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radiometric method

См. также в других словарях:

  • Radiometric dating — (often called radioactive dating) is a technique used to date materials such as rocks, usually based on a comparison between the observed abundance of a naturally occurring radioactive isotope and its decay products, using known decay rates.[1]… …   Wikipedia

  • radiometric — adj. of or relating to the measurement of radioactivity. Phrases and idioms: radiometric dating a method of dating geological specimens by determining the relative proportions of the isotopes of a radioactive element present in a sample …   Useful english dictionary

  • radiometric dating — any method of determining the age of earth materials or objects of organic origin based on measurement of either short lived radioactive elements or the amount of a long lived radioactive element plus its decay product. Also called radioactive… …   Universalium

  • radiometric dating — ra′diomet′ric dat′ing n. gel phs ara any method of determining the age of earth materials or objects of organic origin based on measurement of either short lived radioactive elements or the amount of a long lived radioactive element plus its… …   From formal English to slang

  • radiometric dating — any method of determining the age of earth materials or objects of organic origin based on measurement of either short lived radioactive elements or the amount of a long lived radioactive element plus its decay product. Also called radioactive… …   Useful english dictionary

  • Harold G. Richter — (5 de marzo de 1925 19 de julio de 2001[1] ) fue un químico estadounidense, que colaboró en el descubrimiento del elemento químico de número atómico 61, prometio, perteneciente a los lantánidos, junto a Jacob A. Marinsky, Charles D. Coryell y… …   Wikipedia Español

  • Karen Bartelt — is an associate professor of chemistry at Eureka College in Eureka, Illinois. She married Bob Bartelt in 1972 and they have two adult children. In 1971 she received a Bachelor of Science degree from the University of Wisconsin at Madison then a… …   Wikipedia

  • radiometer — radiometric /ray dee oh me trik/, adj. radiometry, n. /ray dee om i teuhr/, n. 1. Also called Crookes radiometer. an instrument for demonstrating the transformation of radiant energy into mechanical work, consisting of an exhausted glass vessel… …   Universalium

  • dating — I In geology and archaeology, the process of determining an object s or event s place within a chronological scheme. Scientists may use either relative dating, in which items are sequenced on the basis of stratigraphic clues (see stratigraphy) or …   Universalium

  • geology — /jee ol euh jee/, n., pl. geologies. 1. the science that deals with the dynamics and physical history of the earth, the rocks of which it is composed, and the physical, chemical, and biological changes that the earth has undergone or is… …   Universalium

  • geochronology — geochronologic /jee oh kron l oj ik/, geochronological, adj. geochronologist, n. /jee oh kreuh nol euh jee/, n. the chronology of the earth, as based on both absolute and relative methods of age determination. [1890 95; GEO + CHRONOLOGY] * * *… …   Universalium

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