The decay of the neutron is associated with a quark transformation in which a down quark is converted to an up by the weak interaction . The average lifetime of 10.3 min/0.693 = 14.9 minutes is surprisingly long for a particle decay that yields 1.29 MeV of energy.
The Stella Cherry Tree is a small self pollinating tree which produces an abundance of heart shaped, shiny, black red fruit with red flesh. It can live up to 35 years on a compact 15 foot tree.
Any given tree may only be in full bloom for about a week. Cherry blossom season usually lasts about a month from the earliest bloomersâthis year the ever-blooming cherry (Prunus sargentii 'Fudan-zakura')âto the latest, usually the 'Kanzan' (P. âKanzanâ) and the 'Ukon' (P. serrulata âUkonâ).