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Simple radiocarbon dating method

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This figure is directly based on the proportion of radiocarbon found in the sample. It is calculated on the assumption that the atmospheric radiocarbon concentration has always been the same as it was in and that the half-life of radiocarbon is years. To give an example if a sample is found to have a radiocarbon concentration exactly half of that for material which was modern in the radiocarbon measurement would be reported as BP. In order to see what a radiocarbon determination means in terms of a true age we need to know how the atmospheric concentration has changed with time.
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12.4: Radiocarbon Dating- Using Radioactivity to Measure the Age of Fossils and Other Artifacts

Simple radiocarbon dating method
Simple radiocarbon dating method
Simple radiocarbon dating method
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Radiocarbon Dating

Radiocarbon Dating is a method of determining how old an object is by the amount of carbon in it. The majority of organic matter contains carbon, and while carbon is not usually radioactive one of its isotopes, 14C is radioactive. This means that 14C will have a defined half-life, the amount of time is takes to radioactively decay to half of its original amount. The half-life of 14C is 5, years, and knowing this half-life allows scientists to determine the age of substances that contain carbon. The radiocarbon dating method will work on objects up to 60, years old. The method of Radiocarbon dating was created by Willard Libby in Libby introduced radiocarbon dating to the world by accurately calculating the age of pieces wood from an ancient Egyptian royal barge.
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The Reliability of Radiocarbon Dating

When we speak of the element Carbon, we most often refer to the most naturally abundant stable isotope 12 C. Although 12 C is definitely essential to life, its unstable sister isotope 14 C has become of extreme importance to the science world. Radiocarbon dating is the process of determining the age of a sample by examining the amount of 14 C remaining against its known half-life, 5, years. The reason this process works is because when organisms are alive, they are constantly replenishing their 14 C supply through respiration, providing them with a constant amount of the isotope.
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Be prepared to show that you understand what event a particular dating method "dates" and how that differs, in many cases, from the event in which archaeologists are interested. Pay close attention to the dating models in figure Try to think of these things in terms of real-world, simple examples e.
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