Start Wiki carbon dating

Wiki carbon dating

Beyond that timespan, the amount of the original C formed by irradiation of nitrogen by neutrons from the spontaneous fission of uranium, present in trace quantities almost everywhere.

These factors affect all trees in an area, so examining tree-ring sequences from old wood allows the identification of overlapping sequences.

In this way, an uninterrupted sequence of tree rings can be extended far into the past.

Samples used for radiocarbon dating must be handled carefully to avoid contamination.

Not all material can be dated by this method; only samples containing organic matter can be tested: the date found will be the date of death of the plants or animals from which the sample originally came.

Carbon dating has a certain margin of error, usually depending on the age and material of the sample used.

Carbon-14 has a half-life of about 5730 years, and therefore it is used to date biological samples up to about 60,000 years in the past.

is a technique used by scientists to learn the ages of biological specimens – for example, wooden archaeological artifacts or ancient human remains – from the distant past.