Submersion Baptism
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Submersion Baptism
Submersion may refer to: *Being or going underwater, as via submarine, underwater diving, or scuba diving * Submersion (coastal management), the sustainable cyclic portion of foreshore erosion *Submersion (mathematics) In mathematics, a submersion is a differentiable map between differentiable manifolds whose pushforward (differential), differential is everywhere surjective. It is a basic concept in differential topology, dual to that of an immersion (mathematics ... * Submersion (Stargate Atlantis), an episode of the television series ''Stargate Atlantis'' See also * Submerge (other) * Submergence (other) * Immersion (other) {{disambiguation ...
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Underwater
An underwater environment is a environment of, and immersed in, liquid water in a natural or artificial feature (called a Water, body of water), such as an ocean, sea, lake, pond, reservoir, river, canal, or aquifer. Some characteristics of the underwater environment are universal, but many depend on the local situation. Liquid water has been present on Earth for most of the History of Earth, history of the planet. The underwater environment is thought to be the place of the origin of life on Earth, and it remains the ecological region most critical to the support of life and the natural habitat of the majority of living organisms. Several branches of science are dedicated to the study of this environment or specific parts or aspects of it. A number of human activities are conducted in the more accessible parts of the underwater environment. These include research, underwater diving for work or recreation, and underwater warfare with submarines. It is hostile to humans in many ...
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Submarine
A submarine (often shortened to sub) is a watercraft capable of independent operation underwater. (It differs from a submersible, which has more limited underwater capability.) The term "submarine" is also sometimes used historically or informally to refer to remotely operated vehicles and Autonomous underwater vehicle, robots, or to medium-sized or smaller vessels (such as the midget submarine and the wet sub). Submarines are referred to as ''boats'' rather than ''ships'' regardless of their size. Although experimental submarines had been built earlier, submarine design took off during the 19th century, and submarines were adopted by several navies. They were first used widely during World War I (1914–1918), and are now used in many navy, navies, large and small. Their military uses include: attacking enemy surface ships (merchant and military) or other submarines; aircraft carrier protection; Blockade runner, blockade running; Ballistic missile submarine, nuclear deterrenc ...
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Underwater Diving
Underwater diving, as a human activity, is the practice of descending below the water's surface to interact with the environment. It is also often referred to as diving (other), diving, an ambiguous term with several possible meanings, depending on context. Immersion in water and exposure to high ambient pressure have Physiology, physiological effects that limit the depths and duration possible in ambient pressure diving. Humans are not physiologically and anatomically well-adapted to the environmental conditions of diving, and various equipment has been developed to extend the depth and duration of human dives, and allow different types of work to be done. In ambient pressure diving, the diver is directly exposed to the pressure of the surrounding water. The ambient pressure diver may dive on breath-hold (freediving) or use breathing apparatus for scuba diving or surface-supplied diving, and the saturation diving technique reduces the risk of decompression sickness ...
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Scuba Diving
Scuba diving is a Diving mode, mode of underwater diving whereby divers use Scuba set, breathing equipment that is completely independent of a surface breathing gas supply, and therefore has a limited but variable endurance. The word ''scuba'' is an Acronym#Normal case and acronyms, acronym for "Self-Contained Underwater Breathing Apparatus" and was coined by Christian J. Lambertsen in a patent submitted in 1952. Scuba divers carry their own source of breathing gas, affording them greater independence and movement than surface-supplied divers, and more time underwater than freedivers. Although the use of compressed air is common, other gas blends are also used. Open-circuit scuba systems discharge the breathing gas into the environment as it is exhaled and consist of one or more diving cylinders containing breathing gas at high pressure which is supplied to the diver at ambient pressure through a diving regulator. They may include additional cylinders for range extension, de ...
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Submersion (coastal Management)
Submersion is the sustainable cyclic portion of coastal erosion where coastal sediments move from the visible portion of a beach to the submerged nearshore region, and later return to the original visible portion of the beach. The recovery portion of the sustainable cycle of sediment behaviour is named accretion. Submersion vs erosion The sediment that is submerged during rough weather forms landforms including storm bars. In calmer weather waves return sediment to the visible part of the beach. Due to longshore drift some sediment can end up further along the beach from where it started. Often coastal areas have developed sustainable coastal positions where the sediment moving off beaches is sustainable submersion. On many inhabited coastlines, anthropogenic interference in coastal processes has meant that erosion is often more permanent than submersion. Community perception The term ''erosion'' often is associated with undesirable impacts on the environment, whereas submersi ...
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Submersion (mathematics)
In mathematics, a submersion is a differentiable map between differentiable manifolds whose pushforward (differential), differential is everywhere surjective. It is a basic concept in differential topology, dual to that of an immersion (mathematics), immersion. Definition Let ''M'' and ''N'' be differentiable manifolds, and let f\colon M\to N be a differentiable map between them. The map is a submersion at a point p \in M if its pushforward (differential), differential :Df_p \colon T_p M \to T_N is a surjective linear map. In this case, is called a regular point of the map ; otherwise, is a critical point (mathematics), ''critical point''. A point q \in N is a regular value of if all points in the preimage f^(q) are regular points. A differentiable map that is a submersion at each point p \in M is called a submersion. Equivalently, is a submersion if its differential Df_p has rank (differential topology), constant rank equal to the dimension of . Some authors use the ter ...
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Submersion (Stargate Atlantis)
The third season of ''Stargate Atlantis'', an American-Canadian television series, began airing on July 21, 2006 on the US-American Sci Fi Channel. The third season concluded after 20 episodes on February 5, 2007 on the Canadian The Movie Network. The series was developed by Brad Wright and Robert C. Cooper, who also served as executive producers. Season three regular cast members include Joe Flanigan, Torri Higginson, Rachel Luttrell, Jason Momoa, with Paul McGillion, and David Hewlett as Dr. Rodney McKay. Cast * Starring Joe Flanigan as Lt. Colonel John Sheppard * Torri Higginson as Dr. Elizabeth Weir * Rachel Luttrell as Teyla Emmagan * Jason Momoa as Ronon Dex * With Paul McGillion as Dr. Carson Beckett * And David Hewlett as Dr. Rodney McKay Episodes Episodes in bold are continuous episodes, where the story spans over 2 or more episodes. Production * Richard Kind, who played Lucius Lavin in "Irresistible" and "Irresponsible", also played a minor role as Gary Me ...
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Submerge (other)
Submerge (and its variants) means to be covered by something (usually a liquid), such as being underwater: * Submerged arc welding * Submerged continent * Submerged forest * Submerged floating tunnel * Submerged specific gravity * Submergent coastline * Submergent plant * Submersible * Submersible bridge * Submersible drilling rig * Submersible mixer * Submersisphaeria, submerged fungi genus * Ceratophyllum submersum, submerged, free-floating, aquatic plant * the action of a Submarine#Buoyancy and trim, submarine of diving below the surface of water Submerge, Submerged, or Submersed may also refer to: * ''Submerge'', 1998 album by the Japanese alternative rock band Coaltar of the Deepers * Submerge (nightclub), Indian nightclub * Submerged (2000 film), ''Submerged'' (2000 film), a 2000 film * Submerged (2005 film), ''Submerged'' (2005 film), a 2005 film * Submerged (2016 film), ''Submerged'' (2016 film), a 2016 film * Submerged (video game), ''Submerged'' (video game), a 2015 vi ...
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Submergence (other)
Submergence may refer to: *'' Submergence (film)'', a 2017 film by Wim Wenders *'' Submergence (novel),'' a 2012 book by J. M. Ledgard *Submersion (other) See also *Submerge (other) * Deep-submergence vehicle * Deep-submergence rescue vehicle *Submersible A submersible is an underwater vehicle which needs to be transported and supported by a larger ship, watercraft or dock, platform. This distinguishes submersibles from submarines, which are self-supporting and capable of prolonged independent ope ...
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