Burning molten metallic spheres: One class of ball lightning?

Details Burning molten metallic spheres: One class of ball lightning? Burning molten metallic spheres: One class of ball lightning?

Aug 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008jastp..70.1589s&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 70, Issue 11-12, p. 1589-1596.

Physics

4

Ball Lightning, Nanoparticle, Burning Silicon

Scientific paper

Abrahamson and Dinniss [2000. Ball lightning caused by oxidation of nanoparticle networks from normal lightning strikes on soil. Nature 403, 519-521] proposed a theory of ball lighting in which silicon nanoparticles undergo slow oxidation and emit light. Paiva et al. [2007. Production of ball-lightning-like luminous balls by electrical discharges in silicon. Physical Review Letters 98, 048501] reported that an electric arc to silicon produced long-lasting luminous white spheres showing many characteristics of ball lightning. We show experimentally that these consist of burning molten silicon spheres with diameters in the 0.1-1 mm range. The evidence of our experiments leads us to propose that a subset of ball lightning events may consist of macro-scale molten spheres of burning metallic materials likely to be ejected from a conventional lightning strike to earth.

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