Scientific dating methods wiki
Pope Boniface IV, in about the year 600, seems to have been the first who made a connection between these this era and Anno Domini.
(AD 1 = AUC 754.) Dionysius Exiguus’ Anno Domini era (which contains only calendar years AD) was extended by Bede to the complete Christian era (which contains, in addition all calendar years BC, but no year zero).
It is also "the determination of the actual temporal sequence of past events".Many scholarly/scientific journals require that published calibrated results be accompanied by the name (standard codes are used) of the laboratory concerned, and other information such as confidence levels, because of differences between the methods used by different laboratories and changes in calibrating methods.is the science of arranging events in their order of occurrence in time.Uncalibrated radiocarbon ages can be converted to calendar dates by means of calibration curves based on comparison of raw radiocarbon dates of samples independently dated by other methods, such as dendrochronology (dating on the basis of tree growth-rings) and stratigraphy (dating on the basis of sediment layers in mud or sedimentary rock).Such calibrated dates are expressed as cal BP, where "cal" indicates "calibrated years", or "calendar years", before 1950.
Dendrochronology is used in turn as a calibration reference for radiocarbon dating curves.