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stationary derrick

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  • Derrick's theorem — is an argument due to a physicist G.H. Derrick which shows that stationary localized solutions to a nonlinear wave equation or nonlinear Klein–Gordon equation in dimensions three and higher are unstable. Contents 1 Original argument 2… …   Wikipedia

  • derrick — [der′ik] n. [after Thos. Derrick, London hangman of the early 17th c.: first applied to a gallows] 1. a large apparatus for lifting and moving heavy objects: it consists of a long beam pivoted at the base of a vertical, stationary beam and moved… …   English World dictionary

  • derrick — /ˈdɛrɪk / (say derik) noun 1. any of various devices for lifting and moving heavy weights. 2. the tower like framework over an oil well or the like. 3. a crane, usually stationary, carrying lifting tackle at the end of a boom or jib. –verb (t) 4 …  

  • Crane (machine) — A modern crawler type derrick crane with outriggers. The latticed boom is fitted with a jib. A crane is a type of machine, generally equipped with a hoist, wire ropes or chains, and sheaves, that can be used both to lift and lower material …   Wikipedia

  • Drilling rig (petroleum) — The equipment associated with a rig is to some extent dependent on the type of rig but typically includes at least some of the following items: #Mud tank #Shale shakers #Suction line (mud pump) #Mud pump #Motor or power source #Vibrating hose… …   Wikipedia

  • List of components of oil drilling rigs — This article lists the main components of a petroleum onshore drilling rig. Offshore drilling rigs have similar elements, but are configured with a number of different drilling systems to suit drilling in the marine environment. The equipment… …   Wikipedia

  • Landing Ship, Tank — A Canadian LST off loads an M4 Sherman during the Allied invasion of Sicily in 1943. Landing Ship, Tank (LST) was the military designation for naval vessels created during World War II to support amphibious operations by carrying significant… …   Wikipedia

  • Ulster and Delaware Railroad — Locale Kingston Point, NY to Oneonta, NY, Hunter, NY Kaaterskill, NY …   Wikipedia

  • theatre — /thee euh teuhr, theeeu /, n. theater. * * * I Building or space in which performances are given before an audience. It contains an auditorium and stage. In ancient Greece, where Western theatre began (5th century BC), theatres were constructed… …   Universalium

  • Meridian, Mississippi —   City   Meridian s Gateway to Downtown, the 22nd Ave Bridge …   Wikipedia

  • Glossary of nautical terms — This is a glossary of nautical terms; some remain current, many date from the 17th 19th century. See also Wiktionary s nautical terms, Category:Nautical terms, and Nautical metaphors in English. Contents: A B C D E F G H I J K L M N O P Q R …   Wikipedia

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