![]() ![]() An optical spectrum of what appears to have been a ball-lightning event was published in January 2014 and included a video at high frame rate. Descriptions of ball lightning appear in a variety of accounts over the centuries and have received attention from scientists. ![]() Some 19th-century reports describe balls that eventually explode and leave behind an odor of sulfur. Though usually associated with thunderstorms, the observed phenomenon is reported to last considerably longer than the split-second flash of a lightning bolt, and is a distinct phenomenon from St. Ball lightning is an unexplained phenomenon described as luminescent, spherical objects that vary from pea-sized to several meters in diameter. ![]()
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