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Turret 41a - Geograph
Turret may refer to: * Turret (architecture), a small tower that projects above the wall of a building * Gun turret, a mechanism of a projectile-firing weapon * Objective turret, an indexable holder of multiple lenses in an optical microscope * Missile turret, a device for aiming missiles towards their intended target before launch * The Turret, a headland in Antarctica * Trading turret, a specialised telephony key system * Turret (anatomy), an element of the anatomy of a turret sponge * Turret (character), a character in the television series ''Dino-Riders'' * Turret (electronics), an element of a turret board that is soldered to electronic components to complete a circuit layout * Turret (superstructure), an element in the design of turret deck ships * Turret (toolholder), an indexable holder of multiple tools **Turret lathe, a lathe with a turret toolholder * Turret (Hadrian's Wall), one of a series of watchtowers See also * It-Turretta (other) * Tourette (disambiguatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turret (architecture)
In architecture, a turret is a small circular tower, usually notably smaller than the main structure, that projects outwards from a wall or corner of that structure. Turret also refers to the small towers built atop larger tower structures. Etymology The word ''turret'' originated in around the year 1300 from ''touret'' which meant "small tower rising from a city wall, castle, or other larger building." ''Touret'' came from the Old French term ''torete'' which is the diminutive form of ''tour'', meaning “tower.” ''Tour'' dates back to the Latin word ''turris'' which also means “tower.” There is a record from 1862 of ''turret'' being used to mean "low, flat gun tower on a warship." Around this time, the word split into two separate definitions, with this definition being the one that goes on to describe gun turrets, a separate idea from the architectural element. Uses Turrets initially arose on castles out of a defensive need for greater visibility. Since they proje ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gun Turret
A gun turret (or simply turret) is a mounting platform from which weapons can be fired that affords protection, visibility and ability to turn and aim. A modern gun turret is generally a rotatable weapon mount that houses the crew or mechanism of a projectile-firing weapon and at the same time lets the weapon be aimed and fired in some degree of azimuth and elevation (cone of fire). Description Rotating gun turrets protect the weapon and its crew as they rotate. When this meaning of the word "turret" started being used at the beginning of the 1860s, turrets were normally cylindrical. Barbettes were an alternative to turrets; with a barbette the protection was fixed, and the weapon and crew were on a rotating platform inside the barbette. In the 1890s, armoured hoods (also known as "gun houses") were added to barbettes; these rotated with the platform (hence the term "hooded barbette"). By the early 20th century, these hoods were known as turrets. Modern warships have gun-m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optical Microscope
The optical microscope, also referred to as a light microscope, is a type of microscope that commonly uses visible light and a system of lenses to generate magnified images of small objects. Optical microscopes are the oldest design of microscope and were possibly invented in their present compound form in the 17th century. Basic optical microscopes can be very simple, although many complex designs aim to improve resolution and sample contrast. The object is placed on a stage and may be directly viewed through one or two eyepieces on the microscope. In high-power microscopes, both eyepieces typically show the same image, but with a stereo microscope, slightly different images are used to create a 3-D effect. A camera is typically used to capture the image (micrograph). The sample can be lit in a variety of ways. Transparent objects can be lit from below and solid objects can be lit with light coming through ( bright field) or around ( dark field) the objective lens. Polar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Missile Turret
{{unreferenced, date=March 2016 A missile turret is a device used to aim missiles towards their targets before Rocket launcher, launch. Similarly to gun turrets they have been used on warships and Transporter erector launcher, vehicles on the ground. In most roles articulated missile launching systems on warships have been replaced by Vertical Launching System, vertical launching systems. Ship-based missile systems often have centralised guidance systems which eliminate the need for targeting sensors on the turrets themselves. The systems found on warships, especially those from the Cold War, may be termed as arm-launchers, either single- or twin-arm launchers, based on the amount of ready-to-fire missiles that they can hold. Examples Aboard ships: Close-in weapon system *RIM-116 Rolling Airframe Missile, Rolling Airframe Missile *Crotale missile systems. *Mk 10 GMLS for the RIM-67 Standard or RIM-2 Terrier missile *Mk 12 GMLS for the RIM-8 Talos missile *Mk 13 Missile Launch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Turret
The Turret () is a conspicuous rocky headland, 460 m high, at the south side of the entrance to Gibbon Bay on the east coast of Coronation Island, in the South Orkney Islands. Probably first sighted by Captain George Powell and Captain Nathaniel Palmer Nathaniel Brown Palmer (August 8, 1799 – June 21, 1877) was an American seal hunter, explorer, sailing captain, ship designer, and a whale hunter. He gave his name to Palmer Land, Antarctica, which he explored in 1820 on his sloop ''Hero''. ... who discovered these islands in December 1821. Charted and given this descriptive name by DI personnel on the '' Discovery II'' in 1933. Headlands of the South Orkney Islands {{SouthOrkneys-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trading Turret
A trading turret or dealer board is a specialized Key telephone system, telephony key system that is generally used by Trader (finance), financial traders on their trading desks. Trading has progressed from floor trading through phone trading to electronic trading during the later half of the twentieth century with phone trading having dominated during the 1980s and 1990s. Although most trading volume is now done via electronic trading platforms, some phone trading persists and trading turrets are common on trading desks of investment banks. Voice trading turrets Trading turrets, unlike typical phone systems, have a number of features, functions and capabilities specifically designed for the needs of financial traders. Trading turrets enable users to visualize and prioritize incoming call activity from customers or counter-parties and make calls to these same people instantaneously by pushing a single button to access dedicated line, dedicated point-to-point telephone lines (com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turret (anatomy)
''Haliclona anonyma'', the turret sponge or tubular fan sponge, is a species of demosponge.Samaai, T. and Gibbons, M.J. 2005. Demospongiae taxonomy and biodiversity of the Benguela region on the west coast of South Africa. ''Afr. Nat. Hist''. 1(1):1-96 It is endemic to South Africa, where it occurs between the Cape Peninsula and Sodwana Bay Sodwana Bay is a bay in South Africa on the KwaZulu Natal north coast, between St. Lucia and Lake Sibhayi. It is in the Sodwana Bay National Park, and the Maputaland Marine Reserve, and is a popular recreational diving destination. The term i .... Description ''Haliclona anonyma'' grows to about across and has turrets of up to long. It is a pink to purplish or brown many-turreted sponge, which grows in sheets usually on vertical walls. The coalescent (fused) tubular branches terminate in rounded ends with slightly raised conspicuous oscules. Its surface is slightly bristly with small ostia (channels allowing for water movement), and i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turret (character)
''Dino-Riders'' is an American animated television series that first aired in 1988. The cartoon was primarily a promotional show to launch a new Tyco toy line.''Dino Riders'' synopsis Only fourteen episodes were produced, three of which were produced on VHS for the United States. The show aired in the U.S. as part of the '''' programming block. The series focuses on the battle between the Valorians and Rulons on prehistoric Earth. The Valorians were a superhuman race, while the Rulons comprised several types of humanoid animals. Both races came from the future but were transported back in time to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turret (electronics)
In electronics, turret boards were an early attempt at making circuits that were relatively rugged, producible, and serviceable in the days before printed circuit boards (PCBs). As this method was somewhat more expensive than conventional " point-to-point" wiring techniques, it was generally found in the more expensive components, such as professional, commercial, and military audio and test equipment. This is similar to cordwood construction. Turret boards consist of a thin (generally 1/8 inch) piece of insulating material drilled in pattern to match the electronic layout of a set of components. Each hole drilled will have a metal post (the turret) positioned in it. Electronic components are suspended between these turrets and soldered to them to create a complete circuit layout. Most of the military electronics used in WWII made use of this construction method, and Altec professional gear of similar vintage has the same construction. However, the underside of some ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turret (superstructure)
A turret deck ship is a type of merchant ship with an unusual Hull (watercraft), hull, designed and built in the late 19th and early 20th centuries. The hulls of turret deck vessels were rounded and stepped inward above their waterlines. This gave some advantages in strength and allowed them to pay lower canal tolls under tonnage measurement rules then in effect. The type ceased to be built after those rules changed. The last turret deck ship in existence was scrapped in 1960. Development Turret deck ships were inspired by the visit of the US whaleback vessel to Liverpool in 1891. Like others of the type, ''Wetmore'' had a hull in the form of a flattened cigar, with a continuous curve above the waterline to where the sides met amidships. The superstructure atop the hull was in round or oval "turrets", so named because of their resemblance to gun turret, gunhouses on contemporary warships. In 1893 William Doxford & Sons, William Doxford and Sons Ltd. ("Doxford") of Sunderland, Ty ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turret (toolholder)
A turret lathe is a form of lathe (metal), metalworking lathe that is used for repetitive production of duplicate parts, which by the nature of their cutting process are usually interchangeable parts, interchangeable. It evolved from earlier lathes with the addition of the ''turret'', which is an indexing (motion), indexable toolholder that allows multiple cutting operations to be performed, each with a different Cutting tool (machining), cutting tool, in easy, rapid succession, with no need for the operator to perform set-up tasks in between (such as installing or uninstalling tools) or to control the toolpath. The latter is due to the toolpath's being controlled by the machine, either in jig (tool), jig-like fashion, via the mechanical limits placed on it by the turret's slide and stops, or via Digital electronics, digitally-directed servomechanisms for computer numerical control lathes. The name derives from the way early turrets took the general form of a flattened cylindrical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
