Comprehensive single source for the theory on and status of current research into laser light pressure on atoms and atomic particles. Part I presents the fundamentals of the theory of resonance light pressure, analyzes the basic relations of the radiatio9n force acting on atomic particles, discusses the properties of light pressure for fields of spatial and time structure. Part II describes investigations into the control of atoms and atomic ions by laser pressure, the cooling of atomic beams, and localized atomic ions. It also describes applications of cooled atoms and ions in atomic physics and spectroscopy.