Simple carbon dating explanation
Carbon-14 dating is a way of determining the age of certain archeological artifacts of a biological origin up to about 50,000 years old.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.Ever wondered how scientists know the age of old bones in an ancient site or how old a scrap of linen is?The technique used is called carbon dating and in this lesson we will learn what this is and how it is used. Carbon dating, or radiocarbon dating, is a method used to date materials that once exchanged carbon dioxide with the atmosphere. In the late 1940s, an American physical chemist named Willard Libby first developed a method to measure radioactivity of carbon-14, a radioactive isotope.It is often used on valuable artwork to confirm authenticity.For example, look at this image of the opening of King Tutankhamen's tomb near Luxor, Egypt during the 1920s.Carbon-14 is a radioactive isotope and is present in all living things in a constant amount.
By measuring the amount of carbon-14 left in the organism, it's possible to work out how old it is. You probably have seen or read news stories about fascinating ancient artifacts.