Chronological methods 8 radiocarbon dating specialized online dating
is the science of arranging events in their order of occurrence in time.
Consider, for example, the use of a timeline or sequence of events.
Dionysius Exiguus (about the year 500) was the founder of that era, which is nowadays the most widespread dating system on earth.
Some cultures have retained the name applied to them in reference to characteristic forms, for lack of an idea of what they called themselves: "The Beaker People" in northern Europe during the 3rd millennium BCE, for example.
Dendrochronology estimates the age of trees by correlation of the various growth rings in their wood to known year-by-year reference sequences in the region to reflect year-to-year climatic variation.
Dendrochronology is used in turn as a calibration reference for radiocarbon dating curves.
The familiar terms calendar and era (within the meaning of a coherent system of numbered calendar years) concern two complementary fundamental concepts of chronology.
For example, during eight centuries the calendar belonging to the Christian era, which era was taken in use in the 8th century by Bede, was the Julian calendar, but after the year 1582 it was the Gregorian calendar.