Variations in annual ring widths reflect the conditions that influence tree growth.
One annual ring consists of the light, spring wood band and the darker, summer wood band.
annual ring widths were determined from the known pitch of the screw that translates the sample.
British Dictionary definitions for annual ring
annual ring
noun
1.
a ring of wood indicating one year's growth, seen in the transverse section of stems and roots of woody plants growing in temperate climates Also called tree ring