The first ink dating method is the static approach, which determines when the ink being examined was manufactured.The second ink dating method is the dynamic approach, this method is to determine when the writing occurred, or in simple terms, how long the ink has been on the paper.However, since this is a very small portion of the actual type of cases seen, we will concentrate primarily on more recent developments.Other pages discuss the use of infrared to discriminate the differences between inks that visually and microscopically look identical.
AMS dating is an advanced method compared to radiometric analysis using liquid scintillation counters (LSC). Samples submitted for radiometric dating will be reported as Radiometric PLUS, which combines large sample handling techniques with particle detection.
Plants and animals assimilate carbon 14 from carbon dioxide throughout their lifetimes.
When they die, they stop exchanging carbon with the biosphere and their carbon 14 content then starts to decrease at a rate determined by the law of radioactive decay.
Radiocarbon, or carbon 14, is an isotope of the element carbon that is unstable and weakly radioactive. Carbon 14 is continually being formed in the upper atmosphere by the effect of cosmic ray neutrons on nitrogen 14 atoms.
It is rapidly oxidized in air to form carbon dioxide and enters the global carbon cycle.