Lightning ball: experiments on creation and hypotheses (comment on “Energy density calculations for ball-lightning-like luminous silicon balls” by G S Paiva, J V Ferreira, C C Bastos, M V P dos Santos, A C Pavão)
B.P. Konstantinov St. Petersburg Institute of Nuclear Physics, Russian Academy of Sciences, Gatchina, Leningrad Region, Rusian Federation
The problems addressed in this paper include estimating: the energy density of luminous silicon balls, the density range of a natural lightning ball, and whether and how the object created and described in the commented paper (Usp. Fiz. Nauk 180 218 (2010) [Phys. Usp. 53 (2) (2010)]) corresponds to the natural phenomenon.