Applied Physics and Mathematics Annotation << Back ELECTRODYNAMICS OF PHOTON AND ITS STRUCTURE AS A CLOT OF ONE OF MANY POSSIBLE STATE OF THE ELECTROMAGNETIC FIELD A.I. LAPTUKHOV Proceeding from the fundamental conservation laws is shown, that the electromagnetic fi eld generally even in vacuum (ρ = 0, j = 0) is described (as well as in media) four vectors D, E, B, H with the diff erent state equations (material equations): linear for electromagnetic waves and nonlinear for photons and particles. The equation is found which describes diff erent state of an electromagnetic fi eld, that is various, but not any, connection between vectors of a fi eld E, H, D and B. Is shown, that an electromagnetic wave and photon are two diff erent state of an electromagnetic fi eld having two diff erent functions of dependence of energy density from vectors of a fi eld. The partial analytical solutions for photon (which is localized in the space clot of electromagnetic energy) propagating at the speed of light only in one (in contrast to the electromagnetic wave) direction is obtained. Keywords: nonlinear electrodynamics, equations of a state of an electromagnetic fi eld, conservation laws, volumetric particles, structure of photons. Contacts: E-mail: laptukhov@izmiran.ru Pp. 03-12.