title: Time scales for lithium depletion and rotational braking in solar-type main-sequence stars.
abstract: The new age determination of 9 x 10(8) years for the Hyades yields an e-folding time for lithium depletion in G dwarfs of 1.1 x 10(9) years and an e-folding time for rotational braking of around 2.2 x 10(9) years. A proposal is made that the change in solar rotation over the past 250 million years be determined by analyzing petrified trees.
authors.forename: E P
authors.initials: EP
authors.lastname: van den Heuvel
authors.forename: P S
authors.initials: PS
authors.lastname: Conti