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This data will help the scientists to relationship of Nitrogen-14 and Carbon-14 atom and can be used to predict the age of the artifact directly.
Limitations This method assumes that the ratio of C-14 to C-12 in the atmosphere and in the living organism will be a constant.
The Method of Carbon-14 Technique Archaeologists rely on the various radiometric dating techniques- based on the radioactive properties of unstable chemical atoms to determine the age of the materials. In the biosphere carbon-14 is created by the collision of a neutron, exited by the cosmic ray collides with a nitrogen atom.
Researchers from the field of Physics have discovered that radioactive molecules are unstable and they undergo decay to attain a stable structure at a specific rate which is directly determined by the atomic number and mass of the decaying atom (Polach, H. The isotope of carbon thus produced is radioactive and it will undergo decay at a constant rate (Berger and H. The carbon isotope is also absorbed during photosynthesis by plants and reaches animal body when they consume plant parts.
Developed by a team of researchers under the leadership of Dr.
Willard Libby, this technique had revolutionized the way the archaeological advancements are made in learning about the past civilization and cultures, changes occurred in the earth and in its climate.
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The theoretical limit for C-14 dating is 100,000 years using AMS, but for practical purposes it is 45,000 to 55,000 years.If dinosaur bones are 65 million years old, there should not be one atom of C-14 left in them.Dinosaurs are not dated with Carbon-14, yet some researchers have claimed that there is still Carbon-14 in the bones. Do these data indicate that a more accurate method needs to be derived?It also reaches the organisms through respiration along with normal carbon-12. “Why Is Radiocarbon Dating Important to Archaeology.” California State Parks.< It is assumed that in a living object carbon-14 which undergoes decay is replaced at a steady rate.