, (see science in the Age of Enlightenment), things like the cabinets of curiosities, and the wri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foghorn
A foghorn or fog signal is a device that uses sound to warn vehicles of navigational hazards such as rocky coastlines, or boats of the presence of other vessels, in foggy conditions. The term is most often used in relation to marine transport. When visual navigation aids such as lighthouses are obscured, foghorns provide an audible warning of rock outcrops, shoals, headlands, or other dangers to shipping. Description All foghorns use a vibrating column of air to create an audible tone, but the method of setting up this vibration differs. Some horns, such as the Daboll trumpet, used vibrating plates or metal reed (music), reeds, a similar principle to a modern electric Vehicle horn, car horn. Others used air forced through holes in a rotating cylinder or disk, in the same manner as a siren (alarm), siren. Semi-automatic operation of foghorns was achieved by using a clockwork mechanism (or "coder") to sequentially open the valves admitting air to the horns; each horn was given its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catadioptric System
A catadioptric optical system is one where refraction and Reflection (physics), reflection are combined in an optical system, usually via lens (optics), lenses (dioptrics) and curved mirrors (catoptrics). Catadioptric combinations are used in focusing systems such as searchlights, headlamps, early lighthouse focusing systems, optical telescopes, microscopes, and telephoto photographic lens, lenses. Other optical systems that use lenses and mirrors are also referred to as "catadioptric", such as surveillance catadioptric sensors. Early catadioptric systems Catadioptric combinations have been used for many early optical systems. In the 1820s, Augustin-Jean Fresnel developed several catadioptric lighthouse reflector versions of his Fresnel lens. Léon Foucault developed a catadioptric microscope in 1859 to counteract aberrations of using a lens to image objects at high power. In 1876 a French engineer, A. Mangin, invented what has come to be called the Mangin mirror, a concave glas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acetylene
Acetylene (Chemical nomenclature, systematic name: ethyne) is a chemical compound with the formula and structure . It is a hydrocarbon and the simplest alkyne. This colorless gas is widely used as a fuel and a chemical building block. It is unstable in its pure form and thus is usually handled as a solution. Pure acetylene is odorless, but commercial grades usually have a marked odor due to impurities such as divinyl sulfide and phosphine.Compressed Gas Association (1995Material Safety and Data Sheet – Acetylene As an alkyne, acetylene is Saturated and unsaturated compounds, unsaturated because its two carbon atoms are Chemical bond, bonded together in a triple bond. The carbon–carbon triple bond places all four atoms in the same straight line, with CCH bond angles of 180°. The triple bond in acetylene results in a high energy content that is released when acetylene is burned. Discovery Acetylene was discovered in 1836 by Edmund Davy, who identified it as a "new carburet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbide
In chemistry, a carbide usually describes a compound composed of carbon and a metal. In metallurgy, carbiding or carburizing is the process for producing carbide coatings on a metal piece. Interstitial / Metallic carbides The carbides of the group 4, 5 and 6 transition metals (with the exception of chromium) are often described as interstitial compounds. These carbides have metallic properties and are refractory. Some exhibit a range of stoichiometries, being a non-stoichiometric mixture of various carbides arising due to crystal defects. Some of them, including titanium carbide and tungsten carbide, are important industrially and are used to coat metals in cutting tools. The long-held view is that the carbon atoms fit into octahedral interstices in a close-packed metal lattice when the metal atom radius is greater than approximately 135 pm: *When the metal atoms are cubic close-packed, (ccp), then filling all of the octahedral interstices with carbon achieves 1:1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
