Dendrochronology (from the Greek δένδρον = tree, χρόνος = time, and λογία = study) or tree-ring dating is the method of scientific dating based on the analysis of tree-ring growth patterns. This technique was developed during the first half of the 20th century originally by the astronomer A. E. Douglass, the founder of the Laboratory of Tree-Ring Research at the Universit… (More on Dendrochronology)