Results of photophoresis kinetic theory development for Knudsen number whole range with regard to optical, thermophysical and accommodation properties of a particle are given. Photophoretic force affecting model macroscopic particles in the air, helium and argon within gas pressure wide range is measured. Experiments prove dependence of force on Knudsen number and thermal conductivity parameter forecasted in theory. Values of asymmetry factor and accommodation coefficients are obtained from comparison of calculated and experimental data.