underwater volume

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• Underwater habitat — Underwater habitats are underwater structures in which people can live for extended periods and carry out most of the basic human functions of a 24 hour day, such as working, resting, eating, attending to personal hygiene, and sleeping. In this… …   Wikipedia

• Underwater welding — refers to a number of distinct welding processes that are performed underwater.cite book |author=Keats, DJ |year=2005 |title=Underwater Wet Welding A Welder s Mate |publisher=Speciality Welds Ltd |url=http://www.specialwelds.com |isbn=1 899293 99 …   Wikipedia

• Underwater demolition — refers to the deliberate destruction or neutralization of man made or natural underwater obstacles, both for military and civilian purposes.HistoryJohn G. FosterShortly after the American Civil War, Brevet Maj. Gen. John G. Foster, a West Point… …   Wikipedia

• Underwater archaeology — is the study of past human life, behaviours and cultures using the physical remains found in salt or fresh water or buried beneath water logged sedimentMuckelroy, K., Maritime archaeology. Cambridge University Press 1978. ISBN 0 521 29348 0] . It …   Wikipedia

• Underwater videography — is the branch of underwater photography concerned with capturing underwater moving images either as a recreational diving or commercial documentary or movie making activity.Limitations of Underwater VideoThe primary difficulty in underwater… …   Wikipedia

• Underwater — is a term describing the realm below the surface of water where the water exists in a natural feature (called a body of water) such as an ocean, sea, lake, pond, or river. Three quarters of the planet Earth is covered by water. A majority of the… …   Wikipedia

• Underwater acoustics — The field of underwater acoustics is closely related to a number of other fields of acoustic study, including sonar, transduction, acoustic signal processing, acoustical oceanography, bioacoustics, and physical acoustics.HistoryUnderwater sound… …   Wikipedia

• Underwater vision — Light rays bend when they enter from one medium to another of different density. The amount of bending is determined by the refractive indices of the two media. If one medium has a particular curved shape, it functions as a lens. The cornea,… …   Wikipedia

• Underwater hockey — Two players competing for the puck at GB Student Nationals, Bangor Underwater hockey (UWH; also called Octopush and Water Hockey) is a global non contact sport in which two teams compete to maneuver a puck across the bottom of a swimming pool… …   Wikipedia

• Underwater diving — This article refers to underwater diving by humans. For other uses of the term diving, see dive and diving Underwater diving is the practice of going underwater with or without breathing apparatus. Recreational diving is a popular activity (also… …   Wikipedia

• Underwater explosion — An underwater explosion, also known as an UNDEX, is an explosion beneath the surface of water. The type of explosion may be chemical or nuclear. They are categorized in accordance with their depth beneath the water s surface, because this has a… …   Wikipedia