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How does radioactive decay dating work

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Radiocarbon dating also referred to as carbon dating or carbon dating is a method for determining the age of an object containing organic material by using the properties of radiocarbon , a radioactive isotope of carbon. The method was developed in the late s at the University of Chicago by Willard Libby , who received the Nobel Prize in Chemistry for his work in It is based on the fact that radiocarbon 14 C is constantly being created in the atmosphere by the interaction of cosmic rays with atmospheric nitrogen. The resulting 14 C combines with atmospheric oxygen to form radioactive carbon dioxide , which is incorporated into plants by photosynthesis ; animals then acquire 14 C by eating the plants. When the animal or plant dies, it stops exchanging carbon with its environment, and thereafter the amount of 14 C it contains begins to decrease as the 14 C undergoes radioactive decay.
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Carbon Dating

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About Uranium-Lead Dating

Radiometric Dating Does Work! Just as the magnetic methods in a work will point toward magnetic north, small magnetic minerals that occur naturally in rocks point toward magnetic north, approximately parallel to the Earth's samples field. Because of this, magnetic minerals in rocks are excellent recorders of the orientation, or polarity , of the Earth's samples field. Figure
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Radiocarbon dating

Radioactive decay , also known as nuclear decay or radioactivity is a random process by which an unstable atomic nucleus loses its energy by emission of radiation or particle. A material containing unstable nuclei is considered radioactive. These two forces compete, leading to various stability of nuclei.
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Ionizing radiation can affect the atoms in living things, so it poses a health risk by damaging tissue and DNA in genes. The ionizing radiation that is emitted can include alpha particles alpha particle A form of particulate ionizing radiation made up of two neutrons and two protons. Alpha particles pose no direct or external radiation threat; however, they can pose a serious health threat if ingested or inhaled. Some beta particles are capable of penetrating the skin and causing damage such as skin burns.
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