It was also Mr. Discovery of Radiocarbon Dating accessed October 31, The difference between the concentration of carbon—14 in the material to be dated and the concentration in the atmosphere provides a basis for estimating the age of a specimen, given that the rate of decay of carbon—14 is well known. In we could only calibrate radiocarbon dates until 26, years. Now the curve extends tentatively to 50, years. Learn more. The principal modern standard used by radiocarbon dating labs was the Oxalic Acid I obtained from the National Institute of Standards and Technology in Maryland. Radiocarbon activity of materials in the background is also determined to remove its contribution from results obtained during a sample analysis. Seldom has a single discovery in chemistry had such an impact on the thinking in so many fields of human endeavor. This carbon—14 cycles through an organism while it is alive, but once it dies, the organism accumulates no additional carbon— Professor Willard Libby produced the first radiocarbon dates in and was later awarded the Nobel Prize for his efforts. For this discovery, Libby received the Nobel Prize in Chemistry in
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