carbon-14(redirected from 14 C)
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a beta-emitter with a half-life of about 5700 years. It occurs naturally, arising from cosmic rays, and is used as a tracer in studying various aspects of metabolism and in dating relics that contain natural carbonaceous materials. Compare carbon-11.
carbon-14A natural beta-emitting radioisotope of carbon that has a T1/2 of 5720 years, which decays to 14N. It has been used as a biotracer and in anthropology for dating carbon-rich materials, especially newer fossils, and can determine the age of carbon-based materials up to 60,000 years old.
A radioactive isotope of carbon with a half-life of 5600 years; mass number 14; atomic mass (weight) 14. It is used as a tracer in metabolic studies and in archaeology to date materials containing carbon.