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The five charts spanned the time period 1320 through 1633 to aid investigations into whether the charts were from the specified time periods, or were created by a cottage industry known to occur many centuries later.An important aspect of the study was a series of controlled tests comparing the radiocarbon content of un-cleaned, possibly contaminated samples, with chemically cleaned equivalents.Radiocarbon dating is frequently used to date ancient human settlements or tools. It is a stable atom that will not change its atomic mass under normal circumstances. BASIS OF RADIOCARBON DATING Radiocarbon dating compares the amount of normal carbon with the amount of radioactive carbon in a sample.The calibration algorithm will calculate the same results as Cal Pal-Beyond the Ghost.Due to programming details there will be minor differences.
The nitrogen atom, which began with seven protons and seven neutrons, is left with only six protons and eight neutrons.This atom is not stable, and will break down, releasing nuclear energy in the process.Radioactive carbon (Carbon 14) is formed in the upper atmosphere as a byproduct of cosmic radiation.Only one out of every trillion carbon atoms is C14. The C14 created in the upper atmosphere reacts with oxygen to become carbon dioxide.The carbon dioxide is absorbed by plants, and the plants are eaten by animals, thus contaminating every living thing on earth with radioactive carbon. As time passes, the C14 in its tissues is converted back into nitrogen.