Abstract
Applications of radiation pressure force on macroscopic bodies typically require a nearly weightless environment owing to the relatively weak value of the force. Ideal environments include outer space and neutrally buoyant liquids. The direction and magnitude of the force is governed by light scattering processes such as reflection, refraction, and diffraction. Asymmetric scattering produces both longitudinal and transverse components of force called thrust and lift. The radiation pressure force on a diffractive film is described from analytical and experimental points of view, and potential applications are discussed for outer space and in transparent liquids.