How do you use carbon 14 dating updating to intrepid
In 1958, Hessel de Vries in the Netherlands showed there were systematic anomalies in the carbon-14 dates of tree rings.His explanation was that the concentration of carbon-14 in the atmosphere had varied over time (by up to one percent).Any contamination of a sample by outside carbon (even from the researcher's fingerprints) had to be fanatically excluded, of course, but that was only the beginning.Delicate operations were needed to extract a microscopic sample and process it.An example of the ingenious technical work and hard-fought debates underlying the main story is the use of radioactive carbon-14 to assign dates to the distant past.
Tricks also spread through visits between laboratories and at meetings, and sometimes even through publications.
After a creature's death the isotope would slowly decay away over millennia at a fixed rate.
Thus the less of it that remained in an object, in proportion to normal carbon, the older the object was.
It was an anxious time for scientists whose reputation for accurate work was on the line.
But what looks like unwelcome noise to one specialist may contain information for another.
Climate science required the invention and mastery of many difficult techniques.