Two things in the method have to be allowed for: first, the 'date' given is never exact.
The /- figure, which should always be quoted, is a statistical one, meaning that there is a 2 to 1 chance that the correct date lies within that bracket.
The half-life is the time taken for an amount of a radioactive isotope to decay to half its original value.
By obtaining radiocarbon dates for wood of known dendrochronological date, a correction factor can be introduced to calibrate radiocarbon dates. CATEGORY: chronology DEFINITION: An abbreviation used to denote so many years Before Christ" or before the beginning of the Christian calendar.
Uncalibrated dates are raw dates in radiocarbon years. The lower case 'CATEGORY: flora DEFINITION: A small pine tree, approximately 15-40 feet (5-13 m) high, which is the oldest living tree in the world.
Because this decay is constant it can be used as a “clock” to measure elapsed time assuming the starting amount is known.
A unique characteristic of 14C is that it is constantly formed in the atmosphere.