nuclear density gauge

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• Nuclear density gauge — A nuclear density gauge is a tool used in civil construction and the petroleum industry, as well as for mining and archaeology purposes. It consists of a radiation source that emits a directed beam of particles and a sensor that counts the… …   Wikipedia

• Nuclear densometer — A nuclear densometer is a field instrument used in geotechnical engineering to determine the density of a compacted material. Also known as a soil density gauge, the device uses the interaction of gamma radiation with matter to measure density,… …   Wikipedia

• Gauge theory — For a generally accessible and less technical introduction to the topic, see Introduction to gauge theory. In physics, a gauge theory is a type of field theory in which the Lagrangian is invariant under a continuous group of local transformations …   Wikipedia

• Nuclear meltdown — Three of the reactors at Fukushima I overheated, causing core meltdowns. This was compounded by hydrogen gas explosions and the venting of contaminated steam which released large amounts of radioactive material into the air.[1] …   Wikipedia

• Nuclear Densometer Test — A Nuclear Densometer Test is a field test used in geotechnical engineering. The test is performed on a compacted base to establish its percentage of compaction. Before field tests are performed, the technician performs a calibration on the gauge… …   Wikipedia

• Introduction to gauge theory — This article is an accessible, non technical introduction to the subject. For the main encyclopedia article, see Gauge theory. Quantum field theory …   Wikipedia

• ГОСТ 23061-2012: Грунты. Методы радиоизотопных измерений плотности и влажности — Терминология ГОСТ 23061 2012: Грунты. Методы радиоизотопных измерений плотности и влажности оригинал документа: 3.9 база измерительного преобразователя (длина зонда) (measuring probe base): Середина расстояния между центрами источника и детектора …   Словарь-справочник терминов нормативно-технической документации

• радиоизотопный плотномер — 3.4 радиоизотопный плотномер (nuclear density gauge): Плотномер, принцип действия которого основан на регистрации рассеянного и поглощенного гамма излучения на электронах атомов вещества объекта измерения. Источник: ГОСТ 23061 2012: Грунты.… …   Словарь-справочник терминов нормативно-технической документации

• India — /in dee euh/, n. 1. Hindi, Bharat. a republic in S Asia: a union comprising 25 states and 7 union territories; formerly a British colony; gained independence Aug. 15, 1947; became a republic within the Commonwealth of Nations Jan. 26, 1950.… …   Universalium

• France — /frans, frahns/; Fr. /frddahonns/, n. 1. Anatole /ann nann tawl /, (Jacques Anatole Thibault), 1844 1924, French novelist and essayist: Nobel prize 1921. 2. a republic in W Europe. 58,470,421; 212,736 sq. mi. (550,985 sq. km). Cap.: Paris. 3.… …   Universalium

• physics — /fiz iks/, n. (used with a sing. v.) the science that deals with matter, energy, motion, and force. [1580 90; see PHYSIC, ICS] * * * I Science that deals with the structure of matter and the interactions between the fundamental constituents of… …   Universalium