carbon-14 dating

or radiocarbon dating

Method of determining the age of once-living material, developed by U.S. physicist Willard Libby in 1947. It depends on the decay of the radioactive isotope carbon-14 (radiocarbon) to nitrogen. All living plants and animals continually take in carbon: green plants absorb it in the form of carbon dioxide from the atmosphere, and it is passed to animals through the food chain. Some of this carbon is radioactive carbon-14, which slowly decays to the stable isotope nitrogen-14. When an organism dies it stops taking in carbon, so the amount of carbon-14 in its tissues steadily decreases. Because carbon-14 decays at a constant rate, the time since an organism died can be estimated by measuring the amount of radiocarbon in its remains. The method is a useful technique for dating fossils and archaeological specimens from 500 to 50,000 years old and is widely used by geologists, anthropologists, and archaeologists.

carbon-14 dating [¦kär·bən ¦fȯr‚tēn ′dād·iŋ]

(nucleonics)

Determining the approximate age of organic material associated with archeological or fossil artifacts by measuring the rate of radiation of the carbon-14 isotope. Also known as radioactive carbon dating; radiocarbon dating.

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No references found	Goodman to date the underwater layers using two methods: carbon-14 dating and OSL (optically stimulated luminescence). Tsunami waves reasonably likely to strike Israel by Asian News International [ILLUSTRATION OMITTED] [ILLUSTRATION OMITTED] A Good Year for Dating As fortune would have it, a scientist named Willard Libby developed the carbon-14 dating method in 1949--just two years after the first scrolls were discovered. Science of the scrolls; how far-reaching technologies help ... by Kohn, Risa Levitt / ROM Magazine Carbon-14 dating placed this musical instrument and other items in the cave to between 30,000 and 37,000 years ago. Tuning into music inside our heads by Huddersfield Daily Examiner (Huddersfield, England)	carbon number carbon paper carbon pile carbon pool carbon potential carbon ratio Carbon Refractory carbon replication carbon residue carbon resistance thermometer carbon resistor carbon restoration carbon sequence carbon sequestration carbon sink carbon star Carbon Steel carbon suboxide carbon tax Carbon Tetrachloride carbon tetrafluoride carbon transducer carbon-12 carbon-13 carbon-14 carbon-14 dating carbon-arc brazing carbon-arc cutting carbon-arc lamp carbon-arc spotlight carbon-arc welding carbon-detonation supernova model Carbon-Fiber Reinforced Composite carbon-film hygrometer element carbon-film resistor carbon-hydrogen analyzer carbon-nitrogen cycle carbon-nitrogen-oxygen bicycle carbon-nitrogen-oxygen cycle carbon-nitrogen-oxygen cycles carbon-nitrogen-phosphorus ratio carbon-pile pressure transducer carbon-ratio theory carbon-residue test carbon-skeleton formula carbonaceous carbonaceous chondrite carbonaceous meteorite carbonaceous rock carbonaceous sandstone carbonaceous shale	Carbon trade Carbon Trade Watch Carbon trading Carbon Trading Scheme Carbon Trading Working Group carbon transducer Carbon transmitter Carbon trifluoride Carbon trifluoride Carbon Urea Breath Test Carbon Usage Effectiveness Carbon Usage Rate carbon value Carbon, Hydrogen, Nitrogen Carbon, Hydrogen, Nitrogen and Oxygen Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorous, Sulfur Carbon, Hydrogen, Nitrogen, Sulphur carbon, hydrogen, oxygen, nitrogen, sulfur, and phosphorus Carbon, Hydrogen, Oxygen, Phosphorus, Nitrogen, and Sulfur carbon- carbon- Carbon-11 Carbon-12 Carbon-12 Carbon-13 Carbon-13 Carbon-13 Nuclear Magnetic Resonance Carbon-14 Carbon-14 Carbon-14 carbon-14 dating Carbon-60 Carbon-60 carbon-arc brazing carbon-arc cutting carbon-arc lamp carbon-arc spotlight carbon-arc welding Carbon-Based Energy Company Carbon-Based Ion Optics Carbon-Based Material Carbon-boron bond Carbon-carbon Carbon-Carbon Composite Carbon-carbon double bond Carbon-carbon double bond Carbon-carbon double bond Carbon-Carbon Radiator Carbon-Cloth Phenolic Carbon-Constrained Unit Commitment carbon-copy carbon-copy carbon-copy carbon-date Carbon-dated Carbon-dated carbon-detonation supernova model carbon-dioxide laser carbon-dioxide laser carbon-dioxide laser Carbon-Emission Reduction

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Goodman to date the underwater layers using two methods: carbon-14 dating and OSL (optically stimulated luminescence).

Tsunami waves reasonably likely to strike Israel by Asian News International

[ILLUSTRATION OMITTED] [ILLUSTRATION OMITTED] A Good Year for Dating As fortune would have it, a scientist named Willard Libby developed the carbon-14 dating method in 1949--just two years after the first scrolls were discovered.

Science of the scrolls; how far-reaching technologies help ... by Kohn, Risa Levitt / ROM Magazine

Carbon-14 dating placed this musical instrument and other items in the cave to between 30,000 and 37,000 years ago.

Tuning into music inside our heads by Huddersfield Daily Examiner (Huddersfield, England)