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underwater technology

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  • 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 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 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 navigation — is the common reference term for navigation techniques learned by Scuba divers in order to accurately navigate in an underwater environment.Although it is considered a basic skill, it is normally only taught to a limited degree as part of basic… …   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 Port Security System — See UIS and IAS for other meanings of these initials. : For other diver detector sonars, see .UPSS stands for Underwater Port Security System, developed for the United States Coast Guard and the MSST (= Maritime Safety and Security Teams) as an… …   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 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

  • technology, history of — Introduction       the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …   Universalium

  • Underwater glider — An underwater glider is a type of autonomous underwater vehicle (AUV) that uses small changes in its buoyancy in conjunction with wings to convert vertical motion to horizontal, and thereby propel itself forward with very low power consumption.… …   Wikipedia

  • Topic outline of technology — Technology refers to all tools and procedures. It is the state of knowledge and development at any given time on controlling our surroundings, and includes all tools (utensils, devices, machinery, inventions, and structures), all methods (skills …   Wikipedia

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