carbon tracer

См. также в других словарях:

• Tracer — Tra cer, n. One who, or that which, traces. [1913 Webster] 2. A person engaged (esp. in the express or railway service) in tracing, or searching out, missing articles, as packages or freight cars. [Webster 1913 Suppl.] 3. An inquiry sent out (esp …   The Collaborative International Dictionary of English

• tracer ammunition — Tracer Tra cer, n. One who, or that which, traces. [1913 Webster] 2. A person engaged (esp. in the express or railway service) in tracing, or searching out, missing articles, as packages or freight cars. [Webster 1913 Suppl.] 3. An inquiry sent… …   The Collaborative International Dictionary of English

• carbon 14 — ( )fōr(t) tēn, ( )fȯr(t) n a heavy radioactive isotope of carbon of mass number 14 used esp. in tracer studies and in dating archaeological and geological materials * * * a radioactive isotope of carbon, atomic mass 14, having a half life of… …   Medical dictionary

• carbon — [kär′bən] n. [Fr carbone < L carbo (gen. carbonis), coal < IE base * ker , to burn > HEARTH] 1. a nonmetallic chemical element found in many inorganic compounds and all organic compounds: diamond and graphite are pure carbon; carbon is… …   English World dictionary

• Carbon-14 — Infobox isotope background = #999999 isotope name = Carbon 14 num neutrons = 8 num protons = 6 isotope filename = alternate names = radiocarbon mass number=14 abundance = 1 part per trillion symbol=C decay product = 14N halflife=5,730 error… …   Wikipedia

• carbon 13 — noun : a heavy isotope of carbon having the mass number 13, constituting about 1/70 of natural carbon, and used in tracer studies in chemistry and biology symbol C13 or 13C * * * the stable isotope of carbon having an atomic mass number 13, used… …   Useful english dictionary

• carbon — n. 1 a non metallic element occurring naturally as diamond, graphite, and charcoal, and in all organic compounds. Usage: Symb.: C. 2 a = carbon copy. b = carbon paper. 3 a rod of carbon in an arc lamp. Phrases and idioms: carbon black a fine… …   Useful english dictionary

• carbon 14 — noun a radioactive isotope of carbon • Syn: ↑radiocarbon • Hypernyms: ↑carbon, ↑C, ↑atomic number 6 * * * noun : a heavy radioactive isotope of carbon having the mass number 14 that is formed by the action of cosmic rays on nitrogen in the… …   Useful english dictionary

• carbon 13 — noun Date: 1939 an isotope of carbon of mass number 13 that constitutes about 1/70 of natural carbon and is used as a tracer especially in spectroscopy utilizing nuclear magnetic resonance …   New Collegiate Dictionary

• carbon 13 — the stable isotope of carbon having an atomic mass number 13, used as a tracer. Also, carbon 13 /kahr beuhn therr teen /. [1940 45] * * * …   Universalium

• carbon-14 — noun a long lived naturally occurring radioactive carbon isotope of mass 14, used in carbon dating and as a tracer in biochemistry …   English new terms dictionary