Radiocarbon dating wikipedia

If you continue to browse this site, you are agreeing to our use of cookies. You can disable cookies at any time within your browser settings.­ ­You probably have seen or read news stories about fascinating ancient artifacts.Radiocarbon dating is therefore limited to objects that are younger than 50,000 to 60,000 years or so.(Since humans have only existed in the Americas for approximately 12,000 years, this is not a serious limitation to southwest archaeology.) Radiocarbon dating is also susceptible to contamination.

The theory behind radiocarbon dating is as follows: Why doesn't the carbon-14 in the air decay along with terrestrial carbon? The trick is that radioactive carbon-14 is continually replenished in a complex reaction that involves high-energy cosmic rays striking the upper atmosphere.It is used in dating things such as bone, cloth, wood and plant fibers that were created in the relatively recent past by human activities.Carbon dating measures the radioisotope concentration of Carbon 14 in an organic material.It can theoretically be used to date anything that was alive any time during the last 60,000 years or so, including charcoal from ancient fires, wood used in construction or tools, cloth, bones, seeds, and leather.It cannot be applied to inorganic material such as stone tools or ceramic pottery.

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How do scientists know how old an object or human remains are?

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