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LoginYou probably have seen or read news stories about fascinating ancient artifacts. An archaeologist finds a child mummy high in the Andes and says the child lived more than 2, years ago. How do scientists know how old an object or human remains are? What methods do they use and how do these methods work? Radiocarbon dating, or carbon dating for short, is a way of determining the age of certain archeological artifacts of a biological origin up to about 50, years old. It is used in dating things such as bone, cloth, wood and plant fibers that human activities created in the relatively recent past.
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. It is based on the fact that radiocarbon 14 C is constantly being created in the Earth's 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.
Radiocarbon dating is an analysis method based on the measurement of the radioactive C isotope of carbon that accumulates in organisms during their life and decays after their death. Radiocarbon dating is used to estimate the age of biological samples and materials of organic origin, such as fossils and historical objects, along with some inorganic samples that contain carbon. In archaeology and fossil research, radiocarbon dating is used to study the past conditions and environments on Earth.
Radiocarbon dating , also known as the C14 dating method , is a way of telling how old an object is. It is a type of radiometric dating. The method uses the radioactive isotope carbon Most organic matter contains carbon. Carbon has different isotopes , which are usually not radioactive.
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