Atomic recoil Atomic recoil Atomic recoil is the result of the interaction of an atom with an energetic elementary particle, when the momentum of the interacting particle is transferred to the atom as whole without altering non-translational degrees of freedom of the atom. It is a purely quantum phenomenon. Atomic recoil was discovered by Harriet Brooks, Canada's first female nuclear physicist. If the transferred momentum of atomic recoil is enough to disrupt the crystal lattice of the material, a vacancy defect is formed; otherwise a phonon is generated. Closely related to atomic recoil is electron recoil (see photoexcitation and photoionization), and nuclear
Kennedy (given name) Kennedy (given name) Kennedy is a unisex given name in the English language. The name is an Anglicised form of a masculine given name in the Irish language. According to Patrick Hanks and Flavia Hodges, the given name "Kennedy" is an Anglicised form of "Cinnéidigh", a masculine given name in the Irish language. This Irish name is composed of two elements: the first, "ceann", means "head"; the second, "éidigh", means "ugly". According to Patrick Woulfe, who wrote in the early 19th century, "Kennedy or Kynidi" is an Anglicised form the Irish "Cinnéididh" and "Cinnéidigh". Woulfe derived these Irish names from