| 释义 |
carbon 14
ra•di•o•car•bon (ˌreɪ di oʊˈkɑr bən)
n. 1. Also called carbon 14. a radioactive isotope of carbon with mass number 14 and a half-life of about 5730 years: widely used in the dating of organic materials. 2. any radioactive isotope of carbon. [1935–40] carbon 14 A naturally occurring radioactive isotope of carbon that is important in dating archaeological and biological remains by the technique known as radiocarbon dating. See more at radiocarbon dating.Thesaurus| Noun | 1. | carbon 14 - a radioactive isotope of carbonradiocarbonatomic number 6, carbon, C - an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds |
EncyclopediaSeecarboncarbon 14
carbon (C) [kahr´bon] a chemical element, atomic number 6, atomic weight 12.011. (See Appendix 6.)carbon 11 a radioactive isotope of carbon, atomic mass 11, having a half-life of 20.39 minutes; used as a tracer in tomography" >positron emission tomography.carbon 14 a radioactive isotope of carbon, atomic mass 14, having a half-life of 5730 years; used as a tracer in cancer and metabolic research.car·bon 14 (14C), (kar'bŏn), A β-emitter with a half-life of 5715 years, widely used as a tracer in studying various aspects of metabolism; naturally occurring 14C, arising from cosmic ray bombardment, is used to date relics containing natural carbonaceous materials.carbon 14
Related to carbon 14: Carbon 14 datingSynonyms for carbon 14noun a radioactive isotope of carbonSynonymsRelated Words |