Dendrochronology radiocarbon dating calibration
It relies upon chronometry, which is also known as timekeeping, and historiography, which examines the writing of history and the use of historical methods.
Radiocarbon dating estimates the age of formerly living things by measuring the proportion of carbon-14 isotope in their carbon content.
While of critical importance to the historian, methods of determining chronology are used in most disciplines of science, especially astronomy, geology, paleontology and archaeology.
In the absence of written history, with its chronicles and king lists, late 19th century archaeologists found that they could develop relative chronologies based on pottery techniques and styles.
The image to the right shows two pages from the second section.By comparing the parallel columns, the reader can determine which events were contemporaneous, or how many years separated two different events.To place all the events on the same time scale, Eusebius used an Anno Mundi (A.M.) era, meaning that events were dated from the supposed beginning of the world as computed from the Book of Genesis in the Hebrew Pentateuch.
According to the computation Eusebius used, this occurred in 5199 B. The Chronicon of Eusebius was widely used in the medieval world to establish the dates and times of historical events.Much of modern historical datings and chronology of the ancient world ultimately derives from these two works.