If there are quite commonly created wind waves on the crop surface in the field (wonderful; photo, video; Many thanks for explaining, Mr. Vetvicka), therefore is also possible that after the impact of the step pulse from above, that is one of possible very precise characteristics of the lightning discharge, create circular waves exactly in the same way, like on the water surface after a stone falling there. It depends only on the time interval, after that hits the subsequent stroke, "making exposition", and how the circles from previous discharges were able to develop.
Kama kuna kabisa Kawaida upepo mawimbi umba juu ya uso katika uwanja wa mazao (ajabu, picha, video, Shukrani nyingi kwa kueleza, Mr. Vetvicka), Hiyo ni pia Inawezekana Kwamba baada ya madhara ya Pulse hatua kutoka hapo juu, Hiyo ni moja ya Tabia sahihi sana Iwezekanavyo ya kutokwa umeme, kujenga mawimbi mviringo hasa Katika njia sawa, kama juu ya uso wa maji baada ya jiwe kuanguka huko.