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
Kelsey (given name) in 1996. It was the 528th most common name for women in the United States in the 1990 census. Kelsey was ranked among the top 100 names for girls born in Scotland in 2007. It was also among the top 100 names for girls born in England and Wales in the late 1990s. People with the given name Kelsey: Kelsey (given name) Kelsey Is a unisex given name of English origin. The name most probably derives from an Old English given name "Ceolsige", which meant "ship's victory", or it could be a place name meaning "Cenel's island". "Cenel's Island" is