radiocarbon definition
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- Definition of 'radiocarbon'. radiocarbon (reɪdioʊkɑːʳbən ) also radio carbon. Radiocarbon is a type of carbon which is radioactive, and which therefore breaks up slowly at a regular rate. Its presence in an object can be measured in order to find out how old the object is.
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- Radiocarbon dating—also known as carbon-14 dating—is a technique used by archaeologists and historians to determine the age of organic material.he theory behind radiocarbon dating is as follows: 1  Terrestrial carbon contains virtually no carbon-14, since any that may have been present would have long since decayed into the stable nitrogen-14. 2  Carbon dioxide in the atmosphere, however, contains a mixture of carbon-12 and carbon-14 in known proportions.
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- hydrocarbon. an organic compound that contains carbon and hydrogen only. alicyclic hydrocarbon one that has cyclic structure and aliphatic properties. aliphatic hydrocarbon one in which no carbon atoms are joined to form a ring.
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- fossil fuel. A hydrocarbon deposit, such as petroleum, coal, or natural gas, derived from the accumulated remains of ancient plants and animals and used as fuel. Carbon dioxide and other greenhouse gases generated by burning fossil fuels are considered to be one of the principal causes of global warming. fossil fuels in Culture.
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- Radioisotope: A version of a chemical element that has an unstable nucleus and emits radiation during its decay to a stable form. Radioisotopes have important uses in medical diagnosis, treatment, and research. Last Editorial Review: 5/13/2016.
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- Full Definition of HYDROCARBON. : an organic compound (as acetylene or butane) containing only carbon and hydrogen and often occurring in petroleum, natural gas, coal, and bitumens.
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Hydrocarbons A hydrocarbon is an organic compound composed of two elements, hydrogen and carbon. A large part of the composition of petroleum is made up of hydrocarbons of varying lengths. The smallest hydrocarbon, methane, is composed of a single carbon atom and four hydrogen atoms. However, hydrocarbons can literally consist of hundreds or thousands of individual atoms that are linked together in any number of ways, including chains, circles, and other complex shapes.
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radioactivity : the property possessed by some elements (as uranium) or isotopes (as carbon 14) of spontaneously emitting energetic particles (as electrons or alpha particles) by the disintegration of their atomic nuclei; also: the rays emitted. See radioactivity defined for kids.
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- At the same historic Roosevelt Hotel, the ghost of Marilyn Monroe has supposedly been seen several times in a full-length mirror, which was originally located in her poolside Suite 1200, where Marilyn often stayed. The mirror in which her image supposedly appears is now located next to the elevator on the lower level.
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What is radiocarbon dating? Atoms of the same element that have different numbers of neutrons are called isotopes. Here’s an example using the simplest atom, hydrogen. Radiocarbon dating uses isotopes of the element carbon. Image via Mr. Gotney’s 8th grade science class.
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- Noun. 1. hydrocarbon-an organic compound containing only carbon and hydrogen. chlorobenzene-a colorless volatile flammable liquid with an almond odor that is made from chlorine and benzene; used as a solvent and in the production of phenol and DDT and other organic compounds.ny of numerous organic compounds, such as benzene and methane, that contain only carbon and hydrogen. hy′dro·car′bo·na′ceous (-bə-nā′shəs) , hy′dro·car·bon′ic (-bŏn′ĭk) , hy′dro·car′bon·ous (-bə-nəs) adj. (ˌhaɪdrəʊˈkɑːbən).
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What is radiocarbon dating? Radiocarbon dating is a technique used by scientists to learn the ages of biological specimens – for example, wooden archaeological artifacts or ancient human remains – from the distant past. It can be used on objects as old as about 62,000 years.
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radioactivity Proton radioactivity. Proton radioactivity is a mode of radioactive decay that is generally expected to arise in proton-rich nuclei far from the stable isotopes, in which the parent nucleus changes its chemical identity by emission of a proton in a single-step process.uch a series is known as a radioactive disintegration, or decay, series. The original nucleus in a decay series is called the parent nucleus, and the nuclei resulting from successive disintegrations are known as daughter nuclei.
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radio-frequency Medical Definition of RADIO FREQUENCY. : any of the electromagnetic wave frequencies that lie in a range extending from below 3 kilohertz to about 300 gigahertz and that include the frequencies used in radio and television transmission. any of the electromagnetic wave frequencies that lie in a range extending from below 3 kilohertz to about 300 gigahertz and that include the frequencies used in radio and television transmission.
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hydrocarbon Full Definition of HYDROCARBON. : an organic compound (as acetylene or butane) containing only carbon and hydrogen and often occurring in petroleum, natural gas, coal, and bitumens.See hydrocarbon defined for English-language learners.See hydrocarbon defined for kids. ADVERTISEMENT.ull Definition of HYDROCARBON. : an organic compound (as acetylene or butane) containing only carbon and hydrogen and often occurring in petroleum, natural gas, coal, and bitumens. See hydrocarbon defined for English-language learners. See hydrocarbon defined for kids.
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RADIOLOGY radiology - the branch of medical science dealing with the medical use of X-rays or other penetrating radiation. 1  radioscopy, radiology - (radiology) examination of the inner structure of opaque objects using X rays or other penetrating radiation.
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Glossary of Nuclear Science Terms Radioactive waste Materials which are radioactive and for which there is no further use. Radioactivity The spontaneous decay of disintegration of an unstable atomic nucleus accompanied by the emission of radiation. Radioisotope A radioactive isotope. A common term for a radionuclide. Radionuclide A radioactive nuclide. An unstable isotope of an element that decays or disintegrates spontaneously, emitting radiation. Rate meter
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- Full Definition of HYDROCARBON. : an organic compound (as acetylene or butane) containing only carbon and hydrogen and often occurring in petroleum, natural gas, coal, and bitumens.See hydrocarbon defined for English-language learners.See hydrocarbon defined for kids.ADVERTISEMENT.ull Definition of HYDROCARBON. : an organic compound (as acetylene or butane) containing only carbon and hydrogen and often occurring in petroleum, natural gas, coal, and bitumens. See hydrocarbon defined for English-language learners. See hydrocarbon defined for kids. ADVERTISEMENT.
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Radioactivity Radioactivity. Radioactivity is the spontaneous disintegration or decay of the nucleus of an atom by emission of particles, usually accompanied by electromagnetic radiation. Natural radioactivity is exhibited by several elements, including uranium, radium, radon gas, and radon's daughters.adioactivity. Radioactivity is the spontaneous disintegration or decay of the nucleus of an atom by emission of particles, usually accompanied by electromagnetic radiation. Natural radioactivity is exhibited by several elements, including uranium, radium, radon gas, and radon's daughters.
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Why Is Radiocarbon Dating Important To Archaeology? In 1949, American chemist Willard Libby, who worked on the development of the atomic bomb, published the first set of radiocarbon dates. His radiocarbon dating technique is the most important development in absolute dating in archaeology and remains the main tool for dating the past 50,000 years.
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fossil fuel Define fossil fuel: a fuel (such as coal, oil, or natural gas) formed in the earth from plant or animal remains — fossil fuel in a sentence a fuel (such as coal, oil, or natural gas) formed in the earth from plant or animal remains…
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Is Expired Food Safe to Eat? ‘Sell by.’ This is the date by which manufacturers suggest that retailers remove the product from shelves. The goal is to ensure quality for a period of time after you buy it. That can be several days to several weeks, depending on the item.
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Radionuclide A radionuclide (radioactive nuclide, radioisotope or radioactive isotope) is an atom that has excess nuclear energy, making it unstable.adionuclides with suitable half-lives are used in nuclear medicine for both diagnosis and treatment. An imaging tracer made with radionuclides is called a radioactive tracer. A pharmaceutical drug made with radionuclides is called a radiopharmaceutical.
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All Nobel Prizes Radiocarbon dating is a method of estimating the age of organic material. It was developed right after World War II by Willard F. Libby and coworkers, and it has provided a way to determine the ages of different materials in archeology, geology, geophysics, and other branches of science.
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- STICKING WITH TREATMENT. The treatment of high cholesterol and/or triglycerides is a lifelong process. Although medications can rapidly lower your levels, it often takes 6 to 12 months before the effects of lifestyle modifications are noticeable.TICKING WITH TREATMENT. The treatment of high cholesterol and/or triglycerides is a lifelong process. Although medications can rapidly lower your levels, it often takes 6 to 12 months before the effects of lifestyle modifications are noticeable.
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Radiometric dating See also Counterexamples to an Old Earth. Radiometric dating is a method of determining the age of an artifact by assuming that on average decay rates have been constant (see below for the flaws in that assumption) and measuring the amount of radioactive decay that has occurred.