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Turret
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 (disambigu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turret (Hadrian's Wall)
A turret was a small watch tower, incorporated into the curtain wall of Hadrian's Wall. The turrets were normally spaced at intervals of one third of a Roman mile (equivalent to ) between Milecastles, giving two Turrets between each Milecastle. Numbering system and naming In the numbering system introduced by John Collingwood Bruce in 1930, Turrets were numbered after the Milecastle located to the east of the turret. The nearest turret to the milecastle is suffixed by 'A', and the other turret by 'B'. For example, travelling west from Milecastle 33, the first Turret encountered would be Turret 33A, and the second would be Turret 33B. Both lower and upper case 'A' and 'B' suffixes are in widespread use, and the full name is often abbreviated to (for example) 'T33a'. Many turrets also have a name, which is often shown in brackets following the number. For example, Brunton Turret is often referred to as 'Turret 26B (Brunton)'. Turf Wall Where the Turf Wall and Stone Walls di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turret (superstructure)
A turret deck ship is a type of merchant ship with an unusual 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. There are no surviving examples. 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.OakleyWhaleback freighter ''Charles W. Wetmore'' arrives in Everett on December 21, 1891 The superstructure atop the hull was in round or oval "turrets", so named because of their resemblance to gunhouses on contemporary warships. In 1893 William Doxford and Sons Ltd. ("Doxford") of Sunde ... [...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 gu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turret (toolholder)
The turret lathe is a form of metalworking lathe that is used for repetitive production of duplicate parts, which by the nature of their cutting process are usually interchangeable. It evolved from earlier lathes with the addition of the ''turret'', which is an indexable toolholder that allows multiple cutting operations to be performed, each with a different 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-like fashion, via the mechanical limits placed on it by the turret's slide and stops, or via digitally-directed servomechanisms for computer numerical control lathes. The name derives from the way early turrets took the general form of a flattened cylindrical block mounted to the lathe's cross-slide, capable of rotating about the vertical axis and with toolholders p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turret Lathe
The turret lathe is a form of metalworking lathe that is used for repetitive production of duplicate parts, which by the nature of their cutting process are usually interchangeable. It evolved from earlier lathes with the addition of the ''turret'', which is an indexable toolholder that allows multiple cutting operations to be performed, each with a different 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-like fashion, via the mechanical limits placed on it by the turret's slide and stops, or via digitally-directed servomechanisms for computer numerical control lathes. The name derives from the way early turrets took the general form of a flattened cylindrical block mounted to the lathe's cross-slide, capable of rotating about the vertical axis and with toolholders pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turret (architecture)
In architecture, a turret is a small tower that projects vertically from the wall of a building such as a medieval castle. Turrets were used to provide a projecting defensive position allowing covering fire to the adjacent wall in the days of military fortification. As their military use faded, turrets were used for decorative purposes, as in the Scottish baronial style. A turret can have a circular top with crenellations as seen in the picture at right, a pointed roof, or other kind of apex. It might contain a staircase if it projects higher than the building; however, a turret is not necessarily higher than the rest of the building; in this case, it is typically part of a room, that can be simply walked into – see the turret of Chateau de Chaumont on the collection of turrets, which also illustrates a turret on a modern skyscraper. A building may have both towers and turrets; towers might be smaller or higher, but turrets instead project from the edge of a building ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turret (character)
''Dino-Riders'' is an animated television series that first aired in 1988. ''Dino-Riders'' was primarily a promotional show to launch a new Tyco toy line. 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 '' Marvel Action Universe'' programming block. The series focuses on the battle between the heroic Valorians and the evil Rulon Alliance on prehistoric Earth. The Valorians were a superhuman race, while the Rulons comprised several breeds of humanoids (ants, crocodiles, snakes, and sharks were the most common). Both races came from the future but were transported back in time to the age of ... [...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, 1799June 21, 1877) was an American seal hunter, explorer, sailing captain, and ship designer. He gave his name to Palmer Land, Antarctica, which he explored in 1820 on his sloop ''Hero''. He was born in Stonin ... 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 telephony key system that is generally used by 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 point-to-point telephone lines (commonly called Ringdown circuits). In addition, man ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
It-Turretta (other)
It-Turretta is a Maltese word meaning "the turret". Specifically, it may refer to the following towers in Malta: * Tower of St. Joseph, a 17th-century water tower in Santa Venera * Għaxaq Semaphore Tower, a 19th-century semaphore tower in Għaxaq See also * Torretta, a Sicilian town called ''Turretta'' in Sicilian {{disambig ... [...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. Polarise ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
