detect radioactivity

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• radioactivity — noun … OF RADIOACTIVITY ▪ level ▪ The soil contains 30 times the acceptable level of radioactivity. VERB + RADIOACTIVITY ▪ produce, release ▪ the amount of radioactivity released b …   Collocations dictionary

• detect — verb ADVERB ▪ early, late ▪ Some cancers can now be cured if they are detected early. ▪ quickly, rapidly ▪ automatically ▪ …   Collocations dictionary

• The Pause — is a science fiction short story by Isaac Asimov. It was first published in August Derleth s 1954 anthology Time to Come and reprinted in the 1975 collection Buy Jupiter and Other Stories .Alexander Johannison, a nuclear physicist working at the… …   Wikipedia

• Geiger counter — noun /ˈɡaɪɡə ˈkaʊntə,ˈɡaɪɡɚ ˈkaʊntɚ/ A device designed to detect radioactivity and measure its intensity. Figure 27 shows a Geiger counter, used to detect ionizing radiation. The counter consists of a thin central wire, carrying a positive charge …   Wiktionary

• scan — v. & n. v. (scanned, scanning) 1 tr. look at intently or quickly (scanned the horizon; rapidly scanned the speech for errors). 2 intr. (of a verse etc.) be metrically correct; be capable of being recited etc. metrically (this line doesn t scan).… …   Useful english dictionary

• Alexander Litvinenko poisoning — Alexander Litvinenko was a former officer of Russian Federal Security Service, who escaped prosecution in Russia and received a political asylum in Great Britain. He authored two books, and Lubyanka Criminal Group, where he accused Russian secret …   Wikipedia

• radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …   Universalium

• subatomic particle — or elementary particle Any of various self contained units of matter or energy. Discovery of the electron in 1897 and of the atomic nucleus in 1911 established that the atom is actually a composite of a cloud of electrons surrounding a tiny but… …   Universalium

• Earth exploration — Introduction   the investigation of the surface of the Earth and of its interior.  By the beginning of the 20th century most of the Earth s surface had been explored, at least superficially, except for the Arctic and Antarctic regions. Today the… …   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

• Technetium — molybdenum ← technetium → ruthenium Mn ↑ Tc ↓ Re …   Wikipedia