The aerosol particle photophoresis phenomenon consists in occurrence of force acting on a particle in an optical radiation field and which is growing out of gas interaction with non-uniform heated particle surface. The theoretical difficulty in this phenomenon is resolved by replacing the particle of real size by macroscopic. Macroscopic sizes of a model particle allow using non-monochromatic radiation source. In this case a geometrical optics limit is realized, where the factors of absorption and asymmetry of temperature are not sensitive to change of diffraction parameter, making it possible for experimental check of existing theories.