Applied Physics and Mathematics Annotation << Back PHYSICAL PROCESSES IN THE AIR AT STRONG ELECTRIC FIELDS OF POWERFUL STREAK LIGHTNING: THE SUBSTANTIATION OF POSITRON NATURE OF BALL LIGHTNING I.A. BORIEV Taking into account the recent fact of positron registration in the thunderstorm air at streak lightning discharge, which leads usually to the ball lightning (BL) appearance, a physical nature of BL is considered as a bunch of big amount of positrons. The known processes, which lead in strong electric fi eld of streak lightning discharge to eff ective positron generation in the air at electron-positron pair creation, are indicated. It is shown that BL positron nature let fi rst entirely explain all observed BL specifi c properties allowing for the known behavior in the air of X-radiation, which arises at positron annihilation with electrons of air molecules. On the base of recent data on existence of dark matter, which fi ll up all space, the substantiation of a possibility for many concurrently and next to created positrons to confl uence in one total bunch is given. At that are used the known conceptions on the physical essence of appearing (at electron-positron pair creation) electric charge (as revolving rotor with the spin) and on its electric fi eld (as result of around space polarization due to its rotation). Key words: power of streak lightning, creation of positrons, positron nature of ball lightning. Contacts: E-mail: boriev@binep.ac.ru Pp. 07-12.